NASSAU PSYCHIATRIC SERVICES, P.C.
NPI 1104273762
Counselor - Mental Health in Uniondale, NY
About Nassau Psychiatric Services, P.c. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NASSAU PSYCHIATRIC SERVICES, P.C. (NPI 1104273762) is a healthcare organization registered as a mental health in Uniondale, New York and active in the NPI registry since May 2016. The organization maintains a secondary practice location in Garden City and lists Martha Alzamora Hyzak, Director, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Nassau Psychiatric Services, P.c. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
6Medicare enrollment records show 6 clinicians reassign Medicare billing to Nassau Psychiatric Services, P.C., which bills Medicare for the services they deliver. Of these, 4 practice within 10 miles. They are listed nearest first.
Clinicians, nearest first (6)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Nassau Psychiatric Services, P.C.'s NPI number?
The NPI number for Nassau Psychiatric Services, P.C. is 1104273762. It was assigned to this organization in the NPPES registry on May 24, 2016.
Where is Nassau Psychiatric Services, P.C. located?
Nassau Psychiatric Services, P.C. is located at 626 Rxr Plz Ste 655, Uniondale, NY 11556. The listed phone number is (516) 280-9030.
What is Nassau Psychiatric Services, P.C.'s specialty?
The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.
Is Nassau Psychiatric Services, P.C. enrolled in Medicare?
Yes. Nassau Psychiatric Services, P.C. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Nassau Psychiatric Services, P.C.?
According to the CMS Revalidation Reassignment List (October 2026 release), 6 clinicians in 4 Medicare specialties reassign their Medicare billing to Nassau Psychiatric Services, P.C.. A 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 the clinician's services. The largest specialties are Psychiatry (3), Clinical Psychologist (1) and Clinical Social Worker (1). Of these, 4 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Nassau Psychiatric Services, P.C. was last updated on September 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Nassau Psychiatric Services, P.c. · NPI 1104273762
Mental Health organization in Uniondale, New York. Organization record, active in the CMS NPPES registry since May 24, 2016.
## Identity
- **NPI:** 1104273762 (Entity type: Organization)
- **Enumerated:** May 24, 2016
- **Primary specialty:** Counselor - Mental Health · taxonomy 101YM0800X
- **Organization subpart:** No
- **Authorized official:** Martha Hyzak, DIRECTOR
## Practice location
- **Address:** 626 RXR PLZ STE 655, Uniondale, NY 11556-3829
- **Phone:** (516) 280-9030 · **Fax:** (516) 280-9029
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 6 clinicians in 4 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Psychiatry (3), Clinical Psychologist (1), Clinical Social Worker (1); 4 practice within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 21, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1104273762) · Data from the CMS NPPES public registry.