Chih-Wen Shi, MD
Family Medicine Physician · San Marcos, CA
Chih-Wen Shi, MD is a family medicine physician with a practice address in San Marcos, California, and NPI 1982611372, issued on Aug 1, 2006. Check the license (California A64049, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Chih-Wen Shi
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A64049 CA
Self-reported in NPPES; status is on the state search - Practice location
- 150 Valpreda RD, San Marcos, CA 92069
- Phone
- (760) 736-6700
- Enumerated
- Aug 1, 2006
- Record last updated
- Dec 2, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (760) 736-8740
- Medicaid ID
- 00A640490 CA
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 150 Valpreda RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jannah Alaoui, CNM, RNAdvanced Practice Midwife1689908113
- Wais Alemi, MDFamily Medicine Physician1427305242
- Leon Altamirano, PSY.D.Psychologist1619271517
- Blanca Arias, LCSWClinical Social Worker1033223649
- Lynda Ariella, PHDClinical Psychologist1073518965
- Maria BanuelosCase Manager/Care Coordinator1720280589
Verify Chih-Wen Shi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A64049Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average family medicine physician in 2024
85 Medicare Part D claims for 16 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
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.
Chih-Wen Shi among 17,133 family medicine physician records in California
Chih-Wen Shi, MD 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 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2009 · 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).
47 family medicine physician records list a practice address in San Marcos
They are 47 of the 1,985 NPPES records with a practice address in San Marcos, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in San Marcos → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Wais Alemi, MDSan Marcos, CA 920691427305242
- Oksana Hirniak, D.O.San Marcos, CA 920691891750345
- Cheng Lee, M.D.San Marcos, CA 920691598098345
- Julie Matias, D.O.San Marcos, CA 920691083094510
- Kathryn McHenry, D.O.San Marcos, CA 920691326458373
- Devarshi Nath, MDSan Marcos, CA 920691275630618
- Peter Novota, M.D.San Marcos, CA 920691124132394
- Isela Penunuri, MDSan Marcos, CA 920691548295439
Common questions
What is Chih-Wen Shi, MD's NPI number?
Chih-Wen Shi, MD's National Provider Identifier (NPI) is 1982611372, issued on Aug 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Chih-Wen Shi, MD located?
The NPPES record lists a practice address at 150 Valpreda RD, San Marcos, CA, 92069. Phone: (760) 736-6700. Providers update this record themselves, so call before visiting.
How can I verify Chih-Wen Shi, MD's license?
NPPES lists California license number A64049, 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 Chih-Wen Shi, MD prescribe under Medicare Part D?
In 2024, Chih-Wen Shi, MD had 85 Medicare Part D claims for 16 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.