Leonard Stuart Lilly, MD

Leonard Stuart Lilly, MD

Not currently accepting new patients

4.94087 average rating from 345 patient reviews

Specialties

Affiliation

Mass General Brigham

Provider Locations

  • Boston, MA

Dr. Leonard Stuart Lilly is chief of the Cardiology Division at Brigham and Women's Faulkner Hospital and a cardiovascular medicine specialist at Brigham and Women’s Hospital (BWH). In addition, he is a professor of medicine at Harvard Medical School (HMS).

He received his medical degree from Albany Medical College. He then completed an internal medicine residency at Peter Bent Brigham Hospital (now BWH) and a cardiovascular disease fellowship at BWH. He is board certified in both internal medicine and cardiovascular disease.

Dr. Lilly’s clinical interests include general and preventive cardiology, hypertension, lipid disorders, noninvasive imaging and diagnostic challenges. For the past 30 years, he has been very involved in teaching cardiovascular medicine at HMS and BWH. In addition, he is the senior editor of Pathophysiology of Heart Disease, a widely read textbook. He was listed as one of America’s Top Doctors by Castle Connolly.

Education & Training

  • Fellowship: Brigham and Women's Hospital, Cardiology, 1983
  • Residency: Brigham and Women's Hospital, Internal Medicine, 1980
  • Medical Education: Albany Medical College, 1977

Board Certifications

  • Cardiovascular Disease, American Board of Internal Medicine
  • Internal Medicine, American Board of Internal Medicine

Languages Spoken

  • English

Age Group Treated

  • Adults

Patient Feedback

4.94087 average rating from 345 reviews

  • Very interested and concerned about my medical status

    2026-07-30

  • Dr Lilly is the best !

    2026-07-30

  • Dr Lilly is a great physician

    2026-07-29

  • He was the best Warm, welcoming, sensitive and caring

    2026-07-28

  • Dr Lilly is the best doctor I have. He always listens and makes recommendations. He tries to coordinate with my other providers and I always feel comfortable talking with him about any concerns. I wish all providers were like him! His staff is really good as well. I drive an hour to get to him rather than many docs closer.

    2026-07-27

  • Thank you.

    2026-07-29

  • Dr.Lilly is kind, supportive, comforting and great to have on your medical team.

    2026-07-26

  • I saw Dr. Lilly on a recommendation from another doctor. I was extremely happy with the result. He is not only caring and understanding of your situation, he tries to fit his diagnosises and the things you do into your lifestyle while keeping your health in his best interest and your best interest. He wants to help you live longer. The man is amazing. I completely would recommend him to anyone with confidence.

    2026-07-27

  • Dr. Lilly is excellent. Very knowledgeable and intelligent, and I feel he really cares about my welfare.

    2026-07-26

  • It was perfect

    2026-07-15

  • As always, everyone there was very helpful and caring

    2026-07-15

  • The most thorough, sensitive and caring MD one could ask for!

    2026-07-15

  • Dr Lilly is a doctor who cares, he's always interested in my thoughts and explaining about my heart health.

    2026-07-15

  • Dr. Lilly is an excellent cardiologist who listens to your concerns and responds in a way that's easy to understand. Dr. Lilly came into the examination room prepared as he had previously reviewed the test results that I had taken and explained the results to me and recommended follow up procedures. I would definitely recommend Dr.Lilly.

    2026-07-15

  • Always a pleasure to see Dr Lilly. I really feel he listens and cares about me.

    2026-07-14

  • Excellent.

    2026-07-12

  • Everything was excellent. I wish all the Brigham offices will be like this one.

    2026-07-10

  • Dr. Lilly is a wonderful physician. He is thorough, listens, makes me feel very comfortable, provides excellent advice and overall is the best doctor I have ever had manage my care. He reviews all aspects of my health situation and ties it all together in a way I can easily understand. He is the best !

    2026-07-14

  • All went well , no problems

    2026-07-10

  • I'm absolutely confident with the excellent care by Dr. Lilly as my Cardiologist .

    2026-07-05

  • Dr,Lilly is just the best! He is totally engaged during your visit and discussions therein. He's been my Cardiologist since 2003, and I could not be happier.

    2026-06-24

  • Excellent!!

