DR. TERESA P TAN MD
NPI 1386910636
Obstetrics & Gynecology in Mountain View, CA
About Dr. Teresa P Tan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. TERESA P TAN MD (NPI 1386910636) is an individual obstetrics & gynecology provider in Mountain View, California, licensed in California (A142220) and active in the NPI registry since March 2012. She is enrolled in Medicare PECOS.
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 (PECOS)
Dr. Teresa P Tan Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Teresa Tan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Campbell, CA 95008
- Reassigned Medicare billing, California enrollment
- 59 clinicians in this Medicare group
Greenville, SC 29607
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Obhg California PC
- 711 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94040 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
MOUNTAIN VIEW, CA 94040
MOUNTAIN VIEW, CA 94040
MOUNTAIN VIEW, CA 94040
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 Teresa Tan's NPI number?
The NPI number for Teresa Tan is 1386910636. It was assigned to this individual provider in the NPPES registry on March 30, 2012.
Where is Teresa Tan located?
Teresa Tan practices at 2485 Hospital Dr Ste 330, Mountain View, CA 94040. The listed phone number is (650) 988-7471.
What is Teresa Tan's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Teresa Tan enrolled in Medicare?
Yes. Teresa Tan is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Teresa Tan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Teresa Tan reassigns Medicare benefits to 2 organizations: Obstetrix Medical Group Of California, A Professional Corporation (Campbell, CA) and Obhg California, P.C. (Greenville, SC). 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 Teresa Tan'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 Teresa Tan was last updated on August 2, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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. Teresa P Tan, MD · NPI 1386910636
Obstetrics & Gynecology physician in Mountain View, California. Individual provider, active in the CMS NPPES registry since March 30, 2012.
## Identity
- **NPI:** 1386910636 (Entity type: Individual)
- **Enumerated:** March 30, 2012
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** A142220 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2485 HOSPITAL DR, STE 330, Mountain View, CA 94040-4101
- **Phone:** (650) 988-7471
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): Obstetrix Medical Group Of California, A Professional Corporation (NPI 1629175336, Campbell, CA); Obhg California, P.C. (NPI 1215258892, Greenville, SC) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 2, 2016
---
Source: [NPI Profile](https://npiprofile.com/npi/1386910636) · Data from the CMS NPPES public registry.