GARY J. HORWITZ M.D.
NPI 1598753063
Psychiatry & Neurology - Psychiatry in Pittsford, NY
About Gary J. Horwitz M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GARY J. HORWITZ M.D. (NPI 1598753063) is an individual psychiatry provider in Pittsford, New York, licensed in New York (134963) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS and is a graduate of University Of Rochester School Of Medicine And Dentistry (1977).
NPPES Registry Identity
Specialties & Licenses
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
Gary J. Horwitz M.d. 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
3Medicare enrollment records show Gary Horwitz reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Rochester, NY 14620
- Reassigned Medicare billing, New York enrollment
- 9 clinicians in this Medicare group
Rochester, NY 14620
- Reassigned Medicare billing, New York enrollment
- 1,624 clinicians in this Medicare group
Rochester, NY 14642
- Reassigned Medicare billing, New York enrollment
- 191 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.
Areas of Expertise CMS Part B claims
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 14534 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 6
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PITTSFORD, NY 14534
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 Horwitz's NPI number?
The NPI number for Gary Horwitz is 1598753063. It was assigned to this individual provider in the NPPES registry on October 10, 2005.
Where is Gary Horwitz located?
Gary Horwitz practices at 179 Sullys Trl Ste 200, Pittsford, NY 14534. The listed phone number is (585) 275-7301.
What is Gary Horwitz's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Gary Horwitz enrolled in Medicare?
Yes. Gary Horwitz 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 Horwitz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gary Horwitz reassigns Medicare benefits to 3 organizations: St Johns Health Care Corporation (Rochester, NY), University Of Rochester (Rochester, NY) and University Of Rochester Department Of Psychiatry Clinical Group (Rochester, NY). 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 Horwitz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Gary Horwitz was last updated on November 5, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Gary J. Horwitz, M.D. · NPI 1598753063
Psychiatry physician in Pittsford, New York. Individual provider, active in the CMS NPPES registry since October 10, 2005.
## Identity
- **NPI:** 1598753063 (Entity type: Individual)
- **Enumerated:** October 10, 2005
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** 134963 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 179 SULLYS TRL STE 200, Pittsford, NY 14534-4500
- **Phone:** (585) 275-7301
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): St Johns Health Care Corporation (NPI 1164425971, Rochester, NY); University Of Rochester (NPI 1982787537, Rochester, NY); University Of Rochester Department Of Psychiatry Clinical Group (NPI 1326088808, Rochester, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Rochester School Of Medicine And Dentistry, class of 1977
## Record status
- **NPPES last updated:** November 5, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1598753063) · Data from the CMS NPPES public registry.