    2026-06-22

  • [redacted] Dr. Lilly and his team are A-One

    2026-06-22

  • The best Dr. I have. Many years back he saved me from an unnecessary procedure that was ordered by a Cardiologist at Emerson Hospital.

    2026-06-22

  • Very positive experience.

    2026-06-22

  • I had an excellent visit. My doctor was very patient careful and detail by reviewing my blood result from other doctors and order a new test which was very useful.

    2026-06-21

  • The nurse was efficient and professional. Doctor was absolute best.

    2026-06-18

  • Dr Lilly is amazing & I feel like I am in good hands.

    2026-06-17

  • Dr Lilly is a wonderful physician. He listens and provides great care

    2026-06-15

  • The best cardiologist I could ever ask for. Dr Lilly is #1- tops

    2026-06-15

  • Have been seeing him for years

    2026-06-16

  • Dr Lilly is the best the nurse for EKG was just ok didnt really talk just did her thing

    2026-06-13

  • Dr. Lilly is one of the very best doctors I've ever experienced and he is extremely knowledgeable, attentive and human. Excellent, excellent, excellent doctor.

    2026-06-11

  • I'm almost [redacted] y/o [redacted]. Without a doubt, Dr. Leonard Lilly took more time and had more interest in my case than I could expect. Additionally, I noted how careful and thorough his physical exam was; many physicals have been performed too quickly and he took time to learn and confirm things with me. I'm lucky to be a patient of his; the B&W Hospital served me very well and I appreciate it.

    2026-06-10

  • Professional Paying attention Studied my record Treated me and my condition as important

    2026-06-06

  • Except the long wait for the mos surgery everything went just great

    2026-06-03

  • Dr. Lilly is one of the best.

    2026-05-28

  • Great doctor, even a better person

    2026-05-26

  • A very caring and knowledgeable provided. Dr Lilly is one of the best! He stays abreast of the latest in medicine and creates an excellent treatment plan.

    2026-05-20

  • Dr Lilly is the BEST

    2026-05-18

  • Dr LL is the best - he is caring and articulate - just a kind man - i've been his patient for 28 years and recommended him to a great many people - all of whom have thanked me.

    2026-05-17

  • He is an excellent doctor.

    2026-05-17

  • Dr Lilly has been great

    2026-05-17

  • Dr Lilly very caring had blood work he called after explaining ok

    2026-05-11

  • Doctor Lilly is A knowledgeable, competent, and compassionate doctor.

    2026-05-08

  • Dr. Lilly is a very caring and compassionate Dr. as well as a GOOD listener. We, my Family & I are are very happy to have met him & are Happy that he is My Cardiologist.

    2026-05-08

  • Took a careful history and performed a thorough examination. Friendly and courteous.

    2026-05-03

  • Dr. Lilly is the most pleasant person as well as being a doctor. Always responds to messages if needed.

    2026-05-01

  • Great place for care!

    2026-04-26

  • If I could give Dr Lilly and his medical team higher than 10 I would! All are top notch - the best

    2026-04-26

  • Outstanding, caring, knowledgeable provider

    2026-04-26

  • Dr.Lilly is kind, thoughtful, caring. He listens and responds in a respectful way. He answers all questions and concerns. I have recommended him to friends and they have been very happy with his care.

    2026-04-26

  • D.Lilly is thoughtful, respectful, asks good questions. I feel A lot of confidence in him.

    2026-04-25

  • Dr. Lilly is a doctor who listens carefully and takes your concerns seriously can make a big difference-not just in treatment, but in how comfortable you feel sharing what's going on. He handled a diagnosis, explained options clearly, and followed up on your care.

    2026-04-22

  • Dr. Lilly is the most caring provider I have; in addition to his expertise he exudes with warmth. It is a privilege to have him as my cardiologist for so many years!

    2026-04-19

  • Dr. Lilly is friendly and professional and so very down to earth. He is a very kind and caring doctor. I never feel rushed, he explains things thoroughly, and answers all my questions. I feel so lucky to have him as my Cardiologist.

    2026-04-20

  • A total rewarding Experience

    2026-04-19

  • Thorough

    2026-04-18

  • Dr. Lilly is an excellent cardiologist. He spends a lot of time with you. He explains things well. He is relaxed and caring and I would highly recommend him to anybody. Thank you.

