Loading Complete
Nancy J Wei

Nancy J Wei, MD

Endocrinology

Highlights

Languages

  • Chinese - Mandarin
  • English

Gender

Female

About Nancy J Wei

Nancy Wei, MD MMSc is an Assistant Professor of Medicine at Harvard Medical School and the Chief Medical Informatics Officer at Massachusetts General Hospital.

She earned her medical degree from Harvard Medical School, her masters of medical science from Harvard Medical School, and completed her internal medicine residency and fellowship in endocrinology, diabetes and metabolism at MGH.

In her role as the MGH/MGPO Chief Medical Informatics Officer, she leads the optimization, development, implementation, and support of clinical information systems across the hospital.

Locations

  1. Massachusetts General Primary Care Clinic at Chelsea Community Health Center
  2. Massachusetts General Diabetes Clinical Center

Expertise

Education

  • Fellowship: Massachusetts General Hospital, Endocrinology, Diabetes, & Metabolism, 2012
  • Residency: Massachusetts General Hospital, Internal Medicine, 2009
  • Medical Education: Harvard Medical School, 2006

Board Certifications

  • Internal Medicine: American Board of Internal Medicine, 2011

Insurance

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

Ratings & Reviews

4.9 out of 5

214 ratings, 88 reviews

The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.

How likely would you be to recommend this provider to your family and friends?
Search reviews
  • Reviewed on 3/3/2026

    Dr Wei is the best. Knowledgeable, kind and compassionate.

  • Reviewed on 2/18/2026

    Always a great experience

  • Reviewed on 2/16/2026

    I've been a patient of Dr. Nancy Wei's for a number of years now and with her care, advice, knowledge, and experience has improved the quality of my life living with Type 1 Diabetes for over 55 years. I am Very Thankful to be her patient. She is the BEST !

  • Reviewed on 2/12/2026

    Dr. Wei was the first diabetic practitioner that I have seen that actually listened to what I had to say. [redacted] It was a pleasure dealing with Dr. Wei. I look forward to seeing her again.

  • Reviewed on 2/27/2026

    Dr. Wei is probably the best doctor I've dealt with anywhere.

  • Reviewed on 2/25/2026

    She was very attentive, knowledgeable, polite, caring.

  • Reviewed on 2/25/2026

    Dr. Wei is very attentive and listen to my concerns regarding medications and other issues that I have. She collaborates with other providers to ensure the best patient experience. Thank you!

  • Reviewed on 2/6/2026

    Top notch experience with all those involved with patient care.

  • Reviewed on 1/28/2026

    Dr Wei always explains everything and answers all questions I have and if need to contact her after responds quickly

  • Reviewed on 1/26/2026

    My first visit and she is wonderful. I look forward to having my care under her

  • Reviewed on 1/25/2026

    Nancy Wei is fantastic. She explains everything in detail. She very kind and a good listener. She has helped me out tremendously. You should clone her.

  • Reviewed on 1/25/2026

    I found my appointment clear, comforting and very helpful!

  • Reviewed on 1/23/2026

    Nancy was terrific. Some of the NP's need to improve their attitude(s).

  • Reviewed on 1/22/2026

    Very personable, attentive, and thorough.

  • Reviewed on 1/22/2026

    Dr. Wei is an exceptionally considerate and thorough doctor and I have the utmost respect for her. [redacted] Thank you.

  • Reviewed on 1/12/2026

    There's nothing more to add... Dr. Nancy Wei is the best, understanding provider out there . She helped me understand my tricky hypoglycemia, and how to eat better and manage my sugars . She understands how I feel with my symptoms and offers suggestions and management strategies. She is THE best MD to manage my situation. MANY thanks to her !

  • Reviewed on 12/29/2025

    She was outstanding explaining everything!

  • Reviewed on 12/29/2025

    Great experience.

  • Reviewed on 12/29/2025

    [redacted] did televisit.meeting started late.visit seemed rushed.provider is courteous.

  • Reviewed on 12/28/2025

    Dr. Wei was very thoughtful, caring, and listening. She made me feel very comfortable at the visit and I appreciated her.

  • Reviewed on 12/26/2025

    Both my husband and I see Dr Wei. To say that we look forward to an appointment with her is an understatement. Her advise is spot on and we feel our good health is a priority of hers. She is always upbeat, positive and most professional!

  • Reviewed on 12/15/2025

    Dr Wei is outstanding! Losing Dr [redacted] after 31 years (Retirement) was an adjustment but Dr Wei made that transition a lot easier.

  • Reviewed on 12/11/2025

    Very positive.

  • Reviewed on 12/7/2025

    Dr. Wei is excellent, competent and very helpful.

  • Reviewed on 11/30/2025

    She is terrific!

