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Dr. Martin Greenfield, MD

Dr. Martin Greenfield, MD

Endocrinologist
2 Prohealth Plz, Ste 201, Lake Success, NY
4.93
“Thank you to Zocdoc I was able to to make this appointment for all the endocrinologists in my area where completely booked for months on out and I was able to find DR Greenfield and be seen and I would recommend using the app to find Dr’s very helpful ”
Alexander A.February 18, 2026
Highly recommended
95% of patients gave this doctor 5 stars
Excellent wait time
100% of patients waited less than 30 minutes
New patient appointments
Appointments available for new patients on Zocdoc

Book an appointment for free

The office partners with Zocdoc to schedule appointments

Scheduling details

  1. See if they are in network

What patients are saying

Overall rating

4.93

Average wait time

4.91

Bedside manner

5.00
“Thank you to Zocdoc I was able to to make this appointment for all the endocrinologists in my area where completely booked for months on out and I was able to find DR Greenfield and be seen and I would recommend using the app to find Dr’s very helpful ”
Alexander A.February 18, 2026
“The doctor took the time to listen attentively and thoroughly reviewed my test results. He were highly informative, demonstrated exceptional patience, and addressed all of my concerns with care and professionalism.”
Youssry Y.July 30, 2025

About Dr. Martin Greenfield

Martin Greenfield, MD, is board certified in internal medicine and endocrinology and metabolism. He earned his Doctor of Medicine degree from the State University of New York and completed his fellowship at Long Island Jewish Medical Center. Dr. Greenfield currently serves on the governing council of the New York State Medical Society as well as on the legislative committee of the American College of Endocrinology. In the past, he was also president of a couple of local medical groups. Dr. Greenfield manages all types of endocrine problems with a strong emphasis on patients who suffer from diabetes, both type 1 and type 2.

Is this doctor in your insurance network?

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In-network insurances

99% of patients have successfully booked with these insurances
Aetna
BlueCross BlueShield
Cigna
Emblem Health
UnitedHealthcare
UnitedHealthcare Oxford
200+ more in-network plans

Areas of expertise

This doctor's experience enhances their expertise in similar cases. Below are the conditions or surgeries they treat most frequently.
Underactive thyroid
High cholesterol
Diabetic emergency
Enlarged thyroid
Problems with testicular function
Chronic diabetes
Underactive thyroid
High cholesterol
Diabetic emergency
Enlarged thyroid

Office location

Optum Medical Care P.C. - 2 Prohealth Plaza, Ste 201
2 Prohealth Plz, Ste 201, Lake Success, NY 11042
Get directions

Education and background

Practice names

Board certifications

  • American Board of Internal Medicine
  • Endocrinology, Diabetes & Metabolism (American Board of Internal Medicine)

Education and training

  • Medical School - State University of New York, Doctor of Medicine
  • Long Island Jewish Medical Center (Fellowship)

Professional memberships

  • Medical Society of The State of New York
  • American Association of Clinical Endocrinology

Languages spoken

  • English

Provider's gender

Male

NPI number

1205831443

Patient reviews

All reviews have been submitted by patients after interacting with the practice.
Overall rating
4.93
Wait time
4.91
Bedside manner
5.00
Trust Banner Shield
Your trust is our top concern, so providers can't pay to alter or remove reviews. We also don't publish reviews that contain any private patient health information. Learn more here
55 reviews
Most relevant
Dr listens to me and answers all my questions without rushing.|Explains everything and is caring.
My experience was great. Dr. Martin really seemed to care about fixing my thyroid issue.
Verified patient
I have been treated by Dr Greenfield for almost 30 years and am very satisfied
Patient, kind and intelligent. Great first impression.
Verified patient
Thank you to Zocdoc I was able to to make this appointment for all the endocrinologists in my area where completely booked for months on out and I was able to find DR Greenfield and be seen and I would recommend using the app to find Dr’s very helpful
Verified patient
EXCELLENT !!!
Very professional and friendly
Verified patient
The doctor took the time to listen attentively and thoroughly reviewed my test results. He were highly informative, demonstrated exceptional patience, and addressed all of my concerns with care and professionalism.
Verified patient
Verified patient
Verified patient
Verified patient
Verified patient
Verified patient
Frequently asked questions

How soon can I make an appointment with Dr. Martin Greenfield?

Generally, Dr. Martin Greenfield has appointments available on Zocdoc within 1 week. You can see Dr. Greenfield's earliest availability on Zocdoc and make an appointment online.

Is Dr. Martin Greenfield accepting new patients?

Dr. Martin Greenfield generally accepts new patients on Zocdoc. You can see Dr. Greenfield's earliest availability on Zocdoc and schedule an appointment online.

Does Dr. Martin Greenfield accept my insurance?

Choose your insurance plan to verify if Dr. Greenfield is in-network.

Can I make an appointment with Dr. Martin Greenfield online?

Yes, you can make an appointment online with Dr. Greenfield using Zocdoc. It’s simple, secure, and free.

What practice does Dr. Martin Greenfield work with?

Where is Dr. Martin Greenfield's office located?

Dr. Martin Greenfield's office is located at 2 Prohealth Plz, Lake Success, NY 11042.

Which board certifications does Dr. Martin Greenfield have?

Dr. Martin Greenfield is certified by American Board of Internal Medicine and Endocrinology, Diabetes & Metabolism (American Board of Internal Medicine).

What are common reasons for patients to see Dr. Martin Greenfield?

Dr. Martin Greenfield frequently sees patients for Endocrinology Consultation, Erectile Dysfunction / Impotence / Male Sexual Dysfunction, Polycystic Ovary Syndrome / Metabolic Syndrome, Thyroid Evaluation, and Type 2 Diabetes. You can see other visit reasons for Dr. Martin Greenfield on their profile.

What languages does Dr. Martin Greenfield speak?

Dr. Martin Greenfield speaks English.

How do patients rate Dr. Martin Greenfield in reviews?

55 patients have reviewed Dr. Martin Greenfield. The overall rating for this doctor is 4.93/5. They have a 5/5 rating for bedside manner and a 4.91/5 rating for wait time. You can read individual reviews and ratings on their profile.

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Zocdoc›New Hyde Park, NY Endocrinologists›Dr. Martin Greenfield, MD