ETHEL DE JESUS MARTINEZ
NPI 1306359294
Nurse Practitioner - Family in Winnetka, CA
About Ethel De Jesus Martinez NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ETHEL DE JESUS MARTINEZ (NPI 1306359294) is an individual family provider in Winnetka, California, licensed in California (95008170) and active in the NPI registry since November 2017. She is enrolled in Medicare PECOS, maintains a secondary practice location in Winnetka, and is a graduate of Other (2017).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Ethel De Jesus 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 Reassignment
Medicare enrollment records show Ethel Martinez reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Winnetka, CA 91306
- Reassigned Medicare billing, California enrollment
- 38 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
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 91306 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Ethel Martinez's NPI number?
The NPI number for Ethel Martinez is 1306359294. It was assigned to this individual provider in the NPPES registry on November 14, 2017.
Where is Ethel Martinez located?
Ethel Martinez practices at 20800 Sherman Way, Winnetka, CA 91306. The listed phone number is (818) 967-0148.
What is Ethel Martinez's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Ethel Martinez enrolled in Medicare?
Yes. Ethel 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 organization bills Medicare for Ethel Martinez's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ethel Martinez reassigns Medicare benefits to El Proyecto Del Barrio, Inc. (Winnetka, CA). 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 Ethel 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 Ethel Martinez was last updated on March 17, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Ethel De Jesus Martinez · NPI 1306359294
Family physician in Winnetka, California. Individual provider, active in the CMS NPPES registry since November 14, 2017.
## Identity
- **NPI:** 1306359294 (Entity type: Individual)
- **Enumerated:** November 14, 2017
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 95008170 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 20800 SHERMAN WAY, Winnetka, CA 91306-2707
- **Phone:** (818) 967-0148
## 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:** El Proyecto Del Barrio, Inc. (NPI 1538130893, Winnetka, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** March 17, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1306359294) · Data from the CMS NPPES public registry.