DR. DOUGLAS E COHEN M.D.
NPI 1932127248
Internal Medicine in Mill Valley, CA
About Dr. Douglas E Cohen M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DOUGLAS E COHEN M.D. (NPI 1932127248) is an individual internal medicine provider in Mill Valley, California, licensed in California (G75866) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Greenbrae, and is a graduate of New York University School Of Medicine (1991).
NPPES Registry Identity
Specialties & Licenses 2
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 and accepts Medicare assignment
Dr. Douglas E Cohen M.d. 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 Reassignments
3Medicare enrollment records show Douglas Cohen reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Mill Valley, CA 94941
- Reassigned Medicare billing, California enrollment
Greenbrae, CA 94904
- Reassigned Medicare billing, California enrollment
- 962 clinicians in this Medicare group
Greenbrae, CA 94904
- Reassigned Medicare billing, California enrollment
- 82 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.
Areas of Expertise CMS Part B claims 8
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94941 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MILL VALLEY, CA 94941
MILL VALLEY, CA 94941
MILL VALLEY, CA 94941
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 Douglas Cohen's NPI number?
The NPI number for Douglas Cohen is 1932127248. It was assigned to this individual provider in the NPPES registry on July 17, 2006.
Where is Douglas Cohen located?
Douglas Cohen practices at 655 Redwood Hwy Frontage Rd Ste 375, Mill Valley, CA 94941. The listed phone number is (415) 968-1888.
What is Douglas Cohen's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Douglas Cohen enrolled in Medicare?
Yes. Douglas Cohen 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 organizations bill Medicare for Douglas Cohen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Douglas Cohen reassigns Medicare benefits to 3 organizations: Douglas E. Cohen MD, Inc. (Mill Valley, CA), Galen Inpatient Physicians PC (Greenbrae, CA) and Marin Hospitalist Medical Group, Inc. (Greenbrae, CA). Each 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 Douglas Cohen'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 Douglas Cohen was last updated on May 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months 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.
# Dr. Douglas E Cohen, M.D. · NPI 1932127248
Internal Medicine physician in Mill Valley, California. Individual provider, active in the CMS NPPES registry since July 17, 2006.
## Identity
- **NPI:** 1932127248 (Entity type: Individual)
- **Enumerated:** July 17, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** G75866 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 655 REDWOOD HWY FRONTAGE RD STE 375, Mill Valley, CA 94941-3041
- **Phone:** (415) 968-1888 · **Fax:** (415) 718-0294
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Douglas E. Cohen MD, Inc. (NPI 1174340475, Mill Valley, CA); Galen Inpatient Physicians PC (NPI 1841037850, Greenbrae, CA); Marin Hospitalist Medical Group, Inc. (NPI 1023041753, Greenbrae, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** New York University School Of Medicine, class of 1991
## Record status
- **NPPES last updated:** May 19, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1932127248) · Data from the CMS NPPES public registry.