NPPES file of Aug 9, 2026

Gary Chang, PMHNP

Psychiatry Physician · Harrison, NY

Gary Chang, PMHNP is a psychiatry physician with a practice address in Harrison, New York, and NPI 1033892286, issued on Aug 14, 2023. Check the license (New York 404449, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1033892286
Name
Gary Chang
Credential
PMHNP
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
404449 NY
Self-reported in NPPES; status is on the state search
Practice location
275 North St, Harrison, NY 10528
Phone
(203) 576-6000
Enumerated
Aug 14, 2023
Record last updated
Feb 24, 2026
Medicare enrollment
Enrolled (PECOS I20240131003779); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

8 nearest psychiatry physician records → All 6,589 in New York → Look up another NPI →

Also registered at 275 North St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Evelyn Aguilar, LMHCMental Health Counselor1427796184
  2. Maria Victoria AlasRegistered Nurse1013458850
  3. Lidia AlmanzarCase Manager/Care Coordinator1972076834
  4. Christopher Aloezos, MDPsychiatry Physician1083956254
  5. Luis AntonioCase Manager/Care Coordinator1790219376
  6. Darleen Arias, MHC-LPMental Health Counselor1265291397

Verify Gary Chang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
    Search for license 404449    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the New York license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

24% more Medicare Part D claims than the average psychiatry physician in 2024

1,238 Medicare Part D claims for 145 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.

  1. Gary Chang1,238
  2. Specialty average1,000

Most prescribed

  1. Quetiapine Fumarate93 claims
  2. Sertraline Hcl79 claims
  3. Trazodone Hcl70 claims
  4. Zolpidem Tartrate62 claims
  5. Aripiprazole56 claims
  6. Benztropine Mesylate52 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $539.79

30 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,693 providers of this specialty with any payment received $4,954.93 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Gary Chang$539.79
  2. Specialty average$4,954.93

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Sun River Health Inc.Peekskill, NY

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Gary Chang among 6,589 psychiatry physician records in New York

Gary Chang, PMHNP is one of 6,589 psychiatry physician records with a practice address in New York. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 99% of them.

  • NPI issued2023 · 99% of these records are older, under 1% newer
  • In a Medicare fileYes · 72% of these records are
  • In the CMS Doctors and Clinicians fileYes · 39% of these records are
  • Graduated2022 · median 2002 among the 2,559 with a school on file
  • Record last updated2026 · 65% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

26 psychiatry physician records list a practice address in Harrison

They are 26 of the 713 NPPES records with a practice address in Harrison, and 6,589 psychiatry physician records in New York.

All 6,589 in New York → Every provider in Harrison → Psychiatry Physician nationwide →

The 8 psychiatry physician records with the nearest ZIP codes

  1. Arthur Badikian, MDHarrison, NY 105281134255946
  2. Karen Gennaro, MDHarrison, NY 105281255472973
  3. Eric Grabstein, MDHarrison, NY 105281982713715
  4. Dean Harlam, M.D.Harrison, NY 105281841339298
  5. Lynne Hoffman, MDHarrison, NY 105281538261003
  6. Balkrishna Kalayam, MDHarrison, NY 105281588751663
  7. Irina Martynova, M.D.Harrison, NY 105281174558787
  8. Robert Olko, M.D.Harrison, NY 105281528125291

Common questions

What is Gary Chang, PMHNP's NPI number?

Gary Chang, PMHNP's National Provider Identifier (NPI) is 1033892286, issued on Aug 14, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Gary Chang, PMHNP located?

The NPPES record lists a practice address at 275 North St, Harrison, NY, 10528. Phone: (203) 576-6000. Providers update this record themselves, so call before visiting.

How can I verify Gary Chang, PMHNP's license?

NPPES lists New York license number 404449, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Gary Chang, PMHNP prescribe under Medicare Part D?

In 2024, Gary Chang, PMHNP had 1,238 Medicare Part D claims for 145 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.