Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mariana Villanueva Lenero, MD

Obstetrics & Gynecology Physician in Walla Walla, WA · enumerated 2019.

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

National Provider Identifier

1194385666

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Registry record

Entity type Individual (Type 1)

Name Mariana Villanueva Lenero

Credential MD

Sex Female

Practice address 55 W Tietan St, Walla Walla, WA, 99362

Phone (509) 525-3720

Enumeration date Jun 17, 2019

Last updated in NPPES Oct 16, 2023

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care · License 390200000X Secondary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License MD61421236 (WA) 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

What is the NPI number for Mariana Villanueva Lenero?

The National Provider Identifier (NPI) for Mariana Villanueva Lenero is 1194385666, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mariana Villanueva Lenero practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-10-16.