LEON WILLIAMS MS, CGC
NPI 1194446344
Genetic Counselor, MS in Philadelphia, PA

Q: What is Leon Williams's NPI number?

The NPI number for Leon Williams is 1194446344. It was assigned to this individual provider in the NPPES registry on September 7, 2022.

Q: What is Leon Williams's specialty?

The primary specialty registered for this NPI is Genetic Counselor, MS with taxonomy code 170300000X.

Q: When was this NPI record last updated?

The NPPES record for Leon Williams was last updated on March 28, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.

Active since September 07, 2022

3500 CIVIC CENTER BLVD, PHILADELPHIA, PA 19104(215) 590-2920 Get Directions Write a Review

NPPES record last updated: March 28, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Mar 28, 2025, Sep 7, 2022 (2 updates tracked since 2022).

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About Leon Williams Ms, Cgc NPPES

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

LEON WILLIAMS MS, CGC (NPI 1194446344) is an individual genetic counselor, ms provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (GC000752) and active in the NPI registry since September 2022.

NPPES Registry Identity

NPI1194446344

Entity TypeIndividualFemale

Primary Taxonomy170300000X

Provider Legal NameLEON WILLIAMSCredential: MS, CGC

Location Address3500 CIVIC CENTER BLVDPhiladelphia, PA 19104-4395

Mailing Address4401 Penn Ave Ste 1200Pittsburgh, PA 15224-1334 · (412) 692-8413 · Fax (412) 692-6472

Phone(215) 590-2920

Sole ProprietorNo

Enumeration DateSeptember 7, 2022

Last NPPES UpdateMarch 28, 20252 updates tracked since enumeration

NPPES CertifiedMarch 28, 2025

✔ NPI 1194446344 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyGenetic Counselor, MSOther Service Providers

Taxonomy Code170300000X

License✔ Licensed in PA · GC000752

Definition

A masters trained health care provider who collects and interprets genetic family histories; assesses the risk of disease occurrence or recurrence; identifies interventions to manage or ameliorate disease risk; educates about inheritance, testing, management, prevention, ethical issues, resources, and research; and counsels to promote informed choices and adaptation. Certification was established in 1993 by the American Board of Genetic Counseling and prior to that by the American Board of Medical Genetics. Requirements for experience, licensure, and job responsibilities vary among the states.

3500 CIVIC CENTER BLVD, Philadelphia, PA 19104

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Other Names 1

Other Name (5)Leon Williams

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.

DR. REBECCA M HAMMONDS PH.D.

Psychologist (Clinical)