Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mark D. Williams, MD
Surgery Physician in Payson, AZ · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1629143144
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Registry record
Entity type Individual (Type 1)
Name Mark D. Williams
Credential MD
Sex Male
Practice address 803 S Ponderosa St, Suite C, Payson, AZ, 85541
Phone (928) 472-1222
Fax (928) 472-1213
Enumeration date Nov 21, 2006
Last updated in NPPES May 22, 2015
Taxonomy & licenses
2086S0127X Trauma Surgery Physician Allopathic & Osteopathic Physicians · License 29945 (AZ) 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 |
|---|---|---|---|
| 646490 | Medicaid | AZ | - |
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 Mark Williams?
The National Provider Identifier (NPI) for Mark Williams is 1629143144, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Williams practice?
The practice location on file with NPPES is in Payson, AZ. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-05-22.