Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. William Forrest Stewart, RPH
Pharmacist in Oakland, CA · enumerated 2020.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1184231961
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Registry record
Entity type Individual (Type 1)
Name Mr. William Forrest Stewart
Credential RPH
Sex Male
Practice address 400 30th St Ste 300, Oakland, CA, 94609
Phone (510) 628-0954
Fax (888) 972-6505
Enumeration date Sep 25, 2020
Last updated in NPPES Sep 25, 2020
Taxonomy & licenses
RPH · Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy.
About the RPH credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Is NPI 1184231961 active?
Yes, as of the latest NPPES snapshot, NPI 1184231961 is active (record last updated 2020-09-25).
How do I verify William Stewart's NPI record?
Cross-check NPI 1184231961 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Stephen Knox Internal Medicine Physician · Oakland, CA NPI 1255439345 Sandra Win Family Medicine Physician · Oakland, CA NPI 1497800718 Sean Luis Adult Health Nurse Practitioner · Oakland, CA NPI 1417320433 Alberletia Joseph Nurse Practitioner · Oakland, CA NPI 1114418209 Cindy Tran Pharmacist · Oakland, CA NPI 1386272821 Wilsen Lance Calaguas Pharmacist · Oakland, CA NPI 1033061031
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-09-25.