    2026-04-10

  • Dr. Lilly is knowledgeable, kind and attentive. I have been very impressed and satisfied with his level of care.

    2026-04-09

  • Dr. Lilly is wonderful and I have always been extremely happy when working with him. [redacted]

    2026-04-08

  • Dr Lilly is the best- knowledgeable, caring, and very respectful of my feedback and health concerns. I am grateful for him and how much time and care he's gone out of his way to provide to make sure I'm ok. He's taken initiative to see me in a timely fashion when I had a related health issue and to get me my prescriptions and testing when needed. And his staff members also go above and beyond in service, courtesy and kindness.

    2026-04-06

  • I am always more than pleased when I see Dr. Lilly. He is a very kind gentleman who really cares about his patients.

    2026-04-05

  • Great provider and care!

    2026-04-02

  • I had a very well visit with Dr. Lilly and his staff including nurse and receptionist. I recommend him seriously. I love him.

    2026-04-01

  • Gives the very best care to patient EXCELLENT 11

    2026-04-01

  • Excellent visit

    2026-03-31

  • Dr. Lilly is caring and on top of things

    2026-03-29

  • All doctors should strive to provide the level of care Dr Lilly provides.

    2026-03-28

  • Dr. Lilly is more than my cardiologist, he has become a very good friend. I can count on him always to see me or to give me advice when I ask. He is a wonderful person, very kind and always interested in me and what I have to say. I hope he neve leaves. I would miss him do much.

    2026-03-28

  • Yeah, Dr. LILLY 's office is always very good. Excellent doctor, excellent staff, excellent nurses. It was a nice experience. Thank you.

    2026-03-26

  • Excellent Doctor!

    2026-03-25

  • Dr. Lilly was kind, knowledgeable, and took the time to listen carefully to my concerns.

    2026-03-24

  • Dr. Lilly is a kind and caring physician.

    2026-03-19

  • Dr Lilly is the best. He is concerned and caring and always takes time to listen. He is knowledgeable about new developments in the area of cardiac care. I have recommended him to all of my friends, but unfortunately, he has no more room for new patients.

    2026-03-16

  • The best!

    2026-03-16

  • I have known Dr Leonard Lilly for over 25 years. He has always been kind and personable. He was very informative and explained the new prescription and why I would be taking it.

    2026-03-16

  • The Provider is thorough and has knowledge of my medical background. He is a very caring and thoughtful doctor... He is soft-spoken, which is important to me.

    2026-03-16

  • Dr Lilly is extremely professional. He makes it clear that he cares about me and my health. I feel lucky to be his patient.

    2026-03-14

  • Dr Lilly is everything you want in a great doctor

    2026-03-08

  • The best!

    2026-03-08

  • As always friendly, knowledgeable and caring.

    2026-03-07

  • I can not say enough great things about my provider he is great and very caring

    2026-03-07

  • Dr. Lilly is the BEST. He is an asset to Brigham and Women's Hospital.

    2026-03-06

  • Dr Lilly is a doctor who remembers my situation and is diligent in explaining his care. I have the utmost confidence in Dr Lilly. He is kind and reassuring.

    2026-03-05

  • I was very glad that I had a chance to meet Dr. Lilly. He is obviously extremely knowledgeable and I truly trust him to take care of me. Thank you.

    2026-03-05

  • I have been very fortunate to have Dr Lilly as my husband's and my cardiologist for 40 years. He is an extremely intelligent gentleman of the highest order. He is kind, empathetic, easy to understand, and very likable.

    2026-03-02

  • This doctor is very, very good. I'm very satisfied. I appreciate the doctor. I recommend them for my friends, family. This is the best doctor, cardiologist, and people who work with him are very, very good.

    2026-03-04

  • I have the utmost confidence in Dr Lilly and always feel better after seeing him.

    2026-03-02

  • Good

    2026-02-25

  • Dr. Lilly is a great doctor. I totally trust him in all aspects of my coronary care.

    2026-02-22

  • Dr Lilly is terrific and wonderful.

