| 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 | 8:30 AM - 5:00 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
4.9
55 reviews
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- 5.0 Reviewed on Jun 30, 2026
- Verified Review
Greta doctor. He made it easy to understand what was going on.
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- 5.0 Reviewed on Jun 26, 2026
- Verified Review
He is welcoming,thorough, respectful, answers questions and provides needed information; kind and approachable; has managed my care for many years;
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- 5.0 Reviewed on Jun 25, 2026
- Verified Review
Very caring and thorough
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- 5.0 Reviewed on Jun 24, 2026
- Verified Review
My husband and I both use Dr. Greenfield. I feel he is a Very good and caring Dr.
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- 5.0 Reviewed on Jun 19, 2026
- Verified Review
He’s very knowledgeable and always goes over things with detail.
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- 5.0 Reviewed on Jun 19, 2026
- Verified Review
Martin Greenfield is an outstanding endocrinologist. He is up with the latest developments in diabetes care.
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- 5.0 Reviewed on Jun 16, 2026
- Verified Review
He is very knowledgeable and explains any questions. He is respectful and a very pleasant doctor Great bedside manner
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- 5.0 Reviewed on Jun 14, 2026
- Verified Review
Level of professionalism
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- 5.0 Reviewed on Jun 6, 2026
- Verified Review
Dr. Greenfield has been my doctor for over 35 years and has always provided excellent healthcare.
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- 5.0 Reviewed on Jun 5, 2026
- Verified Review
Dr. Greenfield is a kind, caring and knowledgeable physician. I value his opinion, always.
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- 5.0 Reviewed on Jun 3, 2026
- Verified Review
Fantastic Doctor
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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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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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Education
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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