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Erin A O'Sullivan, MD

Obstetrics & Gynecology Physician in Phoenix, AZ · enumerated 2005.

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

National Provider Identifier

1336133511

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Registry record

Entity type Individual (Type 1)
Name Erin A O'Sullivan
Credential MD
Sex Female
Practice address 9305 W Thomas Rd Ste 155, Phoenix, AZ, 85037
Phone (623) 936-1780
Fax (623) 936-9116
Enumeration date Sep 2, 2005
Last updated in NPPES May 24, 2023

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 24088 (AZ) Primary
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
348856 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.

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Frequently asked questions

Is NPI 1336133511 active?
Yes, as of the latest NPPES snapshot, NPI 1336133511 is active (record last updated 2023-05-24).
How do I verify Erin O'Sullivan's NPI record?
Cross-check NPI 1336133511 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-05-24.