| 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
Seeing patients at
Patient Reviews
Patient review summary
Learn about our survey5
4
3
2
1
4.8
35 reviews
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Mar 20, 2026Verified Review
The follow up after appointment regarding test results is difficult to get.
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Mar 14, 2026Verified 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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Mar 7, 2026Verified Review
He listens to you and checks on your areas of concern
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Mar 6, 2026Verified 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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Mar 3, 2026Verified Review
Warm compassionate and not in rush.
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Mar 3, 2026Verified 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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Feb 26, 2026Verified Review
Very professional
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Feb 20, 2026Verified Review
Dr Greenfield is the best compassionate patient physician
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Feb 20, 2026Verified Review
He's very caring, compassionate, and is a straight shooter.
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Feb 12, 2026Verified Review
He is very professional and has a caring bedside manner He knows you abd follows upon anyb issues.
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Feb 6, 2026Verified 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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Jan 26, 2026Verified Review
He seems very knowledgeable about my medical condition and provides advice about any issues I may have.
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Jan 25, 2026Verified Review
He’s very professional
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Jan 22, 2026Verified Review
He is thorough, efficient, knowledgeable, friendly, and genuinely concerned about your health.
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Jan 17, 2026Verified Review
i've been his patient for more than 30 years. He is TERRIFIC - knowledgeable, expert and caring
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Jan 15, 2026Verified Review
Dr. Greenfield is an excellent diagnostician and understands my medical and personal needs.
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Jan 6, 2026Verified Review
Dr. Greenfield is an excellent, caring, compassionate doctor.
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Jan 6, 2026Verified Review
I have been under Dr. Greenfiel‘s care for many years and I am very satisfied. He is very efficient in the clinic and very efficient in returning messages.
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Jan 5, 2026Verified Review
I know he will be retiring soon
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Jan 5, 2026Verified Review
Dr. Greenfield is not only knowledgeable, he is also courteous, caring and compassionate. He gives me personal attention.
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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 may not reflect all insurance accepted by the provider and is for informational purposes only.
- 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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