MARTIN L. ROSSMAN, M.D., A PROFESSIONAL CORPORATION
NPI 1124310636
General Practice in Greenbrae, CA
About Martin L. Rossman, M.d., A Professional Corporation NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARTIN L. ROSSMAN, M.D., A PROFESSIONAL CORPORATION (NPI 1124310636) is a healthcare organization registered as a general practice in Greenbrae, California and active in the NPI registry since May 2011. The organization lists Martin L. Rossman, Owner, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Martin L. Rossman, M.d., A Professional Corporation is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by December 31, 2026
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Martin L. Rossman, M.D., A Professional Corporation, which bills Medicare for the services this clinician delivers.
Clinician (1)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 L. Rossman, M.D., A Professional Corporation's NPI number?
The NPI number for Martin L. Rossman, M.D., A Professional Corporation is 1124310636. It was assigned to this organization in the NPPES registry on May 3, 2011.
Where is Martin L. Rossman, M.D., A Professional Corporation located?
Martin L. Rossman, M.D., A Professional Corporation is located at 1341 S Eliseo Dr Suite 350, Greenbrae, CA 94904. The listed phone number is (415) 925-8600.
What is Martin L. Rossman, M.D., A Professional Corporation's specialty?
The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.
Is Martin L. Rossman, M.D., A Professional Corporation enrolled in Medicare?
Yes. Martin L. Rossman, M.D., A Professional Corporation is registered in the Medicare PECOS enrollment system.
When is Martin L. Rossman, M.D., A Professional Corporation's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (California, Clinic/Group Practice) is due for revalidation by December 31, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through Martin L. Rossman, M.D., A Professional Corporation?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (General Practice) reassigns their Medicare billing to Martin L. Rossman, M.D., A Professional Corporation. 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.
When was this NPI record last updated?
The NPPES record for Martin L. Rossman, M.D., A Professional Corporation was last updated on September 15, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Martin L. Rossman, M.d., A Professional Corporation · NPI 1124310636
General Practice organization in Greenbrae, California. Organization record, active in the CMS NPPES registry since May 3, 2011.
## Identity
- **NPI:** 1124310636 (Entity type: Organization)
- **Enumerated:** May 3, 2011
- **Primary specialty:** General Practice · taxonomy 208D00000X
- **Organization subpart:** No
- **Authorized official:** Martin Rossman, OWNER
## Practice location
- **Address:** 1341 S ELISEO DR, SUITE 350, Greenbrae, CA 94904-2000
- **Phone:** (415) 925-8600 · **Fax:** (415) 925-8604
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** December 31, 2026 (Non-DME Part B, California, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 1 clinician (General Practice) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 15, 2011
- **Other identifiers:** Medicare UPIN A35026 (CA); Medicare PIN 00C32668 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1124310636) · Data from the CMS NPPES public registry.