MARTIN CARR M.D.
NPI 1326034265
Internal Medicine - Gastroenterology in Fullerton, CA
About Martin Carr M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARTIN CARR M.D. (NPI 1326034265) is an individual gastroenterology provider in Fullerton, California, licensed in California (G59592) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS and maintains a secondary practice location in Mission Viejo.
NPPES Registry Identity
Specialties & Licenses
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 (PECOS)
Martin Carr M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Martin Carr reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Brea, CA 92821
- Reassigned Medicare billing, California enrollment
- 1,699 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 92835 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 9
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FULLERTON, CA 92835
FULLERTON, CA 92835
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 Martin Carr's NPI number?
The NPI number for Martin Carr is 1326034265. It was assigned to this individual provider in the NPPES registry on September 26, 2005.
Where is Martin Carr located?
Martin Carr practices at 1837 Sunny Crest Dr, Fullerton, CA 92835. The listed phone number is (714) 446-5831.
What is Martin Carr's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Martin Carr enrolled in Medicare?
Yes. Martin Carr is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Martin Carr's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Martin Carr reassigns Medicare benefits to Providence Medical Foundation (Brea, 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 Martin Carr'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 Martin Carr was last updated on October 20, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.