DR. MARGARET ANNE VARTANIAN M.D.
NPI 1972820686
Anesthesiology in Menlo Park, CA
About Dr. Margaret Anne Vartanian M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARGARET ANNE VARTANIAN M.D. (NPI 1972820686) is an individual anesthesiology provider in Menlo Park, California, licensed in California (A119998) and active in the NPI registry since April 2010. She is enrolled in Medicare PECOS and is a graduate of University Of California, San Francisco School Of Medicine (2010).
NPPES Registry Identity
Specialties & Licenses 3
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. Margaret Anne Vartanian 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
5Medicare enrollment records show Margaret Vartanian reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Burlingame, CA 94010
- Reassigned Medicare billing, California enrollment
- 115 clinicians in this Medicare group
Los Gatos, CA 95032
- Reassigned Medicare billing, California enrollment
- 84 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 723 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 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 2
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.
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.
Reported Quality Measures
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Margaret Vartanian's NPI number?
The NPI number for Margaret Vartanian is 1972820686. It was assigned to this individual provider in the NPPES registry on April 21, 2010.
Where is Margaret Vartanian located?
Margaret Vartanian practices at 1422 El Camino Real, Menlo Park, CA 94025. The listed phone number is (650) 903-9500.
What is Margaret Vartanian's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Margaret Vartanian enrolled in Medicare?
Yes. Margaret Vartanian 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 Margaret Vartanian's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Vartanian reassigns Medicare benefits to 5 organizations: Anesthesia Care Associates Medical Group Inc (Burlingame, CA), El Camino Anesthesia (Los Gatos, CA), University Anesthesia Medical Group (San Francisco, CA), University Of California San Francisco (San Francisco, CA) and Ucsf Medical Group Business Services (San Francisco, 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 Margaret Vartanian'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 Margaret Vartanian was last updated on November 7, 2019. 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.
# Dr. Margaret Anne Vartanian, M.D. · NPI 1972820686
Anesthesiology physician in Menlo Park, California. Individual provider, active in the CMS NPPES registry since April 21, 2010.
## Identity
- **NPI:** 1972820686 (Entity type: Individual)
- **Enumerated:** April 21, 2010
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** A119998 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1422 EL CAMINO REAL, Menlo Park, CA 94025-4110
- **Phone:** (650) 903-9500 · **Fax:** (650) 903-9900
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Anesthesia Care Associates Medical Group Inc (NPI 1215985023, Burlingame, CA); El Camino Anesthesia (NPI 1356910053, Los Gatos, CA); University Anesthesia Medical Group (NPI 1528137296, San Francisco, CA); University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, San Francisco School Of Medicine, class of 2010
## Record status
- **NPPES last updated:** November 7, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1972820686) · Data from the CMS NPPES public registry.