
Highlights
Languages
- English
Gender
FemaleLocations
- Mass General Brigham Endocrinology Clinic at South Weymouth
- 541 Main Street, Suite 210, South Weymouth, MA 02190
- Get Directions
- phone: 781-952-1280
- fax: 781-952-1570
Expertise
Education
- Fellowship: SUNY Stony Brook University Hospital, Clinical Endocrinology, 2010
- Internship: Thomas Jefferson University Hospital, Internal Medicine, 2008
- Medical Education: SUNY Upstate Medical University, 2005
Board Certifications
- Internal Medicine: American Board of Internal Medicine, 2010
Insurance
- Aetna
- Beech Street
- Blue Cross Blue Shield
- Blue Cross Blue Shield Medicare
- Cigna
- Commonwealth Care Alliance
- Coventry
- Fallon Health
- Harvard Pilgrim Health Care
- Humana
- Mass General Brigham Health Plan
- MassHealth
- Medicare
- Medicare ACO
- Multiplan
- Network Health
- Railroad Medicare
- Senior Whole Health
- Tricare
- Tufts Health Plan
- Tufts Medicare Preferred
- United Health Care
- Wellpoint
- WellSense
Ratings & Reviews
4.9 out of 5
380 ratings, 157 reviewsThe 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.
- Reviewed on 3/4/2026
Dr Zamfirescu was excellent
- Reviewed on 3/4/2026
Love Dr Z. She's been my provider a long time. I feel fortunate to have a Doctor like her handling my care.
- Reviewed on 3/4/2026
Words cannot express how we feel about Dr Z. She and her providers are THE BEST!
- Reviewed on 2/20/2026
Very happy with my visit.
- Reviewed on 2/19/2026
She was thorough and explained info so I could understand
- Reviewed on 2/18/2026
Dr Zamfirescu is the best doctor.She is a leader in her field and I am fortunate to have her as my doctor.
- Reviewed on 2/18/2026
I have been a patient of this provider since 2015 and have the greatest level of confidence in her advice and care. She listens patiently and carefully and is very respectful of my questions and input regarding my care.
- Reviewed on 2/24/2026
Excellent Doctor explained the test results
- Reviewed on 2/16/2026
Dr. Zamfirescu was very professional, very helpful, and I would recommend her highly.
- Reviewed on 2/13/2026
This was the first time I saw Dr. Z. She was very thorough and up to date with my thyroid surgery.
- Reviewed on 2/27/2026
Dr Z is one of the most knowledgeable and respectful physicians in have ever met. She understood all of my problems and dealt with all of them. Highly recommend her
- Reviewed on 2/26/2026
She is respectful, thorough, and focused on my health needs since our last visit and in to the year.
- Reviewed on 2/25/2026
She is great
- Reviewed on 2/10/2026
In today's healthcare world where there are long wait times and rushed appointments , I have to say I felt the exact opposite with this experience. I was seen quickly, everyone was exceptional, I felt heard and cared for by everyone and I didn't feel rushed. Thank you for all of that. It really matters.
- Reviewed on 2/10/2026
I thought Dr. Z is an amazing physician. [redacted]
- Reviewed on 2/9/2026
Dr. Zamfirescu is very kind and compassionate and she really listens and gives appropriate advice.
- Reviewed on 2/8/2026
Dr. Zamfirescu was extremely kind in picking back up with my medical history after we hadn't connected for a few years. She was attentive and offered clear goals and expectations for treatment going forward, doing a phenomenal job and contextualizing medical decisions by referencing any past milestones or diagnoses. Her plan of care was also intuitive to follow, and having the chance to work with her was amazing given that she was willing to see me immediately. Thank you, Dr. Z!
- Reviewed on 2/1/2026
I have the upmost confidence with Dr. Z. She cares about providing a good experience for the patient.
- Reviewed on 1/28/2026
dr. z was wonderful & very caring she explained things to me& made appts easy for me to attend.
