DR. BRIAN G. ASH M.D.
NPI 1962669531
Anesthesiology in Menlo Park, CA
About Dr. Brian G. Ash M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. BRIAN G. ASH M.D. (NPI 1962669531) is an individual anesthesiology provider in Menlo Park, California, licensed in California (103642) and active in the NPI registry since May 2008. He is enrolled in Medicare PECOS and is a graduate of Perelman School Of Med At The University Of Pennsylvania (2006).
NPPES Registry Identity
Specialties & Licenses
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. Brian G. Ash 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 Brian Ash reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Los Gatos, CA 95032
- Reassigned Medicare billing, California enrollment
- 84 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 3
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 Brian Ash's NPI number?
The NPI number for Brian Ash is 1962669531. It was assigned to this individual provider in the NPPES registry on May 20, 2008.
Where is Brian Ash located?
Brian Ash practices at 1422 El Camino Real, Menlo Park, CA 94025. The listed phone number is (650) 903-9500.
What is Brian Ash's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Brian Ash enrolled in Medicare?
Yes. Brian Ash 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 Brian Ash's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Brian Ash reassigns Medicare benefits to El Camino Anesthesia (Los Gatos, 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 Brian Ash'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 Brian Ash was last updated on June 20, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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. Brian G. Ash, M.D. · NPI 1962669531
Anesthesiology physician in Menlo Park, California. Individual provider, active in the CMS NPPES registry since May 20, 2008.
## Identity
- **NPI:** 1962669531 (Entity type: Individual)
- **Enumerated:** May 20, 2008
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 103642 (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:** El Camino Anesthesia (NPI 1356910053, Los Gatos, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Perelman School Of Med At The University Of Pennsylvania, class of 2006
## Record status
- **NPPES last updated:** June 20, 2014
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Source: [NPI Profile](https://npiprofile.com/npi/1962669531) · Data from the CMS NPPES public registry.