Katya Lyn Trousset, DO
Emergency Medicine Physician · Stockton, CA
Katya Lyn Trousset, DO is an emergency medicine physician with a practice address in Stockton, California, and NPI 1093455503, issued on Mar 31, 2022. Check the license (California 20A21697, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Katya Lyn Trousset
- Credential
- DO
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 20A21697 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1800 N California St, Stockton, CA 95204
- Phone
- (209) 547-7146
- Enumerated
- Mar 31, 2022
- Record last updated
- Aug 11, 2025
- Medicare enrollment
- Enrolled (PECOS I20250716001702); accepts Medicare assignment
- Medical or professional school
- Pacific Nw Un Of Hs, Col Of Osteopathic Medicine, 2022
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 1800 N California St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nariman AbediniPediatrics Physician1780260190
- Najiba Afzal, MDStudent in an Organized Health Care Education/Training Program1033978572
- Khaja AhmedPharmacist1982241709
- Nabeel Ahmed, MDStudent in an Organized Health Care Education/Training Program1083552780
- Savannah AibayeStudent in an Organized Health Care Education/Training Program1619508553
Verify Katya Lyn Trousset in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A21697Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average emergency medicine physician in 2024
80 Medicare Part D claims for 56 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Cephalexin11 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 2 group practices
- San Francisco Physicians International Medical Group IncStockton, CA
- Swope Medical Group IncGrass Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katya Lyn Trousset among 7,751 emergency medicine physician records in California
Katya Lyn Trousset, DO 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 2022, is newer than 95% of them.
- NPI issued2022 · 95% of these records are older, 2% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2022 · median 2011 among the 4,560 with a school on file
- Record last updated2025 · 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).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Stockton → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Denise Ammon, M.D.Stockton, CA 952041518222876
- Jason Darr, DOStockton, CA 952041699237099
- Douglas Demartinis, MDStockton, CA 952041699797993
- Anatoliy Goltser, MDStockton, CA 952041780903203
- Zachary Haberman, M.D.Stockton, CA 952041831553171
- Samuel Kaplan, MDStockton, CA 952041588168793
- Justin Leach, DOStockton, CA 952041124580527
- Louis Marquet, D.O.Stockton, CA 952041083976286
Common questions
What is Katya Lyn Trousset, DO's NPI number?
Katya Lyn Trousset, DO's National Provider Identifier (NPI) is 1093455503, issued on Mar 31, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Katya Lyn Trousset, DO located?
The NPPES record lists a practice address at 1800 N California St, Stockton, CA, 95204. Phone: (209) 547-7146. Providers update this record themselves, so call before visiting.
How can I verify Katya Lyn Trousset, DO's license?
NPPES lists California license number 20A21697, 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 Katya Lyn Trousset, DO prescribe under Medicare Part D?
In 2024, Katya Lyn Trousset, DO had 80 Medicare Part D claims for 56 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.