  • Reviewed on 11/25/2025

    This was my first visit with Dr. Wei as my previous doctor retired at the end of July. I was nervous about changing doctors as I was very fond of my previous MD. Dr. Wei was just as kind as she could be, she listened attentively and showed respect for me as a patient. Very impressed!

  • Reviewed on 11/25/2025

    Nothing MGH doesn't listen

  • Reviewed on 11/21/2025

    Great experience! Thank you!

  • Reviewed on 11/17/2025

    Dr Wei and staff are exceptionally courteous, knowledgeable and professional.

  • Reviewed on 11/16/2025

    Yes, I am very happy with Dr Wei she is very knowledgeable and very caring and kind and put me on the right track for my diabetes care and i always look forward to seeing her again . She wrote me out a great plan for my diabetes and weight loss, which is easy to follow and I was just so very happy to see her and glad I made my appointment.

  • Reviewed on 11/16/2025

    Great experience wood recommend them to everyone.

  • Reviewed on 11/12/2025

    Great physician, helpful, clear, wonderful

  • Reviewed on 11/12/2025

    OUTSTANDING! Looking forward to working with Dr Wei as i believe she will be extremely helpful as we move forward.

  • Reviewed on 11/9/2025

    Excellent provider

  • Reviewed on 11/5/2025

    Very professional and patient.

  • Reviewed on 10/31/2025

    Dr. Wei is a phenomenal endocrinologist. She helps manage my diabetes type 1 in an amazing way. And because of her, I'm healthy and doing great. NGH is very fortunate to have her and I am very lucky to have her. And so she's wonderful. I couldn't say more about her.

  • Reviewed on 10/30/2025

    I felt immediately at ease and was impressed with the attention to detail this provider presented. This was our first meeting and she was exceptionally patient and thoughtful about my questions.

  • Reviewed on 10/29/2025

    This was my first appointment with Dr.Wei [redacted]-she is terrific.

  • Reviewed on 10/28/2025

    My firs appointment with Nancy Wei and I was very pleased with her patient skills at getting to my concerns. questions & current patient status. I look forward to future appointments with Nancy.

  • Reviewed on 10/26/2025

    best

  • Reviewed on 10/23/2025

    Dr Wei was very nice and approachable; I was comfortable talking with her and I was was pleasantly surprised in time she gave me; fixed and tweaked a few things and made great suggestions-would highly recommend

  • Reviewed on 10/22/2025

    All were very personal, caring and reapectful

  • Reviewed on 10/23/2025

    This is the first time me meeting with her. She's my new diabetic endocrinologist and I think she was awesome.

  • Reviewed on 10/20/2025

    Knowledgeable and caring

  • Reviewed on 10/16/2025

    I met Dr. Nancy Wei for the first time a couple weeks ago. She replaced Dr. [redacted], who retired. I thought she was very thorough and very helpful, and I actually learned a lot of things that I had not been aware of otherwise. So, great overall first experience, and I was excited to be assigned to her after I met her.

  • Reviewed on 10/12/2025

    Very thorough and detailed

  • Reviewed on 10/9/2025

    Dr. Wei is one of the best!

  • Reviewed on 10/5/2025

    Doctor Wei is very caring. Explain things clearly

  • Reviewed on 9/28/2025

    Explains everything simply and easy to understand. This appointment was a follow-up. I learned so much about diabetes and diet.

  • Reviewed on 9/26/2025

    This caregiver is very knowledgeable about her patients and what goes on with them. She listens to them very well and is a very compassionate person. She always does what is best for her patients. Thank you.

  • Reviewed on 9/24/2025

    always excellent and responsive care

  • Reviewed on 9/23/2025

    Dr. Wei clearly read my medical records before my visit. She was thorough and kind

  • Reviewed on 9/23/2025

    Dr. Wei was professional, courteous, friendly and very knowledgeable. Would highly recommend.

  • Reviewed on 9/15/2025

    Dr Nancy Wei is the benchmark for others for emulate. Profound domain expertise. Excellent communicator. Good timekeeping. Personal attention.

  • Reviewed on 8/29/2025

    She always takes me on time and discusses everything that needs to be discussed. I think she is a wonderful provider.

  • Reviewed on 8/25/2025

    Explained clearly level of my diabetes and the options as to best medications and treatments available!

  • Reviewed on 8/20/2025

    This was my first appointment with Dr. Wei. I was very happy with how thoughtful and supportive Dr. Wei is. She was extremely thorough and made some great suggestions for me to implement which will make keeping my blood sugar levels in better control. She is very easy to talk with I am grateful to be one of her patients going forward. I believe I will continue to do extremely well with her as my new doctor. [redacted] I'm grateful to have such remarkable care.

