William G Tsiaras, MD, PhD

Patient Feedback

4.924068 average rating from 295 reviews

• Excellent, caring doctor.

  2026-07-06

• Dr. Tsiaras is the best.

  2026-07-05

• Dr. Tsiaras treats me regularly for wound care for a wound on my leg. He is also very much involved in my diagnosis and treatment, both with him and at [redacted] for a lymphoma. He is comprehensive, he's caring, he's empathetic, and he's very, very professional. He's an outstanding doctor who obviously knows his business very, very well. I feel very lucky to have him as my care provider. I can't imagine what else I could say. I think he's absolutely one of the best doctors I could ever, ever hope to have. Thank you.

  2026-07-03

• I loved this doctor he made me feel my worries and needs where important and he generally cared about what's i was going through. I would recommend anyone to him

  2026-07-01

• Excellent.

  2026-06-30

• Dr. Tsiaras is an exceptional doctor working to improve the management of wounds in my legs. His program has brought my wounds into stable condition that make daily living much easier.

  2026-06-30

• Dr. Tsiaras and the entire staff are a pleasure and exceptional in providing their professional services. Dr. Tsiaras in particular an exceptional doctor.

  2026-07-04

• I have seen many new doctors in the past six months to one year. My visit with Dr Tsiaris was, by far, the most beneficial encounter I have had with a provider in the past three (3) years. He was able to answer questions I asked and explain his answers for me to easily understand. Not only could I understand his answers, but I was able to relay the information to my loved ones. Previous to my visit with Dr Tsiaras I didn't have a clear understanding of what was happening with me or the best treatment for the problem as it was not explained to me in a way for me to understand. Dr Tsiaras was very helpful, brilliant, kind, personable, empathetic and everything a patient could want from a doctor caring for him/her. I feel so blessed that I was referred to him. I felt like I had been carrying the weight of the world on my shoulders as I drowned in confusion about my condition. I felt so much better after my visit with Dr Tsiaras. I finally understood my complex diagnosis, the best treatment for it, helpful measures to adapt to the difficulties my treatments presented, and could explain all of this to my loved ones!!! Dr Tsiaras is ONE IN A MILLION!!!! Thank God for him. I am so lucky, or I should say BLESSED to have met him. He is truly a doctor who cares about people and wants to help them. Finding a doctor like him is equivalent to finding "a needle in a haystack". Your practice is VERY LUCKY to have him. I hope he's treated in a way that reflects that, so he will stay.

  2026-06-27

• The provider presented a cure for my hand, which was absolutely in a horrible condition. I respect him and thankful for the care that he gave.

  2026-06-26

• Everything happened as expected. No negative surprises as always there experience with positive.

  2026-06-24

• Took time to explain what the problem on my skin was, Gave treatment options that I could choose, set followe-up plan. Dr. Tsiaras is patient, caring, wise.

  2026-06-22

• The Best. Never seems rushed and always listens. He is why I drive 90 minutes when other providers are much closer to my home.

  2026-06-22

• Dr Tsiaras is the most extraordinary, kind and caring doctor I have had in decade. He is a teacher, conscientious, explains things well and is always responsive. Someone ought to gave that man an award!!

  2026-06-21

• Excellent provider and physician.

  2026-06-18

• A doctor who practices medicine the way it should be.....patient centric.

  2026-06-14

• Dr. TSIARAS is a great provider. I've had him for several years. He's always very responsive. He's good. He's got a great personality and he's very smart. He's a delight and I'm very glad to have such a good doctor.

  2026-06-12

• dr Tsiaris is wonderful. Sometimes you have to wait for him but he takes so much care with my mom's wounds. He is kind and patient and her wounds are just awful. I don't know how the man does what he does but he prevented her from needing a skin graft. Took many months for her wound to close but he got it to heal. God bless him.

