MARIN HOSPITALIST MEDICAL GROUP, INC.
NPI 1023041753
Internal Medicine in Greenbrae, CA
About Marin Hospitalist Medical Group, Inc. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARIN HOSPITALIST MEDICAL GROUP, INC. (NPI 1023041753) is a healthcare organization registered as an internal medicine in Greenbrae, California and active in the NPI registry since July 2006. The organization lists Douglas Cohen, Ceo, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Marin Hospitalist Medical Group, Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
82Medicare enrollment records show 82 clinicians reassign Medicare billing to Marin Hospitalist Medical Group, Inc., which bills Medicare for the services they deliver. Of these, 9 practice at this address and 16 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 12
Nearest to this location (20)
See all 82Greenbrae, CA 94904
Mill Valley, CA 94941
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 Marin Hospitalist Medical Group, Inc.'s NPI number?
The NPI number for Marin Hospitalist Medical Group, Inc. is 1023041753. It was assigned to this organization in the NPPES registry on July 8, 2006.
Where is Marin Hospitalist Medical Group, Inc. located?
Marin Hospitalist Medical Group, Inc. is located at 250 Bon Air Rd 3rd Floor, Greenbrae, CA 94904. The listed phone number is (415) 925-7545.
What is Marin Hospitalist Medical Group, Inc.'s specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Marin Hospitalist Medical Group, Inc. enrolled in Medicare?
Yes. Marin Hospitalist Medical Group, Inc. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Marin Hospitalist Medical Group, Inc.?
According to the CMS Revalidation Reassignment List (October 2026 release), 82 clinicians in 12 Medicare specialties reassign their Medicare billing to Marin Hospitalist Medical Group, 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. The largest specialties are Internal Medicine (56), Hospitalist (14) and Family Practice (3). Of these, 9 practice at this address and 16 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Marin Hospitalist Medical Group, Inc. was last updated on August 19, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Marin Hospitalist Medical Group, Inc. · NPI 1023041753
Internal Medicine organization in Greenbrae, California. Organization record, active in the CMS NPPES registry since July 8, 2006.
## Identity
- **NPI:** 1023041753 (Entity type: Organization)
- **Enumerated:** July 8, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Organization subpart:** No
- **Authorized official:** Douglas Cohen, CEO
## Practice location
- **Address:** 250 BON AIR RD, 3RD FLOOR, Greenbrae, CA 94904-1702
- **Phone:** (415) 925-7545 · **Fax:** (415) 925-7008
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 82 clinicians in 12 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Internal Medicine (56), Hospitalist (14), Family Practice (3); 9 practice at this address and 16 within 10 miles; [full list](https://npiprofile.com/npi/1023041753/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 19, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1023041753) · Data from the CMS NPPES public registry.