DIANA MARTINEZ
NPI 1356807143
Nurse Practitioner - Family in Oak Hills, CA
About Diana Martinez NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DIANA MARTINEZ (NPI 1356807143) is an individual family provider in Oak Hills, California, licensed in California (95010292) and active in the NPI registry since February 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses
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
Diana Martinez 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 Reassignments
3Medicare enrollment records show Diana Martinez reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oak Hills, CA 92344
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Peter Stoops Do Inc
- 2 clinicians in this Medicare group
Fontana, CA 92336
- Reassigned Medicare billing, California enrollment
- 5,228 clinicians in this Medicare group
Los Angeles, CA 90024
- Reassigned Medicare billing, California enrollment
- 2 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92344 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Diana Martinez's NPI number?
The NPI number for Diana Martinez is 1356807143. It was assigned to this individual provider in the NPPES registry on February 16, 2019.
Where is Diana Martinez located?
Diana Martinez practices at 13312 Ranchero Rd, Oak Hills, CA 92344. The listed phone number is (760) 981-0132.
What is Diana Martinez's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Diana Martinez enrolled in Medicare?
Yes. Diana Martinez 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 organizations bill Medicare for Diana Martinez's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Diana Martinez reassigns Medicare benefits to 3 organizations: Peter Stoops D.O. Inc (Oak Hills, CA), Southern California Permanente Medical Group (Fontana, CA) and Michael Aaron Lalezarian, MD Corp (Los Angeles, CA). Each 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 Diana Martinez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Diana Martinez was last updated on October 15, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.
# Diana Martinez · NPI 1356807143
Family physician in Oak Hills, California. Individual provider, active in the CMS NPPES registry since February 16, 2019.
## Identity
- **NPI:** 1356807143 (Entity type: Individual)
- **Enumerated:** February 16, 2019
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 95010292 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 13312 RANCHERO RD, Oak Hills, CA 92344-4812
- **Phone:** (760) 981-0132
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Peter Stoops D.O. Inc (NPI 1851867758, Oak Hills, CA); Southern California Permanente Medical Group (NPI 1316463763, Fontana, CA); Michael Aaron Lalezarian, MD Corp (NPI 1891314290, Los Angeles, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** October 15, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1356807143) · Data from the CMS NPPES public registry.