MR. GARY CHANG PMHNP
NPI 1033892286
Psychiatry & Neurology - Psychiatry in Harrison, NY
About Mr. Gary Chang Pmhnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. GARY CHANG PMHNP (NPI 1033892286) is an individual psychiatry provider in Harrison, New York, licensed in New York (404449) and active in the NPI registry since August 2023. He is enrolled in Medicare PECOS, is affiliated with St Joseph's Medical Center, and maintains a secondary practice location in Bronx.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mr. Gary Chang Pmhnp 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.
Medicare Billing Reassignments
4Medicare enrollment records show Gary Chang reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Harrison, NY 10528
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: St Joseph's Hospital Yonkers
- 233 clinicians in this Medicare group
Bronx, NY 10452
- Reassigned Medicare billing, New York enrollment
- 683 clinicians in this Medicare group
New York, NY 10028
- Reassigned Medicare billing, New York enrollment
- 35 clinicians in this Medicare group
Ann Arbor, MI 48104
- Reassigned Medicare billing, New York enrollment
- 103 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Joseph's Medical Center
Acute Care Hospitals · Yonkers, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10528 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Gary Chang's NPI number?
The NPI number for Gary Chang is 1033892286. It was assigned to this individual provider in the NPPES registry on August 14, 2023.
Where is Gary Chang located?
Gary Chang practices at 275 North St, Harrison, NY 10528. The listed phone number is (203) 576-6000.
What is Gary Chang's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Gary Chang enrolled in Medicare?
Yes. Gary Chang 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.
Which organizations bill Medicare for Gary Chang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gary Chang reassigns Medicare benefits to 4 organizations: St.Vincent' Hospital Westchester Psych (Harrison, NY), Sun River Health Inc (Bronx, NY), Integrative Wellness Nurse Practitioner In Psychiatry PLLC (New York, NY) and Aldad Medical PC (Ann Arbor, MI). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gary Chang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Gary Chang affiliated with any hospitals?
According to CMS data, Gary Chang is affiliated with St Joseph's Medical Center.
When was this NPI record last updated?
The NPPES record for Gary Chang was last updated on February 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months 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.
# Mr. Gary Chang, PMHNP · NPI 1033892286
Psychiatry physician in Harrison, New York. Individual provider, active in the CMS NPPES registry since August 14, 2023.
## Identity
- **NPI:** 1033892286 (Entity type: Individual)
- **Enumerated:** August 14, 2023
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** 404449 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 275 NORTH ST, Harrison, NY 10528-1140
- **Phone:** (203) 576-6000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): St.Vincent' Hospital Westchester Psych (NPI 1932400140, Harrison, NY); Sun River Health Inc (NPI 1740763275, Bronx, NY); Integrative Wellness Nurse Practitioner In Psychiatry PLLC (NPI 1336745058, New York, NY); Aldad Medical PC (NPI 1174784953, Ann Arbor, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** February 24, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1033892286) · Data from the CMS NPPES public registry.