Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

William T Griesser, PA-C

Individual provider Physician Assistant · NPI 1699071415

William T Griesser, PA-C is a Physician Assistant in Washington, District of Columbia. Registered with an NPI since 2011.

In the registry since
2011
What do these letters mean?
PA-C — Physician Assistant, Certified
A physician assistant who holds current national certification.

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Practice location Address checks out

1600 Pennsylvania Ave Eeob Rm 94
Washington, DC 20500
Phone: (202) 757-2499
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X

Record details

NPI number1699071415
Entity typeIndividual (Type 1)
GenderMale
Credentials PA-C
Sole proprietorNo
NPI enumeratedJanuary 27, 2011
Last updated in NPPESSeptember 8, 2025
Certification dateSeptember 8, 2025

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