
Highlights
Age Groups Seen
- Pediatrics
- Teenagers
- Adults
- Geriatrics
Languages
- English
Gender
FemaleLocations
- Nantucket Cottage Family Medicine Clinic
- 57 Prospect Street, Nantucket, MA 02554
- Get Directions
- phone: 508-825-1000
- fax: 508-825-8272
Expertise
Education
- Fellowship: Christus Jasper Memorial Hospital, Rural Health/Maternity Care, 1999
- Internship: St. Francis Hospital and Medical Center, Family Medicine, 1998
- Residency: St. Francis Hospital and Medical Center, Family Medicine, 1998
- Medical Education: St. George's University School of Medicine, 1995
Board Certifications
- Family Medicine: American Board of Family Medicine, 1998
Insurance
- Aetna
- Blue Cross Blue Shield
- Cigna
- Harvard Pilgrim Health Care
- Mass General Brigham Health Plan
- MassHealth
- MassHealth ACO
- Medicare
- Medicare ACO
- TriCare
- Tufts Health Plan
- United Health Care
Ratings & Reviews
4.9 out of 5
88 ratings, 31 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 2/9/2026
Dr. Koehm always gives us a lot of her time and makes us feel like we're listened to and like our concerns are validated and she's just a good listener and spends a lot of time. Sometimes we do have to wait to see her, but I get it. They're just busy. But once we do get to see her, she spends a lot of time and gives us great care for our whole family, all three of our boys. So we're very grateful to her. We just had a recent hospitalization for the little one and she came down and visited us as well. So she genuinely cares and we feel that. Thank you.
- Reviewed on 2/8/2026
nice people
- Reviewed on 2/7/2026
Always a positive, compassionate encounter. Dr Koehm listens to my concerns and offers knowledgeable thoughtful advice and recommendations.
- Reviewed on 1/29/2026
She is very good and she is on top of everything!
- Reviewed on 1/21/2026
Dr. Koehm is absolutely the best! She is gentle, kind, and patient focused. She spent quality time talking to both my son and I about his care.
- Reviewed on 1/12/2026
Dr. Koehm is one of a kind. Nantucket is lucky to have her. Always professional and patient.
- Reviewed on 1/5/2026
So thorough. So kind and caring.
- Reviewed on 1/3/2026
Very efficient and empathetic
- Reviewed on 12/11/2025
I have complete confidence in Dr. Koehm!
- Reviewed on 12/11/2025
Doctor Margaret Koehm knows me well and we were able to talk frankly about certain issues that are specifically male problems.
- Reviewed on 12/8/2025
The doctor was exceptional and made me feel very comfortable and informed during the procedure which I was initially very nervous for. She was absolutely wonderful
- Reviewed on 11/24/2025
The doctor was a very kind person and I loved how she worked.
- Reviewed on 11/13/2025
My visit with my health provider is always good.
- Reviewed on 11/5/2025
Pleasant, efficient, considerate.
- Reviewed on 11/1/2025
Dr Koehm is excellent. [redacted]
- Reviewed on 11/3/2025
Dr. Koehm is an excellent doctor for me. She has been my primary care physician for many years, and I wouldn't change her for anything in the world.
- Reviewed on 11/1/2025
Very good
- Reviewed on 10/17/2025
Dr. Koehm is awesome. She is perhaps the best provider I've ever had. So I would recommend her to family, friends, or anyone I come in contact with. She's very professional and she's very thorough.
- Reviewed on 10/15/2025
The Doctor and here team were kind, caring and professional. They took the time listen to my concerns and schedule appointments with other doctors and schedule lab work as appropriate!!
- Reviewed on 10/6/2025
Dr Koehm is an excellent Dr she has been my primary care physician for over 10 years. I think she is great and I am very comfortable asking her anything.
- Reviewed on 9/23/2025
Knowledgable, professional, and caring doctor. My experience was 100% positive.
- Reviewed on 9/22/2025
Everyone was great.
- Reviewed on 9/3/2025
Dr. Koehm, was extremely professional, thoughtful and thorough throughout my visit. She took the time to listen carefully to my concerns and provided clear explanations. Her compassionate approach made me feel confident in the care I received.
- Reviewed on 9/1/2025
It's such a gift to have Dr. Koehm on Nantucket. She's so thorough, explaining things, asking questions, conversations. She takes her time. She assigns the appropriate tests, but not overdoing it ever. [redacted] So I'm very pleased with her treatment.
- Reviewed on 8/12/2025
A great experience with zero complaints. Dr. Koehm is the best!
- Reviewed on 7/21/2025
A great experience. She is a wonderful doctor. Very knowledgeable and compassionate
- Reviewed on 7/19/2025
I would like to see her once a year.
- Reviewed on 7/7/2025
Dr. Koehm listens, cares and answers questions, she is simply wonderful.
- Reviewed on 6/23/2025
Provider was very professional and kept me informed and at ease during my procedure.
- Reviewed on 5/26/2025
Always the best
- Reviewed on 5/12/2025
Always wonderful