  • Reviewed on 8/14/2025

    She listened and responded well....very appropriate and helpful

  • Reviewed on 8/13/2025

    Dr Wei is an excellent doctor because she is taking extra effort for understanding the details of the patient and to take care her patients

  • Reviewed on 8/13/2025

    wonderful what all medical experiences should be.

  • Reviewed on 8/10/2025

    Dr Wei is always professional a great communicator and I feel so lucky

  • Reviewed on 8/6/2025

    Dr. Wei is an amazingly wonderful physician and person. Professional. Knowledgeable, caring , nurturing!

  • Reviewed on 8/5/2025

    Very nice and assertive Dr. I feel very comfortable and confident about her.

  • Reviewed on 7/21/2025

    Excellent clinician and person

  • Reviewed on 7/20/2025

    Nancy is a top notch doctor. She really knows her stuff. And ask all the right questions.

  • Reviewed on 7/20/2025

    Dr Wei was professional, attentive and friendly. She answered all my questions and was extremely helpful in understanding my difficulty with diabetes. I couldn't have had a better experience.

  • Reviewed on 7/16/2025

    It's a comofrting feeling to see someone who understands and is willing to speak their mind in my care. I am happy to have had my Doctor for as long as I have. She is a kinbd and patient Doctor.

  • Reviewed on 7/16/2025

    Dr Nancy Wei was excellent. Knowledgeable, kind, great listener, warm and couldn't have been more professional and thoughtful. I was very happy with my visit.

  • Reviewed on 7/14/2025

    Excellent doctor. Gave me very thorough instructions for my management of my diabetes.

  • Reviewed on 7/17/2025

    Provider is caring and very knowledgeable about my underlying medical conditions. She continues to work hard to keep levels under control.

  • Reviewed on 7/4/2025

    Dr. Wei is a wonderful provider. She lists carefully and answers all my questions and makes a few suggestions. And I just feel very comfortable to have her as my patient care advocate.

  • Reviewed on 6/30/2025

    very thorough, knowledgeable and helpfuland

  • Reviewed on 6/25/2025

    Dr Wei is the best doctor ever .

  • Reviewed on 6/22/2025

    Dr. Wei provides an exceptional level of care.

  • Reviewed on 6/13/2025

    Excellent doctor. She always listens to you, and I will say she's the best doctor ever I've met at MGH.

  • Reviewed on 6/11/2025

    I was not happy about the fact that the confirmed time of the appointment did not correspond to what the office had HOWEVER once with Dr Wei I was very impressed by her competency and ability to share and respond to my questions in depth. I am reassured to have her on board

  • Reviewed on 6/12/2025

    Dr. Wei takes the time to review trends in my blood sugars and makes suggestions that are very helpful. I love that she know cutting edge technology.

  • Reviewed on 6/12/2025

    Dr. Wei is outstanding. I was a patient of Dr. [redacted] for over 30 years. I thought the transition to a new doctor maybe be difficult, however Dr. Wei has exceeded all of my expectations. Dr.[redacted] will be missed, and I will always be grateful for what he has done for me (and indirectly, for my family).

  • Reviewed on 6/5/2025

    I cannot image a better care than the one I get at MGH!

  • Reviewed on 6/4/2025

    Dr. Wei is the Best Endocrinologist at MGH. I'm very lucky to be her patient. She is extremely knowledgeable with all the current treatments and trends that make living with diabetes so much easier. I am indebted to Dr. Wei for my care and good health and trust her 100%. [redacted]

  • Reviewed on 5/29/2025

    This was my mother's first-time seeing Dr. Wei. She was very kind, courteous, patient and made my mother feel like she was being listened to. My mother had a lot of questions and was overwhelmed on her first visit. However, Dr. Wei made her first appointment at ease.

  • Reviewed on 5/25/2025

    Great service

  • Reviewed on 5/25/2025

    Dr. Wei was wonderful. This was our first meeting as Dr. [redacted] has left, so we had a lot to cover and Dr. Wei was thorough and explained everything so that I was able to understand. It was an overall great experience. I am thrilled to have her as my new doctor.

  • Reviewed on 5/21/2025

    Dr. Wei provided excellent information about pre-diabetes, diabetes, and how to best manage glucose levels. She explained things very well and clearly answered all my questions. She was kind, compassionate, and professional and I am very fortunate to be a patient of hers.

  • Reviewed on 5/21/2025

    Dr. Wei is the perfect patient care doctor.

  • Reviewed on 5/19/2025

    She was terrific!!

  • Reviewed on 5/8/2025

    That is the best experience that I have ever had. [redacted]

  • Reviewed on 5/7/2025

    Dr..wei she is an awesome doctor .she gave me so much attention..listen to me..she answered all my questions.. also spent a long time with me .. would love to see her again ..