Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Gregory J. Gunyan, DO

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1528386265

Dr. Gregory J. Gunyan, DO is a Psychiatry in Smithtown, New York. Graduated from New York College of Osteo Medicine of New York Institute of Technology in 2009, 17 years ago. Practices with South Nassau Communities Hospital, an 18-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
17
Trained at
New York College of Osteo Medicine of New York Institute of Technology
Licensed in
NY
In the registry since
2010
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

222 E Middle Country Rd Ste 111
Smithtown, NY 11787-2873
Phone: (631) 265-1622
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 267344 (NY)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1528386265
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 5, 2010
Last updated in NPPESNovember 14, 2014
Mailing address79 Middleville Rd, Northport, NY 11768-2200

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPSYCHIATRY
Medical schoolNEW YORK COLLEGE OF OSTEO MEDICINE OF NEW YORK INSTITUTE OF TECHNOLOGY
Graduated 2009 (17 years in practice)
Group practice South Nassau Communities Hospital — 18 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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