Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. John Matthew Williams
Urology Physician in Mesa, AZ · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1942797477
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Registry record
Entity type Individual (Type 1)
Name Dr. John Matthew Williams
Sex Male
Practice address 6116 E Arbor Ave, Building 2, Suite 108, Mesa, AZ, 85206
Phone (480) 219-1010
Fax (480) 219-1771
Enumeration date Apr 19, 2018
Last updated in NPPES Oct 4, 2024
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 117751400 | Medicaid | FL | - |
| 2GS0N | Other | FL | BCBS |
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 John Williams practice?
The practice location on file with NPPES is in Mesa, AZ. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for John Williams?
The National Provider Identifier (NPI) for John Williams is 1942797477, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Douglas Griffin Podiatrist · Mesa, AZ NPI 1215923750 Lewis Freed Podiatrist · Mesa, AZ NPI 1407842941 Zellman Skloven Cardiovascular Disease Physician · Mesa, AZ NPI 1386615680 Timothy Walker Specialist · Mesa, AZ NPI 1114999562 Todd Gunzy Podiatrist · Mesa, AZ NPI 1952362253 Scott Wyant Podiatrist · Mesa, AZ NPI 1164483210 Panagiotis Panotopoulos Clinical Cardiac Electrophysiology Physician · Mesa, AZ NPI 1629023411 Victor Sein Cardiovascular Disease Physician · Mesa, AZ NPI 1508882572
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-10-04.