Theresa Win
Internal Medicine Physician · San Bernardino, CA
Theresa Win is an internal medicine physician with a practice address in San Bernardino, California, and NPI 1538401856, issued on Mar 25, 2013. Check the license (California A138793, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Theresa Win
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A138793 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1805 Medical Center Dr, San Bernardino, CA 92411
- Phone
- (909) 887-6333
- Enumerated
- Mar 25, 2013
- Record last updated
- Dec 23, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20170728001751); 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 1805 Medical Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jillian Allard, PA-CPhysician Assistant1134470446
- Debbie Bervel, MDEmergency Medicine Physician1932113107
- Janet ChangPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1811668817
- Michelle Fischer, RDRegistered Dietitian1750875266
- Megan Hall, MPH, RDRegistered Dietitian1518795905
- Nancy Hoang, PHARMD,Pharmacist1174751333
Verify Theresa Win in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A138793Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average internal medicine physician in 2024
131 Medicare Part D claims for 56 beneficiaries, against an average of 3,176 among the 108,855 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.
Bills Medicare through 2 group practices
- Department OF State HospitalsPatton, CA
- Southern California Permanente Medical GroupRiverside, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Theresa Win among 17,696 internal medicine physician records in California
Theresa Win 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 2013, is newer than 71% of them.
- NPI issued2013 · 71% of these records are older, 26% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2005 · 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).
58 internal medicine physician records list a practice address in San Bernardino
They are 58 of the 5,645 NPPES records with a practice address in San Bernardino, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Bernardino → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Wilson Gomer, MDSan Bernardino, CA 924111184656928
- Vinod Kaura, MDSan Bernardino, CA 924111225117328
- Romeo Rodriguez, M.D.San Bernardino, CA 924111336246685
- Nooshin Salehi, MDSan Bernardino, CA 924111053802470
- Hateem SiddiquiSan Bernardino, CA 924111487099669
- Amanjung SinghSan Bernardino, CA 924111043890981
- David Bolivar, M.D.San Bernardino, CA 924101801830609
- Cesia Garrido, MDSan Bernardino, CA 924101376120790
Common questions
What is Theresa Win's NPI number?
Theresa Win's National Provider Identifier (NPI) is 1538401856, issued on Mar 25, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Theresa Win located?
The NPPES record lists a practice address at 1805 Medical Center Dr, San Bernardino, CA, 92411. Phone: (909) 887-6333. Providers update this record themselves, so call before visiting.
How can I verify Theresa Win's license?
NPPES lists California license number A138793, 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 Theresa Win prescribe under Medicare Part D?
In 2024, Theresa Win had 131 Medicare Part D claims for 56 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.