NPI Portal NPI Lookup & Verification

Dr. Stephen Alexander Ash, MD

Dr. Stephen Alexander Ash is a General Practice Physician provider (General Practice) practicing in Glendale, AZ, registered in the NPPES registry with NPI 1437128279 since 2006. The credential MD stands for Doctor of Medicine.

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NPI 1437128279
Entity type Individual (Type 1)
Name Dr. Stephen Alexander Ash
Credential MD
Sex Male
Practice address 5410 W THUNDERBIRD, STE 101, Glendale, AZ, 85306
Phone 6025306189
Fax 6025482292
Enumeration date 2006-03-15
Last updated in NPPES 2007-07-08

Taxonomy & licenses

Taxonomy code Specialty Primary License State
208D00000X General Practice Physician Primary 15494 AZ

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
15494 Other AZ ARIZONA MEDICAL BOARD
Copy-ready billing details
Provider: Stephen Ash, MD
NPI: 1437128279
Taxonomy: 208D00000X (General Practice Physician)
Address: 5410 W THUNDERBIRD, STE 101, Glendale, AZ, 85306

Verify this record

Cross-check NPI 1437128279 against the authoritative CMS record: view Dr. Stephen Alexander Ash on the official NPPES registry .

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. Read the full guide or validate an NPI number.

Frequently asked questions

Where does Stephen Ash practice?
The practice location on file with NPPES is in Glendale, AZ. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Stephen Ash?
The National Provider Identifier (NPI) for Stephen Ash is 1437128279, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.