Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
William J Baker, MD
Anesthesiology Physician in Ada, OK · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1538127675
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Registry record
Entity type Individual (Type 1)
Name William J Baker
Credential MD
Sex Male
Practice address 430 N Monte Vista St, Ada, OK, 74820
Phone (580) 332-2323
Fax (580) 421-6100
Enumeration date May 1, 2006
Last updated in NPPES Jun 6, 2008
Taxonomy & licenses
207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 19914 (OK) Primary
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 |
|---|---|---|---|
| 050084626 | Other | - | RAILROAD MEDICARE |
| 74821000 | Other | - | TRICARE |
| 100106440B | Medicaid | OK | - |
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
Where does William Baker practice?
The practice location on file with NPPES is in Ada, OK. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for William Baker?
The National Provider Identifier (NPI) for William Baker is 1538127675, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-06.