    2026-02-15

  • Dr. Lilly is a truly outstanding cardiologist and a wonderful human being that listened carefully to my history and provided a detail analysis of my findings and risk factors as well as recommendation for future care.

    2026-02-14

  • Dr. Lilly is the ultimate professional and has been for many years.

    2026-02-14

  • I have been a patient of Dr. Lilly for quite a few years and I have always been treated respectfully and I think the care and attention has been excellent.

    2026-02-27

  • [redacted] Dr. Lilly provides the best, unsurpassed, excellent medical care that anyone could ever receive. He's personable. He's so humble, so humble and is so knowledgeable and courteous and respectful and empathetic and compassionate. He wants the very best for his patients [redacted] He's always 120% for his patients. He works 120% longer, stronger, better than anyone else. And anyone that's his patient should be grateful, grateful and thankful that he has been a great job.

    2026-02-25

  • [redacted] I have been seeing the doctor for 20 years and have the utmost respect for him and his staff. I consider myself extremely fortunate to have him as my cardiologist.

    2026-02-08

  • Warm and sensitive but always professional

    2026-02-07

  • Dr Lilly is compassionate and caring physician

    2026-02-07

  • I was told that Dr. Lilly was a great doctor and a mensch. He lived up to the billing 100%. The best doctor experience I have ever had.

    2026-02-04

  • Great doctor-attentive, patient and fun.

    2026-02-02

  • Dr. Lilly is one of the finest physicians I have ever had in my long life. Not only is he incredibly thorough and thoughtful, but he listens extremely well. Beyond that, he calls me in person as he actually did this morning, with test results, his responsiveness is extraordinary. A+ all around

    2026-01-29

  • Dr. Lilly is exceptional. He's probably the best provider that I see and I've seen him regularly over at least the last 10 years. So I would rate him a 10 and exceptional. Thank you.

    2026-01-29

  • Dr. Lilly is completely outstanding. He's a fantastic doctor and I'd recommend him to anybody.

    2026-01-26

  • The care provider is an outstanding physician. I highly recommend him to anybody that I care about. Thank you very much. Please pay him well. Keep him on your staff. He is fabulous. Thank you.

    2026-01-26

  • He's very friendly, follows up with either tests or information, answers emails, spends time, and I highly recommend him.

    2026-01-28

  • I receive excellent care from Dr Lilly and his staff

    2026-01-21

  • kept me feeling comfortable and relaxed listened to me and was extremely helpful

    2026-01-19

  • Dr Lilly addressed my concerns with clear understanding and comprehensive explanations. I came away with the satisfaction of knowing the particulars of my current condition.

    2026-01-18

  • always excellent.

    2026-01-21

  • Nurses not friendly

    2026-01-21

  • One of the kindest, thorough physicians I have ever had met. Actually, the most incredible bedside manner. A problem solver, a listener, and a kind human being. Thank you Dr. Lilly!

    2026-01-20

  • Dr. Lilly is a caring, experienced, knowledgable doctor. I couldn't ask for a better physician.

    2026-01-19

  • She was very helpful listened to my concerns was kind and caring

    2026-01-17

  • Seen him for at least 15 years, it's been great.

    2026-01-17

  • Dr Lilly is an excellent physician. He is knowledgeable and his interactions with patients are of the highest quality. He listens attentively. He empathizes. He is humble and kind. He puts the patient at ease and imparts great confidence in his ability. I have the highest respect and regard for him.

    2026-01-15

  • Good.

    2026-01-18

  • dr lilly is the best

    2026-01-13

  • Dr Lilly is the most caring and compassionate doctor I've ever been a patient with.

    2026-01-10

  • Dr Lilly is the best, very thorough, knowledgeable and personable

    2025-12-29

  • Thorough , kind manner. Positive

    2025-12-31

  • Excellent

    2025-12-29

  • Hes the best

    2025-12-29

  • He's the best.

    2025-12-28

  • I appreciate Dr. Lilly. He was ver busy the day he saw me yet he spent appropriate time with me.

    2025-12-29

  • A very calming manner and a very through examination.

    2025-12-29

  • Everyone at BGW is amazing Doctor Lilly met with my wife and me on [redacted], he is thoughtful, caring and very good at what he does

    2026-01-07

  • Dr Lilly has always gone well beyond what I would expect whenever there was an unusual situation. He was there for some of my most difficult medical issues. He treats me and my wife as if we were his family (we aren't).

