DR. CAROLINE M. TANNER M.D., PH.D.
NPI 1043256035
Legal Medicine in Sunnyvale, CA
About Dr. Caroline M. Tanner M.d., Ph.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CAROLINE M. TANNER M.D., PH.D. (NPI 1043256035) is an individual legal medicine provider in Sunnyvale, California, licensed in California (G68771) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS and is a graduate of Loyola University Of Chicago, Stritch School Of Medicine (1976).
NPPES Registry Identity
Specialties & Licenses
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. Caroline M. Tanner M.d., Ph.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
2Medicare enrollment records show Caroline Tanner reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
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.
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 6
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 Caroline Tanner's NPI number?
The NPI number for Caroline Tanner is 1043256035. It was assigned to this individual provider in the NPPES registry on June 20, 2006.
Where is Caroline Tanner located?
Caroline Tanner practices at 675 Almanor Ave, Sunnyvale, CA 94085. The listed phone number is (408) 734-2800.
What is Caroline Tanner's specialty?
The primary specialty registered for this NPI is Legal Medicine with taxonomy code 173000000X.
Is Caroline Tanner enrolled in Medicare?
Yes. Caroline Tanner 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 Caroline Tanner's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Caroline Tanner reassigns Medicare benefits to 2 organizations: 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 Caroline Tanner'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 Caroline Tanner was last updated on January 29, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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. Caroline M. Tanner, M.D., PH.D. · NPI 1043256035
Legal Medicine provider in Sunnyvale, California. Individual provider, active in the CMS NPPES registry since June 20, 2006.
## Identity
- **NPI:** 1043256035 (Entity type: Individual)
- **Enumerated:** June 20, 2006
- **Primary specialty:** Legal Medicine · taxonomy 173000000X
- **State license:** G68771 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 675 ALMANOR AVE, Sunnyvale, CA 94085-2934
- **Phone:** (408) 734-2800 · **Fax:** (408) 734-8455
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): 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:** Loyola University Of Chicago, Stritch School Of Medicine, class of 1976
## Record status
- **NPPES last updated:** January 29, 2013
- **Other identifiers:** Medicare UPIN D15057 (CA); Medicare PIN 00G687710 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1043256035) · Data from the CMS NPPES public registry.