DR. GREGORY J. GUNYAN D.O.
NPI 1528386265
Psychiatry & Neurology - Psychiatry in Smithtown, NY

Q: What is Gregory Gunyan's NPI number?

The NPI number for Gregory Gunyan is 1528386265. It was assigned to this individual provider in the NPPES registry on May 5, 2010.

Q: What is Gregory Gunyan's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Q: When was this NPI record last updated?

The NPPES record for Gregory Gunyan was last updated on November 14, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since May 05, 2010PECOS EnrolledAccepts Medicare Assignment

222 E MIDDLE COUNTRY RD STE 111, SMITHTOWN, NY 11787(631) 265-1622 Get Directions Write a Review

NPPES record last updated: November 14, 2014. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Dr. Gregory J. Gunyan D.o. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GREGORY J. GUNYAN D.O. (NPI 1528386265) is an individual psychiatry provider in Smithtown, New York, licensed in New York (267344) and active in the NPI registry since May 2010. He is enrolled in Medicare PECOS, is affiliated with Mount Sinai South Nassau, and is a graduate of New York College Of Osteo Medicine Of New York Institute Of Technology (2009).

NPPES Registry Identity

NPI1528386265

Entity TypeIndividualMale

Primary Taxonomy2084P0800X

Provider Legal NameDR. GREGORY J. GUNYANCredential: D.O.

Location Address222 E MIDDLE COUNTRY RD STE 111Smithtown, NY 11787-2873

Mailing Address79 Middleville RdNorthport, NY 11768-2200 · (631) 261-4400

Phone(631) 265-1622

Sole ProprietorNo

Medical School CMSNew York College Of Osteo Medicine Of New York Institute Of TechnologyGraduated 2009

Enumeration DateMay 5, 2010

Last NPPES UpdateNovember 14, 2014

✔ NPI 1528386265 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians

Taxonomy Code2084P0800X

License✔ Licensed in NY · 267344

Definition

A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

222 E MIDDLE COUNTRY RD STE 111, Smithtown, NY 11787

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Gregory J. Gunyan D.o. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6507156874

PECOS Enrollment IDI20160531000184

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

110 services65 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

55 services38 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

31 services20 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Mount Sinai South Nassau

Acute Care Hospitals · Oceanside, NY

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330198

LocationOne Healthy WayOceanside, NY 11572 · Nassau County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11787 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$203.53 typical visit price

range $67.40 – $203.53

Typical copayment $50.88 (range $16.85 – $50.88)

Most-billed visit code 99205

Established Patient

$83.44 typical visit price

range $21.66 – $164.45

Typical copayment $20.86 (range $5.41 – $41.11)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gregory Gunyan's NPI number?

The NPI number for Gregory Gunyan is 1528386265. It was assigned to this individual provider in the NPPES registry on May 5, 2010.

Where is Gregory Gunyan located?

Gregory Gunyan practices at 222 E Middle Country Rd Ste 111, Smithtown, NY 11787. The listed phone number is (631) 265-1622.

What is Gregory Gunyan's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Gregory Gunyan enrolled in Medicare?

Yes. Gregory Gunyan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Gregory Gunyan affiliated with any hospitals?

According to CMS data, Gregory Gunyan is affiliated with Mount Sinai South Nassau.

When was this NPI record last updated?

The NPPES record for Gregory Gunyan was last updated on November 14, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.