TERESITA BELEN YAP GAN MD
NPI 1114028727
Family Medicine in West Covina, CA
About Teresita Belen Yap Gan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TERESITA BELEN YAP GAN MD (NPI 1114028727) is an individual family medicine provider in West Covina, California, licensed in California (A036156) and active in the NPI registry since September 2006. She is enrolled in Medicare PECOS and is a graduate of Other (1972).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 4
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
Teresita Belen Yap Gan Md 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 Teresita Belen Gan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
West Covina, CA 91790
- Reassigned Medicare billing, California enrollment
- 4 clinicians in this Medicare group
West Covina, CA 91790
- Reassigned Medicare billing, California enrollment
- 3 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 91790 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 Teresita Belen Gan's NPI number?
The NPI number for Teresita Belen Gan is 1114028727. It was assigned to this individual provider in the NPPES registry on September 26, 2006.
Where is Teresita Belen Gan located?
Teresita Belen Gan practices at 1433 W Merced Ste 114-8, West Covina, CA 91790. The listed phone number is (626) 960-4989.
What is Teresita Belen Gan's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Teresita Belen Gan enrolled in Medicare?
Yes. Teresita Belen Gan 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 Teresita Belen Gan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Teresita Belen Gan reassigns Medicare benefits to 2 organizations: Cua & Gan Medical Corporation (West Covina, CA) and Cua, Gan And Bien Medical Corporation (West Covina, 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 Teresita Belen Gan'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 Teresita Belen Gan was last updated on July 9, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Teresita Belen Yap Gan, MD · NPI 1114028727
Family Medicine physician in West Covina, California. Individual provider, active in the CMS NPPES registry since September 26, 2006.
## Identity
- **NPI:** 1114028727 (Entity type: Individual)
- **Enumerated:** September 26, 2006
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** A036156 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1433 W MERCED, STE 114-8, West Covina, CA 91790
- **Phone:** (626) 960-4989 · **Fax:** (626) 960-5520
## 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): Cua & Gan Medical Corporation (NPI 1083715692, West Covina, CA); Cua, Gan And Bien Medical Corporation (NPI 1003626276, West Covina, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1972
## Record status
- **NPPES last updated:** July 9, 2007
- **Other identifiers:** Other W8065; Medicare ID-Type Unspecified WA36516A; Medicaid GR0013850 (CA); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1114028727) · Data from the CMS NPPES public registry.