- Reviewed on 1/23/2026
quick appointment, very informed about my medical history, recommended procedure conducted day after consultation
- Reviewed on 1/21/2026
Dr Z is very knowledgeable and personable and she seem to care very much about my health and making sure I understand the information she provides me.
- Reviewed on 1/20/2026
She always has my best interest at heart
- Reviewed on 1/19/2026
Dr Z is an awesome, caring, thoughtful Doctor. She listens, explains, and takes the time to cover all the bases for the appointment and never is in a hurry which is something a lot of Doctors don't do.
- Reviewed on 1/19/2026
Dr Zamfirescu is top of the line. She is thoughtful, knowledgeable and wise. I am very impressed.
- Reviewed on 1/17/2026
Always a pleasure seeing Dr Z. She is genuinely interested and caring about my health issues.
- Reviewed on 1/12/2026
Excellent care, listens thoroughly and made a plan together.
- Reviewed on 1/10/2026
Yes, my experience is very good. The doctors listen to me, the nurses listen to me, and I'm very happy with them. Thank you.
- Reviewed on 1/11/2026
Dr Z is thoughtful regarding her care. I feel confident that my care is in good hands.
- Reviewed on 1/9/2026
I thought she was very good, very knowledgeable, and very pleasant. I was very pleased with her.
- Reviewed on 1/7/2026
I always feel well informed and confident that I am getting the best care.
- Reviewed on 1/7/2026
Always professional and trustworthy
- Reviewed on 1/4/2026
Dr. Z is the best, always helpful, always listens, always makes me feel heard, and helps make me feel that I'm a partner in my endocrine care.
- Reviewed on 12/31/2025
Doctor was and is excellent. The nurse was burnt out. Did not say her name, did not repeat blood pressure or oxygen ect.. I had to ask for my vitals she just took. She was not friendly. Burnt out, appeared like a robot. Not rude but was not engaged to the process or person in front of her.
- Reviewed on 12/31/2025
She is an excellent Dr and I am lucky to have her on my team.
- Reviewed on 12/29/2025
Yeah, Dr. Z is excellent.
- Reviewed on 12/25/2025
Dr. Z. was extremely thorough and knowledgable. She was familiar with my difficult and complex recent history. She explained different treatment options so that I could make an informed decision. She had a great bedside manner and was very compassionate. Excellent doctor.
- Reviewed on 12/24/2025
She gave excellent care, very good explanation, and my husband and I both really appreciated it.
- Reviewed on 12/20/2025
Very kind caring and professional. Explains everything.
- Reviewed on 12/14/2025
Very easy to talk to, the doctor was very thorough in her assessment of my questions regarding the medication I am currently taking.
- Reviewed on 12/14/2025
Best Dr. I have. Very thorough and always listens
- Reviewed on 12/11/2025
Dr Z is very thorough and professional.
- Reviewed on 12/8/2025
Dr. Zamfirescu is an excellent doctor. She is kind, compassionate, concerned, and very invested in how I am doing medically. I would recommend her to anyone.
- Reviewed on 12/8/2025
She is one of the best doctors I've ever had. Listens and explains everything
- Reviewed on 12/7/2025
First visit with Dr.Z. Very comfortable and pleased with my appointment.
- Reviewed on 12/5/2025
I just wanted to contribute that I felt that Dr. Zamfirescu was exceptional. She was very thorough with me. She was very, very, very kind. I didn't feel rushed at all. She was very, very just caring and concerning about the reason I was with her and she explained things in a way that I understood. And also she took the time to call me with the results, which is very rare these days, if it even happens at all. She was just above and beyond kind. And I have already recommended anyone that I know of who may be in need of an endocrinologist to please reach out to her because she was exceptional. Thank you.
- Reviewed on 12/4/2025
I've been with Dr. Zamfirescu for a little while and she is always professional and kind and very, very pleasant to go to. I don't get all agitated when I have to go see her. Thank you.