    2025-12-22

  • Dr Lilly is an exceptional and outstanding doctor. And I am fortunate to be his patient.

    2025-12-22

  • Dr. Lilly is excellent. He explains everything very well and shows care and interest in me as a patient and as person

    2025-12-21

  • Since 2016 my experience with Dr. Lilly and his medical team has been wonderful. Medically and emotionally I have been completely satisfied with their performance and their ability to put me and my family at ease. He saved my life. Who could ask for more.

    2025-11-26

  • Dr. Lilly was very thorough and is staying on top of my heart valve issue. I am very concerned about it but I trust Dr. Lilly [redacted] Thank you overall Dr. Lilly and his staff is fantastic and very professional. I'm glad I am seeing him for my vision valve issue.

    2025-11-26

  • Dr. Lilly is simply the best doctor I think I have ever ever ever Had

    2025-11-27

  • Dr Lilly is an extra ordinary person . I feel so lucky that he is my cardiologist- he is a brilliant physician, a thoughtful listener and extremely empathetic.

    2025-11-26

  • I'm very happy with Dr. Lilly as my cardiologist.

    2025-12-01

  • Dr Lilly is always thorough and knowledgeable. Excellent Doctor.

    2025-11-27

  • Dr. Lilly is a fantastic provider. He always is very considerate and carefully evaluates my symptoms to come up with a recommended course of treatment.

    2025-11-24

  • A #1

    2025-11-26

  • Everyone was very professional and friendly

    2025-11-23

  • Dr. Lilly is wonderful. He began the appointment asking about a medical condition that I had recently. This told me that he had prepared for my appointment by reviewing my medical records. I have tremendous confidence in Dr. Lilly. He listens carefully, gives excellent advice and is easy to talk to. I look forward to my appointments with him as I always leave feeling that I have had a very positive experience. A great doctor.

    2025-11-22

  • Terrific

    2025-11-22

  • I feel very fortunate that Dr. Lilly is my cardiologist. I have good trusting relationship with him and working with him is always reassuring and helpful.

    2025-11-19

  • A pleasure coming for my annual Cardiologist appointment with Dr. Lilly. Dr. Lilly always makes me feel comfortable, shakes my hand hello, detailed in asking about my health, medication, daily routine, he addresses everything question and concern, he is the ultimate professional. I feel seen and respected after my visit. [redacted]

    2025-11-19

  • The provider is always respectful and knows about my condition when I arrive, he listens to me and spends enough time with me. He is very knowledgeable, kind and professional. I know that I will get the best care!

    2025-11-20

  • Dr Lilly is outstanding in every possible way. He is very knowledgeable and gives very good advice and recommendations. He has a great personality and I enjoy spending time with him.

    2025-11-19

  • He listens to what you have to say.

    2025-11-17

  • I was very impressed with the level of care that I received from Dr. Lilly. He was very caring and very interested in everything I had to say. I felt very comfortable and confident with my treatment. He altered my medication to better suit my needs. Extremely happy.

    2025-11-19

  • Hi, I would just like to say that Dr. Lilly is just the best cardiologist one could ever hope to have. He's kind, he's funny, he's extremely knowledgeable and very easy to be with. [redacted]

    2025-11-17

  • Wonderful doctor - always listens to my concerns and questions explains all possible medications or treatments.

    2025-11-05

  • The BEST...

    2025-11-04

  • Dr Lilly is probably the best doctor that I have been treated by. Caring, thoughtful, and extremely knowledgeable. I have recommended him to all my friends and colleagues who need to be seen by a cardiologist.

    2025-11-03

  • Excellent

    2025-11-02

  • I have a multi year experience and I am looking forward to continuing it.

    2025-11-01

  • Compassionate and professional

    2025-11-01

  • Dr Lilly is ABSOLUTELY a Wonderful Doctor and Human Being! I feel so Very Safe and Protected in his Care.

    2025-11-01

  • Dr Lilly is extraordinary. He deeply cares about my health now and into the future. He is detail conscious and thorough. His emotional intelligence is stellar. I have great gratitude and love for him year round.

