DR. MARSHA LEE MUIR M.D.
NPI 1740396365
Obstetrics & Gynecology in Santa Cruz, CA
About Dr. Marsha Lee Muir M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARSHA LEE MUIR M.D. (NPI 1740396365) is an individual obstetrics & gynecology provider in Santa Cruz, California, licensed in California (G50446) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS and is a graduate of George Washington University School Of Medicine (1982).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 2
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. Marsha Lee Muir 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 Reassignment
Medicare enrollment records show Marsha Muir reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Santa Cruz, CA 95065
- Reassigned Medicare billing, California enrollment
- 1,191 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 95065 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.
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.
SANTA CRUZ, CA 95065
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 Marsha Muir's NPI number?
The NPI number for Marsha Muir is 1740396365. It was assigned to this individual provider in the NPPES registry on August 23, 2006. The provider is also known as Dr. Macia Lee Muirr Marsha Muir.
Where is Marsha Muir located?
Marsha Muir practices at 1779 Dominican Way Suite B, Santa Cruz, CA 95065. The listed phone number is (831) 479-4966.
What is Marsha Muir's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Marsha Muir enrolled in Medicare?
Yes. Marsha Muir 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 organization bills Medicare for Marsha Muir's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marsha Muir reassigns Medicare benefits to Dignity Health Medical Foundation (Santa Cruz, 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 Marsha Muir'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 Marsha Muir was last updated on July 9, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Dr. Marsha Lee Muir, M.D. · NPI 1740396365
Obstetrics & Gynecology physician in Santa Cruz, California. Individual provider, active in the CMS NPPES registry since August 23, 2006.
## Identity
- **NPI:** 1740396365 (Entity type: Individual)
- **Enumerated:** August 23, 2006
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** G50446 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1779 DOMINICAN WAY, SUITE B, Santa Cruz, CA 95065-1526
- **Phone:** (831) 479-4966 · **Fax:** (831) 479-4967
## 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:** Dignity Health Medical Foundation (NPI 1598961245, Santa Cruz, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** George Washington University School Of Medicine, class of 1982
## Record status
- **NPPES last updated:** July 9, 2007
- **Other identifiers:** Medicare ID-Type Unspecified ZZZ30740Z (CA); Medicare UPIN A92977 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1740396365) · Data from the CMS NPPES public registry.