- Reviewed on 12/1/2025
First visit and I will definitely continue under her care. Very caring and informative.
- Reviewed on 12/3/2025
She is very competent and very caring and compassionate
- Reviewed on 11/24/2025
She's a very good provider. She gets to the point very quickly. She listens well. Even though she was not aware of the results because of your portal being very difficult to transfer information on or by, she came up to speed quickly by listening to me give her the results and then she was able to get on the computer and see some other information that was pertinent and she actually gave a lot of credit to my other, to my PCP and said that he was doing a great job managing my thyroid issues.
- Reviewed on 11/23/2025
She was clear about everything.
- Reviewed on 11/22/2025
Dr. Z has always been soft spoken, attentive and explains everything thoroughly.
- Reviewed on 11/19/2025
She is best and very informative provider. I have recommended her to family and friends.
- Reviewed on 11/19/2025
pleasant and knowledgeable
- Reviewed on 11/19/2025
Dr. Zamfirescu is very attentive and responsive to questions asked and information I request. She is never in a hurry or abrupt and is willing to spend as much time as I need at my appointments. I wish all doctors were as kind and attentive as she is.
- Reviewed on 11/12/2025
Excellent for over a decade.
- Reviewed on 11/12/2025
Dr Z is awesome. I couldn't say enough that would tell any survey how much how wonderful she is. She is 100+
- Reviewed on 11/13/2025
Excellent
- Reviewed on 11/12/2025
I am so happy I made the decision a year ago to see "Dr Z".........she is on top of It all!
- Reviewed on 11/15/2025
Dr Z has been a wonderful provider overseeing my diabetes journey for the past six years. My future appointments are always set up when I am checking out. Times that I have needed questions answered or advice or changes in my insulins, I have gone into my portal and have within hours have had a response to my needs. Dr Z or her NP have always got back to me in a timely manner. How fortunate was I to have found Dr Z by chance, after a visit to urgent care suggested that I was a diabetic ...
- Reviewed on 11/8/2025
Dr Z is a wonderful and caring person who truly cares for her patients well being. I would highly recommend her.
- Reviewed on 11/6/2025
Dr Zamfirescu is astute! She picks up on blood tests that have been overlooked before and were very important. And she is extremely knowledgeable. I also love that she explains her thinking to me and respects my input. She is an excellent serious doctor.
- Reviewed on 11/4/2025
The doctor listened and provided her input so I understood. She spent a lot of time gathering history and making a plan. Very professional.
- Reviewed on 11/6/2025
Very satisfied with the doctor's care
- Reviewed on 11/6/2025
Dr Z is a highly competent specialist who provides excellent care.
- Reviewed on 11/4/2025
Thank you Dr. Z
- Reviewed on 11/3/2025
She's great and thorough..
- Reviewed on 11/1/2025
I have seen multiple endocrinologist and Dr. Zamfirescu is the first one who did testing and knew about my medical conditions! Kudos!
- Reviewed on 10/29/2025
Great care and patient services in at timely manor
- Reviewed on 10/24/2025
dr Zamfirescu is always very professional and courteous to me and always willing to listen if i need to say something in regard to my health she is the best!
- Reviewed on 10/22/2025
Great!
- Reviewed on 10/20/2025
Always very comfortable!
- Reviewed on 10/16/2025
very polite
- Reviewed on 10/15/2025
Professional and knowledgeable
- Reviewed on 10/13/2025
no complaints
- Reviewed on 10/12/2025
My provider is wonderful .
- Reviewed on 10/9/2025
I have been seeing Dr. Zamfirescu for almost 15 years and I have been very happy with her and I have recommended my friends and family go see her.
- Reviewed on 10/10/2025
She was awesome, period. She listened carefully. She gave me great feedback. She made me feel good. And I will highly recommend her to other people, period. Thank you.
- Reviewed on 10/6/2025
Dr Z. is the best!!
