Chieh-Yu Chen, MD
Internal Medicine Physician · San Francisco, CA
Chieh-Yu Chen, MD is an internal medicine physician with a practice address in San Francisco, California, and NPI 1346604006, issued on Apr 8, 2016. Check the license (California C197005, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Chieh-Yu Chen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- C197005 CA
Self-reported in NPPES; status is on the state search - Practice location
- 350 Rhode Island St, San Francisco, CA 94103
- Phone
- (415) 826-7575
- Enumerated
- Apr 8, 2016
- Record last updated
- Jan 22, 2025
- Medicare enrollment
- Enrolled (PECOS I20241011003284); accepts Medicare assignment
- Medical or professional school
- University Of Kentucky College Of Medicine, 2016
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 350 Rhode Island St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Chieh-Yu Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C197005Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
21% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,523 Medicare Part D claims for 276 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 48 claims were for opioids.
Most prescribed
- Atorvastatin Calcium178 claims
- Levothyroxine Sodium136 claims
- Losartan Potassium126 claims
- Rosuvastatin Calcium121 claims
- Amlodipine Besylate80 claims
- Omeprazole79 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.
Industry payments in 2024: $99.22
1 payment: food and beverage; the largest payer was E.R. Squibb & Sons, L.L.C. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
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).
Chieh-Yu Chen among 17,696 internal medicine physician records in California
Chieh-Yu Chen, MD 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 2016, is newer than 79% of them.
- NPI issued2016 · 79% of these records are older, 19% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2016 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 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).
1,318 internal medicine physician records list a practice address in San Francisco
They are 1,318 of the 38,143 NPPES records with a practice address in San Francisco, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Francisco → Internal Medicine Physician nationwide →
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- Mark Sears, MDSan Francisco, CA 941031134169105
- Laurene Spencer, MDSan Francisco, CA 941031114064342
Common questions
What is Chieh-Yu Chen, MD's NPI number?
Chieh-Yu Chen, MD's National Provider Identifier (NPI) is 1346604006, issued on Apr 8, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Chieh-Yu Chen, MD located?
The NPPES record lists a practice address at 350 Rhode Island St, San Francisco, CA, 94103. Phone: (415) 826-7575. Providers update this record themselves, so call before visiting.
How can I verify Chieh-Yu Chen, MD's license?
NPPES lists California license number C197005, 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 Chieh-Yu Chen, MD prescribe under Medicare Part D?
In 2024, Chieh-Yu Chen, MD had 2,523 Medicare Part D claims for 276 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.