  2026-06-10

• I can't say enough good things about Dr. Tsiaras. He's wonderful and was so skilled at putting me at ease. He even made me feel okay having trainees in the room - and they were great, too. 10/10

  2026-06-12

• Brilliant thorough and exceedingly kind

  2026-06-10

• Dr.Tsiaras is an amazing clinician. Really familiar with my medical history.

  2026-06-08

• Just an amazing doctor in all aspects as far as his knowledge, experience, ability to talk with you and his people skills in how to relate to you. One of the best doctors I have had. Having an annual visit with him is a pleasant experience. So friendly and outgoing. Five stars!

  2026-06-07

• Although Dr. Tsiaras historically runs late for appointments, the wait is so very much worthwhile. Empathetic, attention to detail and knowledgeable., he is an exemplar of excellent medical care

  2026-06-06

• Dr. Tsiaras has been amazing and I've been seeing him for 15 years and I'm very pleased. Always, everything that I told you about my last visit has been true. So I highly recommend him to anybody.

  2026-06-05

• Dr. Tsiaras is wonderful!

  2026-06-01

• Thoughtful, caring, going the extra to determine the cause of my illness.

  2026-05-28

• Dr. Tsiaras was one of the most educated, caring physicians we have seen ever! BWH is so blessed to have him on their staff !

  2026-05-27

• As always, excellent care!! Very knowledgeable, thoughtful and caring individualized assessment and specific recommendations personalized to my very specific medical challenges. Very deliberate advice and helpful information for moving forward in my decision making regarding them. Also, the time needed to address all of my questions. I could not feel more grateful to be in his care!

  2026-05-24

• I had a Very good office visit.

  2026-05-25

• Great

  2026-05-25

• This provider is knowledgeable, caring, and listens to what the patient has to say.

  2026-05-24

• Dr Bill is great!

  2026-05-23

• Excellent doctor who provides very personal care.

  2026-05-21

• Dr. Tsiaras is one of the best! He is thorough, kind, and you are not rushed. I would highly recommend him to anyone who needs a dermatologist! He is awesome!

  2026-05-20

• Probably the best dermatology doctor I have ever experiences. Bright, interested, engaging, super-communicator: providing play-by-play analysis as he inspected my skin condition. Dr. Tsiaras provides an informed, thoughtful, engaging, efficient and compassionate dermatology service. I rank him at the top of all my medical experiences effective, thoughtful and compassionate care.

  2026-05-18

• Knowledgeable, friendly, easy to talk to

  2026-05-17

• Dr TSIARAS is one of the most caring, knowledgeable and thorough physicians I have ever encountered

  2026-05-15

• Dr. Tsiaras and his staff are excellent and courteous.

  2026-05-14

• Dr Tsiaras is a knowledgeable and caring doctor. He's the very best

  2026-05-14

• Very caring and knowledgeable

  2026-05-13

• Very knowledgeable and takes time to be personable.

  2026-05-10

• great!

  2026-05-11

• Great doctor

  2026-05-06

• Very satisfied with the doctor. He listens and responds in a most helpful and respectful manner. Always feel well cared for with Doctor Tsiaras.

  2026-05-08

• My dr was out of country that is why I couldn't get an earlier visit. But let me tell you he was worth the wait! Very informative,knowledgeable, compassionate dr. He personally followed up with lab results the next day. I can't say enough positive about him!

  2026-05-06

• He is the best.

  2026-05-06

• Excellent clinician, thorough, attentive explains everything in detail. Understanding and compassionate.

  2026-05-03

• Very good as usu

  2026-04-21

• Dr Tsiaras does a good job explaining everything when I see him, for my annual mole check

  2026-04-20

• There was a mix up about my appointment and I waited over an hour before being seen. This has never happened in this office before and my provider gave me a heartfelt apology.

  2026-04-19

• Dr. Tsiaras was an awesome doctor, one of the best I've ever seen, took as much time as I needed to understand the condition, explained the implications of certain treatments, and offered me assurance that he would take good care of me. So I would highly recommend him.

