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Dr. Gregory J. Gunyan is a psychiatrist in Oceanside, New York, practicing with South Nassau Communities Hospital.

Medical school: New York College of Osteopathic Medicine of New York Institute of Technology, class of 2009. The DO after his name stands for Doctor of Osteopathic Medicine — a fully licensed physician, trained with an extra emphasis on the musculoskeletal system.

The office is at 1 Healthy Way, Oceanside, NY 11572; the phone number on record is (516) 255-1600. Dr. Gunyan is also listed at 2277 Grand Ave, Baldwin, NY 11510. The group behind the practice, South Nassau Communities Hospital, lists 18 clinicians with Medicare. Dr. Gunyan accepts Medicare assignment, which means he takes the Medicare-approved amount as full payment for covered services. Video (telehealth) appointments are listed as an option.

On the hospital side, Dr. Gunyan holds an affiliation with Mount Sinai South Nassau.

Practice details

Specialty
Psychiatrist
Credentials
DO
Practice
South Nassau Communities Hospital
Address
1 Healthy Way, Oceanside, NY 11572
Phone
(516) 255-1600
Other locations
2277 Grand Ave, Baldwin, NY 11510
Medical school
New York College of Osteopathic Medicine of New York Institute of Technology (2009)
Hospital affiliations
Mount Sinai South Nassau
Medicare assignment
Accepts
Telehealth
Available
NPI number
1528386265
NY license no.
267344

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Medicare, Medicaid and hospitals

Medicare patients (2024)
92 people with traditional Medicare, average age 65
New York Medicaid
Enrolled fee-for-service provider since 2016. Medicaid managed-care plans keep their own networks, so check with your plan.
Hospital pages
Mount Sinai South Nassau

Medicare figures cover people with traditional (fee-for-service) Medicare only; services billed for fewer than 11 patients are not published.

Comparing psychiatrists? See 11 in Oceanside or 165 across Long Island.

Other psychiatrists in Oceanside

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Frequently Asked Questions

With South Nassau Communities Hospital, at 1 Healthy Way, Oceanside, NY 11572.

Call the office at (516) 255-1600.

Yes — Dr. Gunyan accepts Medicare assignment, taking the Medicare-approved amount as full payment for covered services.

Mount Sinai South Nassau.

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