CATHY TONG M.D.
NPI 1558545277
Family Medicine in Whittier, CA
About Cathy Tong M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CATHY TONG M.D. (NPI 1558545277) is an individual family medicine provider in Whittier, California, licensed in California (A102106) and active in the NPI registry since December 2007. She is enrolled in Medicare PECOS, maintains a secondary practice location in Portland, and is a graduate of Other (2006).
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 and accepts Medicare assignment
Cathy Tong M.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 Reassignment
Medicare enrollment records show Cathy Tong reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Pico Rivera, CA 90660
- Reassigned Medicare billing, California enrollment
- 13,921 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 90606 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.
WHITTIER, CA 90606
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 Cathy Tong's NPI number?
The NPI number for Cathy Tong is 1558545277. It was assigned to this individual provider in the NPPES registry on December 18, 2007.
Where is Cathy Tong located?
Cathy Tong practices at 12291 Washington Blvd Suite 500, Whittier, CA 90606. The listed phone number is (562) 698-0811.
What is Cathy Tong's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Cathy Tong enrolled in Medicare?
Yes. Cathy Tong 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 organization bills Medicare for Cathy Tong's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Cathy Tong reassigns Medicare benefits to Southern California Permanente Medical Group (Pico Rivera, CA). The 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 Cathy Tong'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 Cathy Tong was last updated on October 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 24 days 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.
# Cathy Tong, M.D. · NPI 1558545277
Family Medicine physician in Whittier, California. Individual provider, active in the CMS NPPES registry since December 18, 2007.
## Identity
- **NPI:** 1558545277 (Entity type: Individual)
- **Enumerated:** December 18, 2007
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** A102106 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 12291 WASHINGTON BLVD, SUITE 500, Whittier, CA 90606-2500
- **Phone:** (562) 698-0811
## 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:** Southern California Permanente Medical Group (NPI 1891287827, Pico Rivera, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2006
## Record status
- **NPPES last updated:** October 2, 2026
---
Source: [NPI Profile](https://npiprofile.com/npi/1558545277) · Data from the CMS NPPES public registry.