  2026-04-17

• I got a very good experience

  2026-04-25

• Honestly, Dr. Tsiaras is the best doctor I've ever had to deal with.

  2026-04-15

• I've had Dr Tsiaras for many years & rely on his knowledge & judgement on any questions or concerns I have.

  2026-04-12

• Excellent MD

  2026-04-11

• After our appointment, the last day we were in to see Dr. Tsiaras, my wife and I were talking about how polite all the nurses, the staff, the receptionists, and the doctors were that were there. We thought everyone went above and beyond. We never felt better served than we did at your office. Best place we've ever been.

  2026-04-10

• Dr. Tsiaras is the best. He is an excellent listener, is caring and interested. He is well versed in our previous visits. You could not ask for a better doctor.

  2026-04-09

• All was wonderful.

  2026-04-08

• Dr. Tsiaras is a very kind, patient doctor who listens to all my concerns and always gives me very good advice and the time needed to respond to my questions is always very sufficient.

  2026-04-08

• I don't care how long I have to wait to be seen. Dr. Tsiaras is worth waiting for.

  2026-04-06

• Dr. Tsiaras treated my husband a number of years ago and I'm thrilled to have him as my provider now as well. He's an excellent doctor, one of the very best I've ever encountered. A real credit and a real gentleman. Just an all-around great guy.

  2026-04-05

• He took his time. I did not feel rushed

  2026-04-05

• Dr. Tsiaras is a wonderful doctor. I am glad he is so much younger than I am so he will hopefully not leave or retire for a long time. He is smart, kind and really listens. I wish all doctors were like this!

  2026-04-05

• Dr. Tsiaras is top notch.... He is kind , caring , compassionate, sincere, friendly. He listens carefully explains everything in understanding way. He is always upbeat and smiles. He's a gift to all his patients.

  2026-04-04

• Dr. Tsiaras is consistently engaged in my appointments and is alert to changes in conditions and circumstances.

  2026-04-02

• He's simply the best.

  2026-03-31

• Dr. Tsiaras was professional, intelligent, innovative, empathetic, funny, respectful, and being referred to him was the best thing that could have happened for my wound care. I came up from [reacted], New York. Over the course of 13 months, I saw him seven times, seven trips to Boston, and I do not regret one minute of it. He was terrific.

  2026-04-03

• He is the most caring, sensitive doctor I know. He is smart and full of knowledge and my husband and I trust him with our lives. Make sure u take good care of him. He is a definite keeper

  2026-03-31

• Great experience with Dr. Tsiaras

  2026-03-30

• This was an annual checkup and was fine.

  2026-03-29

• The care was thorough and complete.

  2026-03-22

• Dr. Tsiaras is always helpful and informative.

  2026-03-19

• Dr. Tsiaras is one of the brightest and most caring physicians I have ever seen as a patient. Knowledgeable and patient.

  2026-03-18

• Dr. Tsieras was absolutely terrific and he always is. He is extremely intelligent, very knowledgeable about many things and is kind, empathetic and a really terrific doctor. I would recommend him highly to anyone.

  2026-03-20

• Dr. Tsiaras is a very thoughtful, collaborative provider who has a fantastic memory. So anything that we've discussed, even if it was three years ago, five years ago, if it applies to anything that's happening now, he remembers what discussions we've had and what he prescribed and my response to whatever medications I've had and so on. So it makes things much, much easier to understand when someone actually remembers what you've had to say.

  2026-03-18

• Excellent

  2026-03-15

• The doctor was very thorough, well prepared, had printed out and read my epic chart history for prior treatment, explained the options, talked through various scenarios, got my input. I couldn't have asked for a better experience from that doctor in beginning the process of treating my diabetic, ulcered wounds. Very, very pleased.

  2026-03-13

• [redacted] With respect to the provider himself, I found him caring and receptive to my concerns and addressed each six concerns and he addressed each one individually in a thoughtful manner.

