Clinical Pharmacology in Washington — NPI Providers
2 active Clinical Pharmacology providers have a practice location in Washington according to the latest NPPES snapshot. Each profile shows the NPI number, taxonomy code, license details, and practice address — useful for claims, credentialing, and verifying a provider.
Advertisement
Clinical Pharmacology providers in Washington
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1538294947 | Jeffrey Probstfield | Individual | Clinical Pharmacology Physician | Seattle, WA |
Frequently asked questions
How many Clinical Pharmacology providers are in Washington?
The latest NPPES snapshot lists 2 active providers with Clinical Pharmacology as their primary taxonomy and a practice location in Washington.
How do I verify a Clinical Pharmacology provider's NPI in Washington?
Open the provider's profile below to see their NPI, taxonomy code, license state, and practice address, then cross-check against the official NPPES registry (linked on every profile).
Can I get this data through an API?
Yes — the NPI Portal API provides JSON search by specialty, state, and city, plus batch NPI verification.
Source: CMS NPPES (public data). Snapshot 2026-07-09.