- Reviewed on 10/2/2025
Very satisfied. The doctor was patient, kind and very understanding and explained things in a way I could understand.
- Reviewed on 10/2/2025
Dr Z is always attentive and listens to my concerns and answers my questions.
- Reviewed on 10/1/2025
Dr Z is always courteous and thorough. She listens to my questions and concerns and gives me honest answers. She is my favorite doctor.
- Reviewed on 10/1/2025
My favorite doctor. Nothing but great things when Dr. Z sees me. She is absolutely awesome!
- Reviewed on 9/29/2025
Dr. Z is very professional and I think she's a wonderful doctor. Thank you.
- Reviewed on 9/25/2025
All great
- Reviewed on 9/24/2025
Dr Z is wonderful
- Reviewed on 9/24/2025
The convenience of testing and a physician in the same location can't be overstated. This means the difference between 2 hours out of my day for a trip to the Stetson Building or six plus hour day traveling to Boston to be seen, in which case my wife has to work from home in order to pick up our daughter from school. An increase in telemedicine would also help with patient convenience.
- Reviewed on 9/22/2025
I think she was very thorough and she explained everything so I could understand it. I appreciated that very much.
- Reviewed on 9/22/2025
My doctor was ready for the Zoom call and had my medical records in front of her. She was kind and explained some things that would help me.
- Reviewed on 9/25/2025
I have had the privilege of being Dr. Z's patient for many years and continue to be comforted in knowing that she always takes the time to carefully analyze my condition, provide the best treatment, & explain it to me.
- Reviewed on 9/18/2025
The doctor gave a through update on the thyroid. Very informative.
- Reviewed on 9/17/2025
Excellent doctor
- Reviewed on 9/13/2025
Dr. Zamfirescu has been a trusted and knowledgeable professional in the care of my Type 2 Diabetes for more that 10 years.
- Reviewed on 9/11/2025
Very professional.
- Reviewed on 9/10/2025
Dr. Zamfirescu was thorough and kind. She listened and discussed her thoughts and possibilities with me. I felt heard and understood. She spent time with me to be sure she had all the information needed.
- Reviewed on 9/10/2025
Dr. Isabelle Zamfirescu was very professional, knowledgeable, did not rushed me, very pleasant. She told me exactly what was going on. I was very grateful that she answered my questions to my satisfaction. It was a good experience.
- Reviewed on 9/10/2025
Dr. is top notch, she is extremely thorough and explains everything in a manner I can understand. Out of all my providers Dr. Z is by far the best, she's encouraging and supportive and I could not get a better provider!
- Reviewed on 9/10/2025
This was my first time seeing this Doctor Z. She was very good. [redacted]
- Reviewed on 9/8/2025
Very good
- Reviewed on 9/8/2025
Everything went well in a timely fashion.
- Reviewed on 9/7/2025
Dr. Zamfirescu is so calm, patient thorough and caring. I simply can't express enough how fortunate I feel to be in her care.
- Reviewed on 9/5/2025
Thought the team was very organized and aligned on patient care
- Reviewed on 8/27/2025
Dr. Zamfirescu is very empathetic and concerned about my health care and it is greatly appreciated! She answers message sent to her through the portal in a very timely manner, with all of the relevant, needed information. It is very refreshing to meet a care giver that truly is receptive, understanding and available!
- Reviewed on 8/27/2025
She is an excellent provider
- Reviewed on 8/25/2025
She is very professional and listen to my concerns and responded appropriately.
- Reviewed on 8/13/2025
Dr Zamfirescu carefully listens to my questions and responses. She is a thorough professional, and provides good information on how to improve my Diabetes over the short and long term. I feel very lucky to have such a consummate professional individual! LFE
- Reviewed on 8/11/2025
Appointment went smoothly.
