NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Marilyn Martin Petro, WHNP-RX AUTH

Obstetrics & Gynecology Nurse Practitioner in Keller, TX · enumerated 2010.

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

National Provider Identifier

1336464783

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mrs. Marilyn Martin Petro
Credential WHNP-RX AUTH
Sex Female
Practice address 1141 Keller Pkwy, Suite A, Keller, TX, 76248
Fax (817) 745-2601
Enumeration date Mar 29, 2010
Last updated in NPPES Mar 29, 2010

Taxonomy & licenses

363LX0001X Obstetrics & Gynecology Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 685722 (TX) Primary

Other identifiers

Identifier Type State Issuer
1578768701 Other TX GROUP NPI

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 Marilyn Petro practice?
The practice location on file with NPPES is in Keller, TX. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Marilyn Petro?
The National Provider Identifier (NPI) for Marilyn Petro is 1336464783, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-03-29.