Tsung-Yun Tzeng, DO
Family Medicine Physician · San Francisco, CA
Tsung-Yun Tzeng, DO is a family medicine physician with a practice address in San Francisco, California, and NPI 1790281715, issued on Mar 30, 2018. Check the license (California 20A21557, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tsung-Yun Tzeng
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 20A21557 CA
DO3188 ME
OP61337795 WA
Self-reported in NPPES; status is on the state search - Practice location
- 2300 California St Ste 103, San Francisco, CA 94115
- Phone
- (415) 600-3503
- Enumerated
- Mar 30, 2018
- Record last updated
- Oct 30, 2025
- Medicare enrollment
- Enrolled (PECOS I20240522000199); accepts Medicare assignment
- Medical or professional school
- Rowan University School Of Osteopathic Medicine, 2018
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 2300 California St Ste 103
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kelsey Attiq, FNPFamily Nurse Practitioner1194468470
- Lorena Hillman, MDFamily Medicine Physician1659445963
Verify Tsung-Yun Tzeng in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A21557Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average family medicine physician in 2024
286 Medicare Part D claims for 71 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Albuterol Sulfate Hfa13 claims
- Amlodipine Besylate11 claims
- Spiriva Respimat11 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
- Sutter Bay Medical FoundationSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tsung-Yun Tzeng among 17,133 family medicine physician records in California
Tsung-Yun Tzeng, DO is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 82% of them.
- NPI issued2018 · 82% of these records are older, 15% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2018 · median 2005 among the 10,652 with a school on file
- Record last updated2025 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Family Medicine Physician providers in California
There are 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in San Francisco → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Payal Bhandari, M.D.San Francisco, CA 941151710922935
- Eduardo Dolhun, MDSan Francisco, CA 941151548328214
- Jeffrey Draisin, M.D.San Francisco, CA 941151356362883
- Arkady Gendelman, M.D.San Francisco, CA 941151104839620
- Lorena Hillman, MDSan Francisco, CA 941151659445963
- Sheena Kumar, MDSan Francisco, CA 941151346314663
- Alex Lin, MDSan Francisco, CA 941151639257298
- Robert Mitchell, MDSan Francisco, CA 941151871527523
Common questions
What is Tsung-Yun Tzeng, DO's NPI number?
Tsung-Yun Tzeng, DO's National Provider Identifier (NPI) is 1790281715, issued on Mar 30, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Tsung-Yun Tzeng, DO located?
The NPPES record lists a practice address at 2300 California St Ste 103, San Francisco, CA, 94115. Phone: (415) 600-3503. Providers update this record themselves, so call before visiting.
How can I verify Tsung-Yun Tzeng, DO's license?
NPPES lists California license number 20A21557, 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 Tsung-Yun Tzeng, DO prescribe under Medicare Part D?
In 2024, Tsung-Yun Tzeng, DO had 286 Medicare Part D claims for 71 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.