DR. WILLIAM NANA OSEI PHD
NPI 1992322960
Psychologist in Brooklyn, NY
About Dr. William Nana Osei Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM NANA OSEI PHD (NPI 1992322960) is an individual psychologist in Brooklyn, New York, licensed in New York (024706) and active in the NPI registry since June 2020. He is enrolled in Medicare PECOS and is a graduate of Other (2020).
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 (PECOS)
Dr. William Nana Osei Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show William Osei reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Miami, FL 33130
- Reassigned Medicare billing, New York and Pennsylvania enrollments
- 867 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.
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.
BROOKLYN, NY 11242
BROOKLYN, NY 11242
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 William Osei's NPI number?
The NPI number for William Osei is 1992322960. It was assigned to this individual provider in the NPPES registry on June 25, 2020.
Where is William Osei located?
William Osei practices at 26 Court St Ste 409, Brooklyn, NY 11242. The listed phone number is (347) 695-8715.
What is William Osei's specialty?
The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.
Is William Osei enrolled in Medicare?
Yes. William Osei is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for William Osei's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Osei reassigns Medicare benefits to Grow Healthcare Group PA (Miami, FL). The 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 William Osei'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 William Osei was last updated on December 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.