- Reviewed on 8/6/2025
Very thorough, professional , kind and listened well
- Reviewed on 8/3/2025
Dr. Z always shares what she has to say and then asks if I have any questions. She listens carefully and gives my comments/questions consideration
- Reviewed on 8/3/2025
Office was run well. Staff was professional
- Reviewed on 7/31/2025
First visit with Dr Z. She was very attentive and a great listener. Although did not tell me when to make a follow up appointment.
- Reviewed on 7/30/2025
She took immediate action and increased my medication. Arranged by schedule to see her earlier and explained everything so I understood.
- Reviewed on 7/25/2025
Always a good experience.
- Reviewed on 7/24/2025
very professional and courteous
- Reviewed on 7/24/2025
I have been a long term patient of Dr. Z for many years. She is always on top of my situation, is exceptionally supportive, informative, and empathetic as well. I always come away from her visits better informed, more aware, and know that she is supportive. She always replies to my Gateway comments in a timely fashion and always feel better about my health knowing she is my caregiver.
- Reviewed on 7/23/2025
Dr. Zamfirescu is uniquely willing to try to help me with my medically complex case. I have seen many overwhelmed and burnt out providers over the last few years and been bounced back and forth between Primary Care and specialists without making progress. Dr. Zamfirescu was not like that. She was sympathetic and offered to do what she could to help.
- Reviewed on 7/23/2025
Dr. Z is the best helped me for many years getting my diabetes in control.
- Reviewed on 7/19/2025
The Best!
- Reviewed on 7/16/2025
Dr. Z. has been my endocrinologist for many years and she has educated me and guided me through my disease. It remains in check with my levels the best in 16 years and dropping 75 lbs. She is the best!
- Reviewed on 7/12/2025
I had a very great visit treated kindly professionally and informative at all times
- Reviewed on 7/9/2025
This provider was one of the best I have ever seen. She was very informative and answered all my questions.
- Reviewed on 7/6/2025
Dr Z. For meeting Dr. for the first time she was very caring and concerned immensely about my medical condition. She also explained things to me in layman's terms so that I could fully understand. I'm thrilled that I was referred to her. I look forward too seeing her in the future.
- Reviewed on 7/6/2025
Very kind and answered all my questions She is the best
- Reviewed on 7/5/2025
I have been seeing Dr. Z for many years. She has provided excellent care and has been instrumental for the great health I am experiencing today. I trust her advice explicitly.
- Reviewed on 7/5/2025
Dr Z is great!
- Reviewed on 7/4/2025
Doctor Z., felt very comfortable with her, she explains everything very well. Like her a lot.
- Reviewed on 7/2/2025
Dr Z takes time to explain everything and gives time for questions. She remembers what we discussed on the previous visits. Lovely woman!
- Reviewed on 6/29/2025
She is the best. This is my first visit with her and I found her so amazing. Very sweet, caring and intelligent. I'm so happy I picked her to be my doctor.
- Reviewed on 7/2/2025
Very good
- Reviewed on 7/1/2025
First of all, I trusted her. She's very knowledgeable. I've been to other endocrinologists, but I found her the easiest to talk to and the best listener and the most knowledgeable.
- Reviewed on 6/26/2025
This provider is very attentive to the patients' and provides best possible care.
- Reviewed on 6/25/2025
Dr. Zamfirescu is amazing! She is so kind and attentive to my questions and helps explain diabetes and my medications in a way I can easily understand. I wouldn't want to go anywhere else!
- Reviewed on 6/25/2025
Dr. Z listens and explains
- Reviewed on 6/25/2025
Over the past number of my interactions with Dr. Z I have always been very happy with her care
- Reviewed on 6/25/2025
I thought she was incredible. She was timely and curteous. Mild mannered and with each thing we went over she asked what I thought. She was very interested in making this a team effort. I walked out there very pleased.
- Reviewed on 6/23/2025
This provider was very efficient and courteous!
- Reviewed on 6/22/2025
Nice experience
- Reviewed on 6/21/2025
Dr. was kind and provided ample time for me to explain my concerns and reasons for changes in providers. She was knowledgeable and supportive.