  2026-03-12

• Excellent experience!

  2026-03-08

• As always, Dr. Tsiaras was thorough, thoughtful, helpful, supportive and so much more. I have my complete trust in him and the decisions he makes about my treatment.

  2026-03-05

• Dr. Tsiaras' office all the way around from reception to nurses to Dr. Tsiaras himself, amazing of people. The knowledge that they have, I would definitely refer them not a 10 but a thousand. Anyways, nothing but good things.

  2026-02-27

• Dr Tsiaras is a sensitive caring doctor.

  2026-02-18

• Start of appointment ran a little late, but visit was not rushed at all. Very productive appointment.

  2026-02-17

• Everything was great

  2026-02-15

• Excellent very thorough appointment

  2026-02-24

• Dr. Tsiaras was far and away the best dermatologist that I have ever visited. He was thorough. He explained everything. He was careful. He was kind. He did a great job. And I would recommend this doctor enthusiastically to anyone who asked.

  2026-02-11

• Always professional and caring. Very thorough in covering my medical issues and explaining the details and medications. Exceptionally kind and friendly. Schedules regular appointments. Only one occasion I needed an appt. inbetween my regular visits, but understandably he was totally booked.

  2026-02-10

• Dr Tsiaras is great. [redacted]

  2026-02-08

• Dr. Tsiaras is an outstanding physician, able to ally concerns and explain everything thoroughly. He is definitely among my top docs of my many specialists.

  2026-02-08

• I wish more doctors were like this doctor. Never rushing you, always listening and repectful.

  2026-02-08

• Bill Tsiaras is an exceptional doctor. He is thorough, he is kind, he's patient, and he's the best doctor I have, and I have a number of doctors. He's extraordinary.

  2026-02-06

• Hi there. I just wanted to add that he was hands down probably one of the best, if not the best, doctors I've seen in the Brigham system. He took an incredible amount of time to educate me on every single thing that we discussed, to answer my questions thoroughly, and most importantly, he seemed to genuinely enjoy what he was doing. It just showed, and I just can't stress enough what a wonderful doctor he is, and just what a difference it makes to a patient. I never particularly loved going to a dermatologist or getting my skin checked, and now I will look forward to future visits with him. So can't say enough good things. Really hope this feedback is received. Thank you.

  2026-02-06

• MGB is fortunate to have Dr Tsiaras. Incredibly talented

  2026-02-04

• I am always satisfied here

  2026-02-04

• Excellent, on time, good explanation of everything.

  2026-02-01

• This provider was very knowledgeable, helpful, and I enjoyed my appointment very much.

  2026-01-28

• I wish I could clone thos doctor or at least his mannerisms and place them in my pcp and gi doctor

  2026-01-28

• Dr. Tsiaras is wonderful. He is a wonderful clinician, very, very experienced, explains everything thoroughly, takes all the time needed and is very patient and has a wonderful demeanor that puts his patients at ease. I cannot say enough wonderful things about him, but I appreciate his good care.

  2026-01-28

• I love Dr. Tsiaras [redacted]

  2026-01-26

• Dr. Tsiaras is one of the most caring, interested and engaged providers I've ever seen. He is so extremely thorough but also really interested in you and your life and your situation. I couldn't appreciate him more.

  2026-01-25

• I have been seeing Dr. Tsiaras for close to a decade. I highly recommend him.

  2026-01-25

• Warm, friendly, professionsl and skilled physician.

  2026-01-22

• Dr. Tsiaras is a wonderful physician and dermatologist in every sense of the word. In my view, he is the ideal type of what you want in your physician and, in particular, dermatologist.

  2026-01-14

• Dr. Tsiaris was an extremely pleasant and very engaged doctor. He concentrated very closely with my ongoing condition and he was very enthusiastic about progress being made, but actually it's a little slower than I expected. So that was sort of the drawback. He had a couple of good ideas about things to follow up with and other routes to explore and so forth, but they sort of didn't happen punctually, I would say. But he recommends me for several things recently that have changed that opinion just a little bit, but it's been a recent change in his approach that I'm reporting here. Thank you.

