Tong Zhang, M.D.
Internal Medicine Physician · San Diego, CA
Tong Zhang, M.D. is an internal medicine physician with a practice address in San Diego, California, and NPI 1942567508, issued on Apr 19, 2012. Check the license (California 133377, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tong Zhang
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 133377 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4405 Vandever Ave, San Diego, CA 92120
- Phone
- (619) 528-5000
- Enumerated
- Apr 19, 2012
- Record last updated
- Dec 6, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20150918001972); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 4405 Vandever Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ghazaleh Afshar, MDObstetrics & Gynecology Physician1679774558
- Mariann Agapito, M.A., CCC-SLPSpeech-Language Pathologist1194552950
- Calliope Allen, M.D.Ophthalmology Physician1366415440
- Kenneth Antons, M.D.Internal Medicine Physician1982668182
- Kaivon Arfaa, MDObstetrics & Gynecology Physician1912977463
- Sharmila Basu, M.D,Internal Medicine Physician1740551688
Verify Tong Zhang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 133377Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41% more Medicare Part D claims than the average internal medicine physician in 2024
4,480 Medicare Part D claims for 704 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 196 claims were for opioids.
Most prescribed
- Atorvastatin Calcium390 claims
- Amlodipine Besylate282 claims
- Levothyroxine Sodium212 claims
- Lisinopril197 claims
- Losartan Potassium165 claims
- Simvastatin129 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tong Zhang among 17,696 internal medicine physician records in California
Tong Zhang, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 68% of them.
- NPI issued2012 · 68% of these records are older, 29% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1993 · median 2004 among the 11,065 with a school on file
- Record last updated2021 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
961 internal medicine physician records list a practice address in San Diego
They are 961 of the 52,937 NPPES records with a practice address in San Diego, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Diego → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Wilfredo Abesamis, M.D.San Diego, CA 921201992754832
- Kenneth Antons, M.D.San Diego, CA 921201982668182
- David Chang, M.D.San Diego, CA 921201073596342
- Fred Corey, M.D.San Diego, CA 921201912989674
- Elaine Gertser, MDSan Diego, CA 921201992719967
- Joanne Keenan, D.O.San Diego, CA 921201043281074
- Hyunsoo Kim, MDSan Diego, CA 921201598789737
- Murray Kornblit, M.D.San Diego, CA 921201932181682
Common questions
What is Tong Zhang, M.D.'s NPI number?
Tong Zhang, M.D.'s National Provider Identifier (NPI) is 1942567508, issued on Apr 19, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Tong Zhang, M.D. located?
The NPPES record lists a practice address at 4405 Vandever Ave, San Diego, CA, 92120. Phone: (619) 528-5000. Providers update this record themselves, so call before visiting.
How can I verify Tong Zhang, M.D.'s license?
NPPES lists California license number 133377, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Tong Zhang, M.D. prescribe under Medicare Part D?
In 2024, Tong Zhang, M.D. had 4,480 Medicare Part D claims for 704 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.