| Monday | 9:00 AM - 5:00 PM |
|---|---|
| Tuesday | 9:00 AM - 5:00 PM |
| Wednesday | 9:00 AM - 5:00 PM |
| Thursday | 9:00 AM - 5:00 PM |
| Friday | 8:00 AM - 4:00 PM |
| Saturday | Closed |
| Sunday | Closed |
Martin Greenfield, MD
Specialty
Endocrinology Diabetes & Metabolism
Languages
English
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Seeing patients at
Patient Reviews
Patient review summary
Learn about our survey5
4
3
2
1
4.8
44 reviews
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- 5.0 Reviewed on May 26, 2026
- Verified Review
He is extremely knowledgable & caring. Dr. Greenfield did not rush and listened carefully.
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- 5.0 Reviewed on May 22, 2026
- Verified Review
Dr Greenfield is just great. I feel very comfortable when I am in for a check up.
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- 5.0 Reviewed on May 11, 2026
- Verified Review
He’s a great doctor, I highly recommend him.
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- 5.0 Reviewed on May 8, 2026
- Verified Review
exc Dr
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- 3.5 Reviewed on May 5, 2026
- Verified Review
He seemed knowledgeable , til I get the biopsy done I will then give a tating
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- 5.0 Reviewed on May 5, 2026
- Verified Review
Dr. Greenfield is very caring about my needs. I just recommended someone recently
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- 5.0 Reviewed on May 3, 2026
- Verified Review
I find him to be caring, compassionate, knowledgeable about my endocrine systems, smart about medications, and genuinely interested in my well being.
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- 5.0 Reviewed on Apr 27, 2026
- Verified Review
The care I received
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- 5.0 Reviewed on Apr 15, 2026
- Verified Review
Dr. Greenfield is excellent and very knowledgeable. So kind
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- 2.5 Reviewed on Mar 20, 2026
- Verified Review
The follow up after appointment regarding test results is difficult to get.
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- 5.0 Reviewed on Mar 14, 2026
- Verified Review
Dr. Greenfield has been my endocrinologist for about 30 years. I think that speaks for itself. He is caring, listens, courteous and has given me excellent medical care.
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- 4.5 Reviewed on Mar 7, 2026
- Verified Review
He listens to you and checks on your areas of concern
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- 5.0 Reviewed on Mar 6, 2026
- Verified Review
have been seeing him for over 15 years. very comfortable with him and trust him that he is doing the right thing for me
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- 5.0 Reviewed on Mar 3, 2026
- Verified Review
Warm compassionate and not in rush.
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- 4.5 Reviewed on Mar 3, 2026
- Verified Review
Dr. Greenfield is a very very experienced physician who sees the patient as a whole, and not just the particular organs he specializes in. I have been his patient for over 30 years.
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- 5.0 Reviewed on Feb 26, 2026
- Verified Review
Very professional
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- 5.0 Reviewed on Feb 20, 2026
- Verified Review
Dr Greenfield is the best compassionate patient physician
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- 5.0 Reviewed on Feb 20, 2026
- Verified Review
He's very caring, compassionate, and is a straight shooter.
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- 5.0 Reviewed on Feb 12, 2026
- Verified Review
He is very professional and has a caring bedside manner He knows you abd follows upon anyb issues.
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- 5.0 Reviewed on Feb 6, 2026
- Verified Review
Dr. Greenfield is an excellent doctor. He shows great concern for my condition, orders tests whenever necessary, promptly follows up with me regarding the results, and clearly explains the next steps to be taken.
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About Martin Greenfield, MD
Dr. Martin Greenfield is board certified in internal medicine and endocrinology. He manages a wide range of endocrine conditions with a strong focus on diabetes care and leadership in organized medicine.Philosophy of care
Dr. Greenfield partners with patients through education and long-term disease management.Gender
Male
Board certifications
American Board of Internal Medicine
Licenses
NY, 103688
Employed or contracted
Employed
Network Name
ProHealth
NPI
1205831443
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Insurance Accepted
This list is for informational purposes only and may not reflect the most current plans accepted by the provider. Optum accepts most major health insurance plans. Please contact your insurance company to confirm your coverage, eligibility, and the provider's participation in your plan.
- 1199
- Aetna
- Affinity
- Anthem BCBS
- CHN
- Centivo
- Cigna
- Coventry
- EmblemHealth
- First Health
- Humana
- MagnaCare
- Medicaid
- Medicare
- MultiPlan
- NYSHIP
- Northwell Direct
- Oscar
- Oxford
- TRICARE
- UHC
- UMR
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Medical School
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State University Of New York College Of Medicine
Residency
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Long Island Jewish Medical Center
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The contact information listed will direct you to a licensed representative that works with Medicare enrollees to explain Medicare Advantage and Prescription Drug Plan options. There may not be plans available in your area. Any information provided is limited to those plans offered in your area.
*The contact information listed will direct you to a licensed representative that works with Medicare enrollees to explain Medicare Advantage and Prescription Drug Plan options. There may not be plans available in your area. Any information provided is limited to those plans offered in your area. Please contact Medicare.gov or 1-800-MEDICARE to get information on all of your options.
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