1. Home
  2. Directory
  3. California
  4. Cudahy
  5. Internal Medicine
  6. NPI Profile

MARCO A. MARTINEZ RIVERA
NPI 1134447089
Internal Medicine in Cudahy, CA

Active since May 17, 2010CLIA 05D2094072 · Waiver
4566 FLORENCE AVE, SUITE #5, CUDAHY, CA 90201(323) 771-7466(323) 771-4920 Get Directions Write a Review

NPPES record last updated: May 17, 2010. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Marco A. Martinez Rivera NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARCO A. MARTINEZ RIVERA (NPI 1134447089) is a healthcare organization registered as an internal medicine in Cudahy, California and active in the NPI registry since May 2010. The organization holds a CLIA Waiver certificate valid through April 8, 2027 and lists Marco A Martinez, M.d., as its authorized official.

NPPES Registry Identity

NPI1134447089
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameMARCO A. MARTINEZ, M.D. INC
Location Address4566 FLORENCE AVE, SUITE #5Cudahy, CA 90201-4345
Mailing Address4566 Florence Ave, Suite # 5Cudahy, CA 90201-4345 · (323) 771-7466 · Fax (323) 771-4920
Phone(323) 771-7466
Fax(323) 771-4920
Organization SubpartNo
Authorized OfficialMarco A MartinezM.d. · (323) 771-7466
Enumeration DateMay 17, 2010
✔ NPI 1134447089 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A54076
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
4566 FLORENCE AVE, Cudahy, CA 90201
Open in Google Maps ↗

Other Names 1

Other NameMarco A. Martinez Rivera

Other Identifiers 2

Medicaid00A540761CA
Medicare PINA54076CA

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Marco A. Martinez Rivera is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Marco A. Martinez Rivera, which bills Medicare for the services this clinician delivers.

Clinician (1)

Marco Martinez, M.D.
Internal Medicine
NPI 1700924909
4566 FLORENCE AVE SUITE # 5
Cudahy, CA 90201
(323) 771-7466
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D2094072

Marco A. Martinez, M.D. Inc · Cudahy, CA
Active · expires Apr 8, 2027
CLIA Number05D2094072
Laboratory TypePhysician Office
Certificate Effective DateApril 9, 2025
Certificate Expiration DateApril 8, 2027
Laboratory DirectorMarco A. Martinez, MD
Laboratory Phone(323) 771-7466
Laboratory LocationMarco A. Martinez, M.D. Inc4566 Florence Ave Ste 5, Cudahy, CA 90201
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

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 Marco A. Martinez, M.D. Inc's NPI number?

The NPI number for Marco A. Martinez, M.D. Inc is 1134447089. It was assigned to this organization in the NPPES registry on May 17, 2010. The provider is also known as Marco A. Martinez Rivera.

Where is Marco A. Martinez, M.D. Inc located?

Marco A. Martinez, M.D. Inc is located at 4566 Florence Ave Suite #5, Cudahy, CA 90201. The listed phone number is (323) 771-7466.

What is Marco A. Martinez, M.D. Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Marco A. Martinez, M.D. Inc enrolled in Medicare?

Yes. Marco A. Martinez, M.D. Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Marco A. Martinez, M.D. Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Marco A. Martinez, M.D. Inc. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Marco A. Martinez, M.D. Inc hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D2094072) is associated with this NPI, valid through April 8, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Marco A. Martinez, M.D. Inc was last updated on May 17, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.