Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. William W. Grimes, D.O.
Neurology Physician in Decatur, TX · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1538359450
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Registry record
Entity type Individual (Type 1)
Name Dr. William W. Grimes
Credential D.O.
Sex Male
Practice address 2000 S Fm 51, Suite A, Decatur, TX, 76234
Phone (940) 626-1870
Fax (940) 626-1871
Enumeration date Jul 26, 2007
Last updated in NPPES Sep 29, 2010
Taxonomy & licenses
2084N0600X Clinical Neurophysiology Physician Allopathic & Osteopathic Physicians · License F5926 (TX) Secondary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD.
About the DO credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 8V4960 | Other | TX | BCBS |
| P00296205 | Other | TX | MEDICARE RR |
| PENDING | Medicaid | TX | - |
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 William Grimes?
The National Provider Identifier (NPI) for William Grimes is 1538359450, a Type 1 (individual) record in the CMS NPPES registry.
Where does William Grimes practice?
The practice location on file with NPPES is in Decatur, TX. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Chris Mcgee Family Medicine Physician · Decatur, TX NPI 1487659439 Terrence Sullivan Family Medicine Physician · Decatur, TX NPI 1275506925 Jeffrey Krantz Diagnostic Radiology Physician · Decatur, TX NPI 1790753077 Roger Leaton Emergency Medicine Physician · Decatur, TX NPI 1730147703 Columbia Medical Center of Denton Subsidiary Lp Rehabilitation Hospital Unit · Decatur, TX NPI 1952355919 Radiology of North Texas PA Diagnostic Radiology Physician · Decatur, TX NPI 1255386751 Eddie Dunlap Certified Registered Nurse Anesthetist · Decatur, TX NPI 1245271832 Patrona Hospitalist Group, P.A. Internal Medicine Physician · Decatur, TX NPI 1760412134
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-09-29.