MARIANA VILLANUEVA LENERO MD
NPI 1194385666
Obstetrics & Gynecology in Oxnard, CA
About Mariana Villanueva Lenero Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARIANA VILLANUEVA LENERO MD (NPI 1194385666) is an individual obstetrics & gynecology provider in Oxnard, California, licensed in California (A211679) and active in the NPI registry since June 2019. She is enrolled in Medicare PECOS, is affiliated with Providence St Mary Medical Center, and maintains a secondary practice location in Walla Walla.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mariana Villanueva Lenero Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Mariana Villanueva Lenero reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Walla Walla, WA 99362
- Reassigned Medicare billing, Washington enrollment
- 76 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Providence St Mary Medical Center
Acute Care Hospitals · Walla Walla, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 93036 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 16
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
OXNARD, CA 93036
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Mariana Villanueva Lenero's NPI number?
The NPI number for Mariana Villanueva Lenero is 1194385666. It was assigned to this individual provider in the NPPES registry on June 17, 2019.
Where is Mariana Villanueva Lenero located?
Mariana Villanueva Lenero practices at 2600 E Vineyard Ave, Oxnard, CA 93036. The listed phone number is (805) 436-3444.
What is Mariana Villanueva Lenero's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Mariana Villanueva Lenero enrolled in Medicare?
Yes. Mariana Villanueva Lenero is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Mariana Villanueva Lenero's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mariana Villanueva Lenero reassigns Medicare benefits to Privia Medical Group Washington, PLLC (Walla Walla, WA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mariana Villanueva Lenero's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mariana Villanueva Lenero accept?
Health plans from Ambetter Health, Moda Health Plan, Inc., Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Mariana Villanueva Lenero as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Mariana Villanueva Lenero affiliated with any hospitals?
According to CMS data, Mariana Villanueva Lenero is affiliated with Providence St Mary Medical Center.
When was this NPI record last updated?
The NPPES record for Mariana Villanueva Lenero was last updated on September 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 43 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Mariana Villanueva Lenero, MD · NPI 1194385666
Obstetrics & Gynecology physician in Oxnard, California. Individual provider, active in the CMS NPPES registry since June 17, 2019.
## Identity
- **NPI:** 1194385666 (Entity type: Individual)
- **Enumerated:** June 17, 2019
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** A211679 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2600 E VINEYARD AVE, Oxnard, CA 93036-1615
- **Phone:** (805) 436-3444 · **Fax:** (805) 485-4160
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Privia Medical Group Washington, PLLC (NPI 1780658419, Walla Walla, WA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2015
## Record status
- **NPPES last updated:** September 18, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1194385666) · Data from the CMS NPPES public registry.