MS. CRISTINA BELEN MARTINEZ MSW, MPH
NPI 1972054369
Social Worker in Los Angeles, CA
About Ms. Cristina Belen Martinez Msw, Mph NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. CRISTINA BELEN MARTINEZ MSW, MPH (NPI 1972054369) is an individual social worker in Los Angeles, California and active in the NPI registry since October 2016. She is enrolled in Medicare PECOS and is a graduate of Other (2015).
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
Ms. Cristina Belen Martinez Msw, Mph 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 Cristina Martinez reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Los Angeles, CA 90027
- Reassigned Medicare billing, California enrollment
- 13,921 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.
Other Providers at the Same Location NPPES 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LOS ANGELES, CA 90089
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 Cristina Martinez's NPI number?
The NPI number for Cristina Martinez is 1972054369. It was assigned to this individual provider in the NPPES registry on October 20, 2016.
Where is Cristina Martinez located?
Cristina Martinez practices at 669 W 34th St, Los Angeles, CA 90089. The listed phone number is (213) 740-2711.
What is Cristina Martinez's specialty?
The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.
Is Cristina Martinez enrolled in Medicare?
Yes. Cristina 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 Cristina Martinez's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Cristina Martinez reassigns Medicare benefits to Southern California Permanente Medical Group (Los Angeles, 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 Cristina 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 Cristina Martinez was last updated on December 10, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Ms. Cristina Belen Martinez, MSW, MPH · NPI 1972054369
Social Worker provider in Los Angeles, California. Individual provider, active in the CMS NPPES registry since October 20, 2016.
## Identity
- **NPI:** 1972054369 (Entity type: Individual)
- **Enumerated:** October 20, 2016
- **Primary specialty:** Social Worker · taxonomy 104100000X
- **Sole proprietor:** Yes
## Practice location
- **Address:** 669 W 34TH ST, Los Angeles, CA 90089-4117
- **Phone:** (213) 740-2711
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Southern California Permanente Medical Group (NPI 1134151657, Los Angeles, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2015
## Record status
- **NPPES last updated:** December 10, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1972054369) · Data from the CMS NPPES public registry.