Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

MR. THOMAS HARRIS WASHINGTON IV MS, CGC
NPI 1598679037
Genetic Counselor, MS in Harrisburg, PA

Active since October 01, 2026
4300 LONDONDERRY RD STE 202, HARRISBURG, PA 17109(717) 545-5000(717) 545-5001 Get Directions Write a Review

NPPES record added: October 1, 2026. Verified against the NPPES registry weekly; last sync: October 04, 2026.

About Mr. Thomas Harris Washington Iv Ms, Cgc NPPES

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

MR. THOMAS HARRIS WASHINGTON IV MS, CGC (NPI 1598679037) is an individual genetic counselor, ms provider in Harrisburg, Pennsylvania and active in the NPI registry since October 2026.

NPPES Registry Identity

NPI1598679037
Entity TypeIndividualMale
Primary Taxonomy170300000X
Provider Legal NameMR. THOMAS HARRIS WASHINGTON IVCredential: MS, CGC
Location Address4300 LONDONDERRY RD STE 202Harrisburg, PA 17109-5317
Mailing Address429 Montgomery Ave Apt B404Haverford, PA 19041-1735 · (724) 766-6624
Fax(717) 545-5001
Sole ProprietorNo
Enumeration DateOctober 1, 2026
NPPES CertifiedOctober 1, 2026
✔ NPI 1598679037 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyGenetic Counselor, MSOther Service Providers
Taxonomy Code170300000X
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.
4300 LONDONDERRY RD STE 202, Harrisburg, PA 17109

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Surgery
4300 LONDONDERRY RD STE 202
HARRISBURG, PA 17109
Genetic Counselor, MS
4300 LONDONDERRY RD STE 202
HARRISBURG, PA 17109
Genetic Counselor, MS
4300 LONDONDERRY RD STE 202
HARRISBURG, PA 17109

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 Thomas Washington's NPI number?

The NPI number for Thomas Washington is 1598679037. It was assigned to this individual provider in the NPPES registry on October 1, 2026.

Where is Thomas Washington located?

Thomas Washington practices at 4300 Londonderry Rd Ste 202, Harrisburg, PA 17109. The listed phone number is (717) 545-5000.

What is Thomas Washington's specialty?

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

When was this NPI record last updated?

The NPPES record for Thomas Washington was last updated on October 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 days 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.