MARSHALL COOPERSON DO
NPI 1194743195
Internal Medicine in Napa, CA
About Marshall Cooperson Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARSHALL COOPERSON DO (NPI 1194743195) is an individual internal medicine provider in Napa, California, licensed in California (20A5492) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Marshall Cooperson Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Marshall Cooperson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Napa, CA 94558
- Reassigned Medicare billing, California enrollment
- 32 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 94558 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 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NAPA, CA 94558
NAPA, CA 94558
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 Marshall Cooperson's NPI number?
The NPI number for Marshall Cooperson is 1194743195. It was assigned to this individual provider in the NPPES registry on July 17, 2006.
Where is Marshall Cooperson located?
Marshall Cooperson practices at 3010 Beard Rd, Napa, CA 94558. The listed phone number is (707) 257-1550.
What is Marshall Cooperson's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Marshall Cooperson enrolled in Medicare?
Yes. Marshall Cooperson is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Marshall Cooperson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marshall Cooperson reassigns Medicare benefits to St. Joseph Health Northern California, LLC (Napa, 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 Marshall Cooperson'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 Marshall Cooperson was last updated on October 8, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Marshall Cooperson, DO · NPI 1194743195
Internal Medicine physician in Napa, California. Individual provider, active in the CMS NPPES registry since July 17, 2006.
## Identity
- **NPI:** 1194743195 (Entity type: Individual)
- **Enumerated:** July 17, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 20A5492 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3010 BEARD RD, Napa, CA 94558-3442
- **Phone:** (707) 257-1550 · **Fax:** (707) 257-8219
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** St. Joseph Health Northern California, LLC (NPI 1235218785, Napa, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 8, 2008
- **Other identifiers:** Medicare PIN 020A54920 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1194743195) · Data from the CMS NPPES public registry.