DR. AN T PHAN MD
NPI 1336465293
Anesthesiology in Sacramento, CA
About Dr. An T Phan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. AN T PHAN MD (NPI 1336465293) is an individual anesthesiology provider in Sacramento, California, licensed in California (A132573) and active in the NPI registry since April 2010. She is enrolled in Medicare PECOS and maintains a secondary practice location in Gilroy.
NPPES Registry Identity
Specialties & Licenses
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 (PECOS)
Dr. An T Phan Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show An Phan reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Palo Alto, CA 94306
- Reassigned Medicare billing, California enrollment
- 2,460 clinicians in this Medicare group
Santa Clara, CA 95050
- Reassigned Medicare billing, California enrollment
- 2 clinicians in this Medicare group
Madera, CA 93637
- Reassigned Medicare billing, California enrollment
- 92 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.
SACRAMENTO, CA 95817
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 An Phan's NPI number?
The NPI number for An Phan is 1336465293. It was assigned to this individual provider in the NPPES registry on April 15, 2010.
Where is An Phan located?
An Phan practices at 4150 V St # 1110, Sacramento, CA 95817. The listed phone number is (408) 828-2712.
What is An Phan's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is An Phan enrolled in Medicare?
Yes. An Phan is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for An Phan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), An Phan reassigns Medicare benefits to 3 organizations: County Of Santa Clara (Palo Alto, CA), Uday Jain M D Professional Corporation (Santa Clara, CA) and Central California Anesthesiology Solutions (Madera, 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 An Phan'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 An Phan was last updated on March 17, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.