Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Jack W Grinnan, M.D.
Urology Physician in Mesa, AZ · enumerated 2013.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1487090288
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Jack W Grinnan
Credential M.D.
Sex Male
Practice address 2530 E Southern Ave, Mesa, AZ, 85204
Phone (480) 834-4188
Fax (480) 834-6181
Enumeration date May 20, 2013
Last updated in NPPES Mar 21, 2025
Taxonomy & licenses
390200000X Student in an Organized Health Care Education/Training Program Student, Health Care 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 |
|---|---|---|---|
| 372496 | 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 Jack Grinnan?
The National Provider Identifier (NPI) for Jack Grinnan is 1487090288, a Type 1 (individual) record in the CMS NPPES registry.
Where does Jack Grinnan practice?
The practice location on file with NPPES is in Mesa, AZ. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Richard Merkley Family Medicine Physician · Mesa, AZ NPI 1326041096 Thomas Sutton Family Medicine Physician · Mesa, AZ NPI 1225031982 Matthew Karlovsky Urology Physician · Mesa, AZ NPI 1568450666 Benjamin Stockton Urology Physician · Mesa, AZ NPI 1770515959 Raul Webster Urology Physician · Mesa, AZ NPI 1306855028 Jamie Larsen Medical Physician Assistant · Mesa, AZ NPI 1659410983 Richard L Merkley MD PC Family Medicine Physician · Mesa, AZ NPI 1811228661 Thomas E Sutton MD PC Family Medicine Physician · Mesa, AZ NPI 1346571197
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-21.