Dr. Mark Singer, DO is an Internist in Greenlawn, NY and has 29 years experience. They graduated from New York Institute of Technology College of Osteopathic Medicine in 1995 and completed a residency at Chief Resident North Shore University Hospital.They currently practice at Practice and are affiliated with Huntington Hospital and Stony Brook Eastern Long Island Hospital. At present, Dr. Singer received an average rating of 4.9/5 from patients and has been reviewed 89 times. Their office is not accepting new patients. Dr. Singer is board certified in Internal Medicine and accepts multiple insurance plans.

Offers Telehealth

This provider offers telehealth appointments. Call the office to schedule.

Explains Conditions Well

Patients said this doctor explains conditions well.

Trustworthy

Patients said this doctor is trustworthy.

Friendly Staff

Patients said the staff was friendly.

Easy Scheduling

Patients said scheduling was easy.

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Insurance Accepted

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Aetna HMO

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Locations

Mount Sinai Doctors Laboratory
5 Cuba Hill Rd, Greenlawn, NY 11740
Directions (631) 628-5000
See open hours

Monday

08:00 - 16:00

Tuesday

Closed

Wednesday

08:00 - 16:00

Thursday

09:00 - 17:00

Friday

Closed

Saturday

Closed

Sunday

Closed

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Patient Satisfaction

Likelihood to recommend Dr. Singer

4.9

Based on 89 Reviews

5 Stars (85)

4 Stars (3)

3 Stars (0)

2 Stars (1)

1 Star (0)

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Patient Reviews

Nov 26, 2022

My husband came down with Covid and Dr Singer was on call. He suggested my husband get an anti viral infusion at a hospital. He was sicker than we realized and he was admitted to the hospital for almost a week. If it wasn't for that suggestion my husband could have died. I thanked him via a non urgent message on the portal at 11 pm. He answered within a half hour with a kind message! Now that's a doctor!

— Nov 26, 2022

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(631) 628-5000

About Me

Specialties*

Internal Medicine

*Sharecare does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

Education

Medical Education

New York Institute of Technology College of Osteopathic Medicine
1995

Board Certifications

Internal Medicine

Internship

Memorial Sloan Kettering/north Shore University Hospital
1997

Residency

Residency Hospital

Chief Resident North Shore University Hospital
2000

Common Questions and Answers

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Frequently Asked Questions

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What is the best way to schedule an appointment with Dr. Mark Singer, DO?

Find contact information here to make an appointment.

Does Dr. Mark Singer, DO accept any insurance plans?

A list of accepted insurance providers is available on the Sharecare insurance check. It is always a good idea to verify your insurance when making an appointment.

Does Dr. Mark Singer, DO accept new patients?

New patients are generally accepted by Dr. Mark Singer, DO. To arrange an appointment, call the number on Dr. Singer's profile.

What are Dr. Singer's top areas of expertise?

Dr. Singer in specializes in Internal Medicine. See more on Sharecare.

What is Dr. Singer's office address?

Dr. Singer's office is located at 5 Cuba Hill Rd Greenlawn, NY 11740. You can find other locations and directions on Sharecare.

Is Dr. Mark Singer, DO able to provide telehealth services?

Dr. Singer provides telehealth services. Please contact the office to determine whether you are eligible.

Is Dr. Mark Singer, DO affiliated with any hospitals?

Dr. Mark Singer, DO is affiliated with Huntington Hospital and Stony Brook Eastern Long Island Hospital.

Is Dr. Mark Singer, DO a board-certified professional?

Yes, Dr. Mark Singer, DO holds board certification in Internal Medicine.

Does Dr. Mark Singer, DO receive good ratings from patients?

Dr. Mark Singer, DO has a star rating of 4.9/5. See more patient feedback on Sharecare.

Hospital Affiliations

Huntington Hospital
270 Park Ave, Huntington, NY
Stony Brook Eastern Long Island Hospital
201 Manor Pl, Greenport, NY

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Dr. Mark Singer, DO

Dr. Mark Singer, DO

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About Me

Education

Board Certifications

Internship

Residency

Frequently Asked Questions

Hospital Affiliations