Leon Pappas, MD, PhD, MSC

Patient Feedback

4.725217 average rating from 115 reviews

• Dr. Pappas answered thoroughly and thoughtfully all of my questions. He was well prepared and extremely helpful. I feel very fortunate to be under his care.

  2026-06-04

• Extremely competent clinition.

  2026-05-22

• He is very knowledgeable and very friendly to new patients.

  2026-05-17

• I am just starting with him but everything was positive about his input.

  2026-05-17

• This was my first meeting with Dr. Pappas. He was thorough and listened to my needs. I've been added to there oncology team for follow up studies. So he was very helpful.

  2026-05-13

• It was good

  2026-05-11

• This was my first visit with Dr. Pappas, as I just moved from [redacted]. He was very helpful and well read o my charts. He is very knowledgable and explaind things clearly.

  2026-05-10

• Very professional and always looking out for my best medical care.

  2026-05-02

• Very knowledgeable and considerate. Very informative.

  2026-04-30

• He is an excellent doctor.

  2026-04-30

• I am well cared for by these providers

  2026-04-24

• This provider obviously knows his stuff but needs guidance on how to explain things to a patient who's intelligent but does not work in his field.

  2026-04-13

• Dr. Pappas explained well my situation concerning my cancer cancer care

  2026-04-12

• I feel safe and trust that Dr. Pappas is always looking out for what is best for my health.

  2026-04-04

• The care provider himself was wonderful. With each successive visit, becoming familiar with the other, and style, this provider better than matched my style, and provided what I both needed and wanted.

  2026-03-28

• Dr. Pappas was very knowledgeable and easy to understand. He was very thorough in answering all our questions. We look forward to meeting him in person.

  2026-03-26

• Dr Pappas looked very efficient, very well qualified and experienced

  2026-03-15

• Attentive, thoughtful, listened well, knowledgeable

  2026-03-14

• I felt very welcome. I felt confident. [redacted] Everybody was nice, kind, polite. Every answer was questioned the right way, and I understood every answer from the doctor and the nurses. Love going there. Love my team at Mass General Hospital with Dr. Pappas, the whole team.

  2026-02-13

• MGH has been incredible through my treatment and follow ups

  2026-02-02

• Dr Pappas was clear with the information available to him regarding my care

  2026-01-28

• He had reviewed my medical records prior to seeing me and was aware of my scan results. He listened carefully and answered my questions thoroughly. He provided possible options for future care. He was kind and respectful, and gave me all the time that I needed.

  2026-01-11

• Dr. Pappas was excellent in explaining everything to me and I feel totally confident that I'm in great hands.

  2026-01-12

• Great care, responds quickly to text questions. Listens to my concerns.

  2025-12-29

• Dr. Pappas and his staff were excellent knowledgeable and professional. [redacted]

  2025-12-29

• Part of continuing care as part of my cancer care and recovery.

  2025-12-24

• I was glad that Dr. Pappas made it a priority to have a telehealth visit since he was unable to see me in person during my visit to Mass General. I am sure Dr. Pappas has my best interest in his heart and he will make an ernest attempt to find me a slot in his clinical trials. I trust him.

  2025-12-25

• Very smart. Spoke at a high level at times.

  2025-12-20

• Dr. Pappas was most encouraging.

  2025-11-27

• Everyone I encounter is very caring and , knowledgeable

  2025-11-22

• Very professional

  2025-11-22

• Very warm caring person.

  2025-11-08

• Seems very knowledgeable and helpful.

  2025-10-10

• A very pleasant and informative visit

  2025-10-06

• very professional and compassionate - extremely knowledgeable about his specialty

  2025-10-04

• I have the highest respect for Dr. Pappas. He's a wonderful clinician and wonderful bedside manner.

  2025-10-02

• Excellent service by this care provider. Would definitely recommend him. Thank you.

  2025-09-29

• Very knowledgeable and concerned with my health challenges.

  2025-09-22

• I expected more detailed info regarding available trials in the Boston area not just MGH.

  2025-09-20

• Very professional and caring.

  2025-09-19

• The doctor was good. The nurses were good. I had a good response. I didn't wait too long. Very happy with it.

  2025-09-04