    2025-10-30

  • All providers should learn from Dr. LILLY. He is outstanding !

    2025-10-30

  • Mass General Brigham and Women's is very luck to have Dr. Lilly as a provider. I can't imagine a better cardiologist or provider. He embodies the Hippocratic Oath and extends it meaning through all his actions.

    2025-10-29

  • Dr Lilly is a caring and wonderful physician who keeps the needs of his patients a priority. I trust his expertise. Thank you

    2025-10-29

  • Dr. Lilly and his staff are exceptional in the way they treat(ed) me.

    2025-10-26

  • I have prior experience with Dr Lilly. He is wonderful!

    2025-10-26

  • Extremely knowledgeable

    2025-10-26

  • Despite being short staffed, all staff members are very pleasant and show care and concern for their patients.

    2025-10-26

  • The best experience I've had!

    2025-10-25

  • The staff in Dr. Lilly's office is awesome. And Dr. Lilly has literally kept me alive for the past 25 years. I have never been more impressed with a doctor.

    2025-10-24

  • My provider is excellent

    2025-10-12

  • I am 100 percent satisfied with his care and his communications. He listens well and responds to my concerns and questions with clarity and empathy.

    2025-10-11

  • Dr Lilly has been a hugely positive impact in my health, and has been a wonderful advisor/help assisting on a health issue with my youngest daughter. I think the world of him.

    2025-10-06

  • Excellent doctor

    2025-10-06

  • Dr. Lilly has provided excellent care for over 20 years.

    2025-10-08

  • Dr. Leonard Lilly is the best, I am grateful that he is my Cardiologist. He is professional, friendly and caring. He is thorough and never rushes me!

    2025-10-07

  • Great knowledge and care

    2025-10-06

  • Dr Lilly is the best period. He knows my case well. He orders all appropriate tests and labs and reviews all the results with me. He never makes you feel rushed and answers all questions fully.

    2025-10-06

  • Excellent physician in all aspects. Great support staff as well from front desk folks to nursing assistant and the EKG administrator.

    2025-10-05

  • Dr Lilly is amount the most outstanding physicians I have had the pleasure and fortune of caring for me.

    2025-10-05

  • I feel quite comfortable with Dr. Lilly about my cardiac concerns. He is engaged, thoughtful and clear in his explanations. I value greatly the counsel he gives me.

    2025-09-30

  • He is excellent

    2025-09-28

  • Dr Lilly is a dedicated, caring physician. I am happy to be in his practice.

    2025-09-28

  • Great experience!!!

    2025-09-24

  • Dr Lilly has a very calming and supportive manner. He gave me enough time to talk and I listened.

    2025-09-24

  • Dr Lilly, He always makes my appt comfortable and he always listens to my concern. Thank you, Dr. Lilly

    2025-10-01

  • In addition to the receptionists who were friendly and professional, the medical assistant who did an ekg and vitals was friendly, upbeat and professional. Dr. Lilly is a great physician. On this day. I also had an echo at 8am. I left my house 90mins earlier but was still 20 mins late. The staff and tech were so kind. I would like to thank them for being so accommodating also.

    2025-09-25

  • Dr Lilly is wonderful, excellent and caring Doctor. He has been my Heart Doctor for many years and keeps me Healthy! I have no worries about my heart because he is my heart Doctor. [redacted] To have Dr Lilly as my Heart Doctor, the long drive is worth it! Thank You Dr Lilly, [redacted]

    2025-09-22

Accepted Insurance

  • Tufts Medicare Preferred
  • Wellpoint
  • WellSense
  • MassHealth
  • Cigna
  • Harvard Pilgrim Health Care
  • Medicaid NH
  • Multiplan
  • Medicaid RI
  • Tufts Health Plan
  • United Health Care
  • Commonwealth Care Alliance
  • Blue Cross Blue Shield
  • Railroad Medicare
  • Medicaid ME
  • Medicaid CT
  • Beech Street
  • Blue Cross Blue Shield Medicare
  • Aetna
  • TriCare
  • Fallon Health
  • Medicaid VT
  • Senior Whole Health
  • Humana
  • Coventry
  • Mass General Brigham Health Plan
  • Medicare