Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ronald George Williams, MD
Pediatrics Physician in Olympia, WA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1831304906
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Registry record
Entity type Individual (Type 1)
Name Ronald George Williams
Credential MD
Sex Male
Practice address 3504 12th Ave Ne, Olympia, WA, 98506
Phone (360) 252-3801
Enumeration date May 11, 2007
Last updated in NPPES Feb 5, 2014
Taxonomy & licenses
2080A0000X Pediatric Adolescent Medicine Physician Allopathic & Osteopathic Physicians · License 36151 (AZ) Secondary
208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License MD00030788 (WA) Primary
207PP0204X Pediatric Emergency Medicine (Emergency Medicine) Physician Allopathic & Osteopathic Physicians · License MD00030788 (WA) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1518913318 | Other | WA | MEDICARE GROUP NPI |
| 8858118 | Other | WA | MEDICARE GROUP |
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
What is the NPI number for Ronald Williams?
The National Provider Identifier (NPI) for Ronald Williams is 1831304906, a Type 1 (individual) record in the CMS NPPES registry.
Where does Ronald Williams practice?
The practice location on file with NPPES is in Olympia, WA. Providers can have multiple locations; NPPES lists the primary practice address.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-02-05.