DR. WILLIAM NANA OSEI PHD
NPI 1992322960
Psychologist in Brooklyn, NY

Active since June 25, 2020PECOS Enrolled
26 COURT ST STE 409, BROOKLYN, NY 11242(347) 695-8715 Get Directions Write a Review

NPPES record last updated: December 2, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Dec 2, 2025, Dec 6, 2023, Jun 25, 2020 (3 updates tracked since 2020).

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

NPI1992322960
Entity TypeIndividualMale
Primary Taxonomy103T00000X
Provider Legal NameDR. WILLIAM NANA OSEICredential: PHD
Location Address26 COURT ST STE 409Brooklyn, NY 11242-1134
Mailing Address26 Court St Ste 409Brooklyn, NY 11242-1134 · (347) 695-8715
Sole ProprietorNo
Medical School CMSOtherGraduated 2020
Enumeration DateJune 25, 2020
Last NPPES UpdateDecember 2, 20253 updates tracked since enumeration
NPPES CertifiedDecember 2, 2025
NPI 1992322960 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
Licenses Licensed in NY · 024706 Licensed in PA · PS020493
Definition
A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.
26 COURT ST STE 409, Brooklyn, NY 11242

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

Dr. William Nana Osei Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7315432770
PECOS Enrollment IDI20251231000090
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

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.

Psychologist (Clinical)
26 COURT ST STE 409
BROOKLYN, NY 11242
Social Worker
26 COURT ST STE 409
BROOKLYN, NY 11242
Social Worker (Clinical)
26 COURT ST STE 409
BROOKLYN, NY 11242
Social Worker (Clinical)
26 COURT ST STE 409
BROOKLYN, NY 11242
Marriage & Family Therapist
26 COURT ST STE 409
BROOKLYN, NY 11242
Social Worker (Clinical)
26 COURT ST STE 409
BROOKLYN, NY 11242
Counselor (Mental Health)
26 COURT ST STE 409
BROOKLYN, NY 11242
Psychologist (Clinical)
26 COURT ST STE 409
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.

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 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.