1. Home
  2. Directory
  3. New York
  4. New York New York
  5. Counselor
  6. NPI Profile

PETER D. WILLIAMSON LCSW
NPI 1245399567
Counselor - Mental Health in New York, NY

Active since December 06, 2006PECOS EnrolledAccepts Medicare Assignment
138 W 25TH ST STE 802A7, NEW YORK, NY 10001(646) 427-8746 Get Directions Write a Review

NPPES record last updated: April 5, 2024. Verified against the NPPES registry weekly; last sync: August 30, 2026.

About Peter D. Williamson Lcsw NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

PETER D. WILLIAMSON LCSW (NPI 1245399567) is an individual mental health provider in New York, New York, licensed in New York (0718501) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1998).

NPPES Registry Identity

NPI1245399567
Entity TypeIndividualMale
Primary Taxonomy101YM0800X
Provider Legal NamePETER D. WILLIAMSONCredential: LCSW
Location Address138 W 25TH ST STE 802A7New York, NY 10001-7405
Mailing Address29 Claremont Ave # 6nNew York, NY 10027-6814 · (646) 610-9767 · Fax (212) 663-7716
Phone(646) 427-8746
Sole ProprietorYes
Medical School CMSOtherGraduated 1998
Enumeration DateDecember 6, 2006
Last NPPES UpdateApril 5, 2024
NPPES CertifiedApril 4, 2024
✔ NPI 1245399567 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers
Taxonomy Code101YM0800X
License✔ Licensed in NY · 0718501
138 W 25TH ST STE 802A7, New York, NY 10001
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Peter D. Williamson Lcsw 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.

PECOS PAC ID941216873
PECOS Enrollment IDI20060301000326
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.

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 Peter Williamson's NPI number?

The NPI number for Peter Williamson is 1245399567. It was assigned to this individual provider in the NPPES registry on December 6, 2006.

Where is Peter Williamson located?

Peter Williamson practices at 138 W 25th St Ste 802a7, New York, NY 10001. The listed phone number is (646) 427-8746.

What is Peter Williamson's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

Is Peter Williamson enrolled in Medicare?

Yes. Peter Williamson 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.

When was this NPI record last updated?

The NPPES record for Peter Williamson was last updated on April 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.