  2026-01-16

• Professional and a great experience.

  2026-01-14

• [redacted] Dr. Tsiaras is always amazing.

  2026-01-15

• Very thorough and professional.

  2026-01-13

• Dr Tsiaras is by far one of the best doctors I have ever seen. He is extremely thorough, responsive, highly knowledgeable, and kind.

  2026-01-11

• I trust his decision on my health

  2025-12-31

• nice kind helpful doctor

  2025-12-29

• [redacted] The appointment was fantastic; [redacted]

  2025-12-29

• Dr William Tsiaris by far is one of the best doctors I have ever had. He is not only one of the nicest and smartest Drs he is also always upbeat and positive. He takes the time to listen to you and answers all your questions and explains things in a manner that's makes sense and is easy to understand. He is the BEST!

  2025-12-24

• Dr Tsiaras is always cheerful, upbeat and kind. He explains things and listens to my concerns. He takes away any anxiety I have about my skin check. I greatly appreciate his candor as well as his kindness.

  2025-12-24

• He's amazing.

  2025-12-22

• Long relationship very valuable

  2025-12-19

• I've been seeing this dermatologist, Dr. Tsiaras, for a number of years. He is always kindly, polite. He's just wonderful. I would give him A ? in every single area. And he has done a very good job in regard to freezing or removing all kinds of pieces of my skin that are from sun damage when I was growing up. And like I said, he's absolutely wonderful.

  2025-12-19

• Dr T is fantastic; warm, professional, listens carefully. Highly recommend!

  2025-12-17

• Very caring, well prepared, remembered me well from a visit of a year ago. Terrific interaction and terrific doctor.

  2025-12-16

• Everyone that I interact in this with is personable, respectful and professional. The entire Brigham Network runs frictionless from a patient perspective.

  2025-12-16

• Dr. Tsiaras has been a very important care provider for me. He has seen me through a very rare disease that now is getting worse and he's trying to help me in every way possible to get to the bottom of it. He supports my leg wound and takes care of that. He's just been an amazing doctor. They just don't make them like him. I have nothing but great things to say about Dr. Tsiaras

  2025-12-11

• Knowledgable, communicative, smart, detail orientated, wish all my providers were in this league

  2025-12-11

• Always remembers facts about me or has read up on the chart before he meets with me

  2025-12-08

• Dr. Tsiaras always spends time with me. He knows me, my medical history, my family history, and always explains things and answers all of my questions.

  2025-11-30

• An outstanding professional.

  2025-11-27

• As always everyone was extraordinarily helpful, professional and thorough.

  2025-11-26

• Dr. Tsiaras is always professional and friendly and spends time answering all of my questions. I feel very fortunate to have him as my physician. Thank you. Bye.

  2025-11-28

• Dr. Is fabulous in every way - I feel blessed to be in his care- he is the best!

  2025-11-24

• Dr, Tsiaras is the best. Always feel heard and cared for and never rushed.

  2025-11-24

• He is outstanding!

  2025-11-12

• He was wonderful

  2025-11-13

• Very pleasant and knowledgeable and good personal connection

  2025-11-12

• EXPLAINED EVERYTHING

  2025-11-10

• Dr. Tsiaras is a very kind and caring physician. He spent a good amount of time with me and addressed my skin concerns and made some recommendations.

  2025-10-26

• 5 star doctor!

  2025-10-26

• Dr. Tsiaras is always helpful and clear in his explanations of any skin problems. He listens carefully and is very thorough on his examinations.

  2025-10-25

• Dr Tsiaras is a great provider who spends all the time needed to address your concerns and explains everything in everyday language

  2025-10-15

• Very knowledgeable

  2025-10-13

• He is fabulous, a good doc, all you could want. He is my partner's dermatologist too and so I'm there for his appts too. Because my partner has had surgery and radiation for skin cancer I am always impressed by his smarts, his kindness, his attention to detail and his familiarity with both our charts.