- Reviewed on 6/18/2025
I could not say enough good things about this visit. Very satisfied all around.
- Reviewed on 6/18/2025
She is always helpful and listen to me.
- Reviewed on 6/15/2025
Excellent
- Reviewed on 6/15/2025
Dr Zamfirescu has taught me to be a better diabetic. I've had type 1 diabetes for 54 years. During this time I've had two endocrinologists caring for me. Dr. Zamfirescu has been treating me for 10 - 15 years and her care goes beyond what any patient expects from a doctor. During one visit years ago she immediately noticed I was having a keto acidosis upon entering the, contacted the hospital emergency room and I was immediately placed under the care of the emergency room physicians and nurses. Later that evening Dr. Zamfirescu actually came to the emergency room to follow up on me. That made such a big impression on me that I never would expect another doctor to do. She doesn't go through the motions and I truly believe she cares about all her patients! Every appointment I leave learning something new on how to care for myself and I owe it all to her!
- Reviewed on 6/14/2025
Love Dr Z!
- Reviewed on 6/14/2025
Excellent
- Reviewed on 6/11/2025
Dr. Zamfirescu and her staff are the most professional, respectful, and kind providers I have found in over 40 years. They are the single reason I stay with harbor medical. As we all know there are other options. I only wish you had more people like this group
- Reviewed on 6/8/2025
Dr. Z was extremely caring/thorough. Very professional and very much into my particular problem and reaching a specific cause for my situation!!! I have seen another endocrinologist for the past six months which was a total waste of time with that doctor. Dr. Z right out of the gate was extremely into my health and very knowledgeable and sincerely was looking out for my best health/interest. A friend of mine suggested that I be seen by her. I am so glad I took his advice.
- Reviewed on 6/7/2025
Dr. Zamfirescu is an excellent physician! She was familiar with my case and did a great job listening to me and explaining the next steps. I was so grateful for the time she took with me. I am so glad to have her working with me.
- Reviewed on 6/7/2025
She's courteous very kind and thoughtful
- Reviewed on 6/5/2025
She has been extremely helpful with my diabetes care through out the years I hope she stays with the practice a long time because I trust her ? %. She has become one of the most important providers in my life. Give her a raise and keep her happy.
- Reviewed on 6/4/2025
Dr Zamfirescu is an excellent doctor. She is kind and caring and extremely knowledgeable. I am very happy to be in her care.
- Reviewed on 6/5/2025
Nothing. I really like Dr. Z and everyone is great.
- Reviewed on 5/28/2025
She provided all the answers to my questions. I was happy with my visit
- Reviewed on 5/29/2025
Dr. Z is one of the best doctors I have ever had. She always takes the time to talk to me and answer any questions I have.
- Reviewed on 5/26/2025
Dr. Zamfirescu is very thorough with me and cares very much about the results of all my tests and goes over them with me very carefully. Thank you.
- Reviewed on 5/21/2025
Dr. Zamfirescu is an extremely caring, kind, and helpful doctor. She is extremely knowledgeable as well.
- Reviewed on 5/14/2025
She was very thorough and explained things that I could understsnd
- Reviewed on 5/7/2025
Dr Z is an excellent health care provider. I have been her patient for the last 5-6 years. Any time I've had difficulties and needed to speak with her, she or her nurse always took the time to call me with information and instruction to take care of my needs. My insurance often times decides to change what drugs they cover and often I've corresponded with Dr Z thru the portal and she's always taken the time to find another med in place of her original rx. I feel very well taken care of with her care!
- Reviewed on 5/7/2025
Very professional. Dr. Z was attentive, asked pertinent questions and explained everything well. She explained where I had the most bone loss. Dr Z advised to add additional supplements of calcium and Vitamin D I should take for bone loss and that she would follow up after new blood work in June. She scheduled an x-ray on my spine to check on any possible problems. Advised on when I should come back and advised that her office would call me to schedule.