TONG ZHANG M.D.
NPI 1942567508
Internal Medicine in San Diego, CA
About Tong Zhang M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TONG ZHANG M.D. (NPI 1942567508) is an individual internal medicine provider in San Diego, California, licensed in California (133377) and active in the NPI registry since April 2012. She is enrolled in Medicare PECOS and is a graduate of Other (1993).
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 and accepts Medicare assignment
Tong Zhang 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 Tong Zhang reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Diego, CA 92120
- 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 92120 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.
SAN DIEGO, CA 92120
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 Tong Zhang's NPI number?
The NPI number for Tong Zhang is 1942567508. It was assigned to this individual provider in the NPPES registry on April 19, 2012.
Where is Tong Zhang located?
Tong Zhang practices at 4405 Vandever Ave, San Diego, CA 92120. The listed phone number is (619) 528-5000.
What is Tong Zhang's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Tong Zhang enrolled in Medicare?
Yes. Tong Zhang 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 Tong Zhang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tong Zhang reassigns Medicare benefits to Southern California Permanente Medical Group (San Diego, 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 Tong Zhang'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 Tong Zhang was last updated on December 6, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Tong Zhang, M.D. · NPI 1942567508
Internal Medicine physician in San Diego, California. Individual provider, active in the CMS NPPES registry since April 19, 2012.
## Identity
- **NPI:** 1942567508 (Entity type: Individual)
- **Enumerated:** April 19, 2012
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 133377 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4405 VANDEVER AVE, San Diego, CA 92120-3315
- **Phone:** (619) 528-5000
## 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 1225060742, San Diego, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1993
## Record status
- **NPPES last updated:** December 6, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1942567508) · Data from the CMS NPPES public registry.