Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Susan Mcmahon, MD

Pediatrics Physician in Tucson, AZ · enumerated 2005.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1669455507

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Registry record

Entity type Individual (Type 1)

Name Susan Mcmahon

Credential MD

Sex Female

Practice address 1530 W Commerce Ct, Tucson, AZ, 85746

Phone (520) 670-3909

Fax (520) 806-2625

Enumeration date Nov 23, 2005

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 31091 (AZ) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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 → Validate an NPI →

Frequently asked questions

Where does Susan Mcmahon practice?

The practice location on file with NPPES is in Tucson, AZ. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Susan Mcmahon?

The National Provider Identifier (NPI) for Susan Mcmahon is 1669455507, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.