  2025-10-12

• I saw Dr Tsiaras at the dermatology. Clinic. He is incredibly knowledgeable and one of the most personable physicians I have ever met. His exam is so thorough. He listen to every thing I say and explains things so clearly. I hope I never have to change dermatologists. He is outstanding.

  2025-10-08

• Pleasant experience and learned from the appointment

  2025-10-05

• Dr. Tsiaras is a caring, thoughtful provider.

  2025-10-05

• One of my best experiences ever Fantastic doctor. Brilliant, knowledgeable, kind and caring.

  2025-10-05

• This doctor was one of the warmest, friendliest doctors I've ever met. He took my concerns seriously. I was a bit worried that they might seem trivial but he never made me feel that way. He treated my skin issue right there, and did more than I was hoping for. I would definitely go to him if I had another dermatological issue.

  2025-10-04

• Dr. Tsiaras is very kind and explains things thoroughly so that you understand. He takes his time to make sure that we understand. He knows that we came a long way to see him. This is the second follow-up, and we're very pleased with the treatment and results. He also has a nice manner, very pleasant.

  2025-10-02

• I really feel taken care of

  2025-10-01

• Staff genuinely cares about my well being.

  2025-10-01

• I felt totally comfortable throughout the visit. My provider explained everything to me clearly.

  2025-10-01

• I am very fortunate; he's the best.

  2025-10-01

• Dr.Tsiaras Is a doctor who listens to all your concerns and offers solutions.I would give him a 10

  2025-09-28

• Professional and helpful.

  2025-09-23

• Very positive experience

  2025-09-23

• Kind caring patient with this old hard of hearing lady. Wonderful experience every time.

  2025-09-22

• Dr. Tsiaras is outstanding. He is smart, kind, extremely thorough. He explains things very well and listens carefully. I would give him seven stars (out of five)!!

  2025-09-18

• Dr Tsiaras explains everything so well that I feel as though I am in medical school. I love the detail.

  2025-09-17

• Dr Tsiaras is truly one of the most thoughtful kind hearted physicians who is beyond exceptional at focusing on patient needs and not any kind of cookie cutter recipe. Couldn't be happier with the car receiving and would recommend him to anyone who is in need of True medical care. He is the best!

  2025-09-15

• Dr. William Tsiaras is fantastic to work with. I've seen him for a few years now. He is very thorough, very friendly. Asked me about my life and my family. I appreciate that he is very personable. I also appreciate that he's very professional. He definitely knows what he's talking about and he remembers my case history and he follows up on things. He has been fantastic to work with through the years, and I actually even just recommended him to a family member. That's how happy I am with him and his professionalism. [redacted].

  2025-09-17

• Dr Tsiaras is extremely professional and his congenial and confident manner puts me at ease

  2025-09-14

• I am so lucky to have Dr. Tsiaras following my care. He finds problematic areas early and treats them before major issues arise. He cares deeply for his patients and their well being.

  2025-09-14

• My provider is outstanding!!

  2025-08-27

• We covered all areas of concern thoroughly

  2025-08-26

• Excellent, as always.

  2025-08-21

• Very happy with my provider. Help me greatly with my medical problem. Have great confidence in my provider treating my problem.

  2025-08-21

• Dr. Tsiaras, as always, listened to my concerns, took time to explain things to me, was thoughtful, caring, and highly professional. He sees the whole person and is dedicated to finding solutions to whatever problems occur.

  2025-08-21

• Consistently excellent care.

  2025-08-19

• Dr. Tsiaras is the best medical provider I have ever had. He is knowledgeable, personable, caring and easy to talk to and understand. He goes the extra mile for his patients.

  2025-08-18

• The doctor made me feel very comfortable, answered all my questions, and explained everything that needed to be done very well.

  2025-08-17