Chase R. Thorson, MD
Emergency Medicine Physician · Visalia, CA
Chase R. Thorson, MD is an emergency medicine physician with a practice address in Visalia, California, and NPI 1285194522, issued on Mar 22, 2019. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Chase R. Thorson
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- D0100870 MD
Self-reported in NPPES; status is on the state search - Practice location
- 400 W Mineral King Ave, Visalia, CA 93291
- Phone
- (559) 624-2000
- Enumerated
- Mar 22, 2019
- Record last updated
- Apr 7, 2026
- Medicare enrollment
- Enrolled (PECOS I20240814000045); accepts Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 2019
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 400 W Mineral King Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ahmad Aboaziza, M.D.Neonatal-Perinatal Medicine Physician1932442944
- Evelyn Abrami, D.O.Student in an Organized Health Care Education/Training Program1831892066
- Delaney Aguilar, DOEmergency Medicine Physician1598352510
- Mohammed Asfhan Ahmed, DOInternal Medicine Physician1588161483
- Peter Aijian, M.D.Emergency Medicine Physician1518978287
- Akram Al-Saber, MDStudent in an Organized Health Care Education/Training Program1306784608
Verify Chase R. Thorson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average emergency medicine physician in 2024
36 Medicare Part D claims for 28 beneficiaries, against an average of 226 among the 54,106 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 one group practice
- Cep America LLCBaltimore, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Chase R. Thorson among 7,751 emergency medicine physician records in California
Chase R. Thorson, MD is one of 7,751 emergency 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 2019, is newer than 85% of them.
- NPI issued2019 · 85% of these records are older, 12% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2019 · median 2011 among the 4,560 with a school on file
- Record last updated2026 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
71 emergency medicine physician records list a practice address in Visalia
They are 71 of the 4,225 NPPES records with a practice address in Visalia, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Visalia → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Peter Aijian, M.D.Visalia, CA 932911518978287
- Steven Carstens, D.OVisalia, CA 932911093826562
- Xi Damrell, M.D.Visalia, CA 932911154490647
- Carolyn Fleming, M.D.Visalia, CA 932911255342945
- Sidney Frank, M.D.Visalia, CA 932911740291434
- Thomas Gray, M.D.Visalia, CA 932911376654533
- John Hipskind, M.D.Visalia, CA 932911730190430
- Steven Larsen, M.D.Visalia, CA 932911508877200
Common questions
What is Chase R. Thorson, MD's NPI number?
Chase R. Thorson, MD's National Provider Identifier (NPI) is 1285194522, issued on Mar 22, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Chase R. Thorson, MD located?
The NPPES record lists a practice address at 400 W Mineral King Ave, Visalia, CA, 93291. Phone: (559) 624-2000. Providers update this record themselves, so call before visiting.
How can I verify Chase R. Thorson, MD's license?
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 Chase R. Thorson, MD prescribe under Medicare Part D?
In 2024, Chase R. Thorson, MD had 36 Medicare Part D claims for 28 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.