MS. ANDREA MINOR THACH M.D.
NPI 1265484240
Internal Medicine - Hospice and Palliative Medicine in Oakland, CA
About Ms. Andrea Minor Thach M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. ANDREA MINOR THACH M.D. (NPI 1265484240) is an individual hospice and palliative medicine provider in Oakland, California, licensed in California (G53457) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS and maintains a secondary practice location in Bellingham.
NPPES Registry Identity
Specialties & Licenses 2
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)
Ms. Andrea Minor Thach M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Andrea Thach reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Orinda, CA 94563
- Reassigned Medicare billing, California enrollment
- 4,479 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 637 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 7
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.
Other Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
OAKLAND, CA 94609
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 Andrea Thach's NPI number?
The NPI number for Andrea Thach is 1265484240. It was assigned to this individual provider in the NPPES registry on May 17, 2006.
Where is Andrea Thach located?
Andrea Thach practices at 3100 Summit St Fl 2, Oakland, CA 94609. The listed phone number is (510) 204-3410.
What is Andrea Thach's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hospice and Palliative Medicine, with taxonomy code 207RH0002X.
Is Andrea Thach enrolled in Medicare?
Yes. Andrea Thach is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Andrea Thach's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Andrea Thach reassigns Medicare benefits to 2 organizations: Sutter Bay Medical Foundation (Orinda, CA) and University Of California Sfgh Medical Group (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 Andrea Thach'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 Andrea Thach was last updated on September 9, 2020. 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.