Trevor Tsay, MD
Family Medicine Physician · Orange, CA
Trevor Tsay, MD is a family medicine physician with a practice address in Orange, California, and NPI 1760944110, issued on Apr 4, 2019. Check the license (California 180608, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Trevor Tsay
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 180608 CA
Self-reported in NPPES; status is on the state search - Practice location
- 438 E Katella Ave Ste B, Orange, CA 92867
- Phone
- (951) 412-6067
- Enumerated
- Apr 4, 2019
- Record last updated
- Nov 3, 2023
- Medicare enrollment
- Enrolled (PECOS I20241001000962); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 438 E Katella Ave Ste B
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jacqueline Eubany, M.D.Clinical Cardiac Electrophysiology Physician1912986944
Verify Trevor Tsay in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 180608Check 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 family medicine physician in 2024
148 Medicare Part D claims for 53 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Atorvastatin Calcium15 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: $243.06
2 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 55,478 providers of this specialty with any payment received $902.55 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.
Trevor Tsay among 17,133 family medicine physician records in California
Trevor Tsay, 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 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 · 62% of these records are
- Graduated2019 · median 2005 among the 10,652 with a school on file
- Record last updated2023 · 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).
106 family medicine physician records list a practice address in Orange
They are 106 of the 13,245 NPPES records with a practice address in Orange, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Orange → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Joey Asfahan, MDOrange, CA 928671639706211
- Rajnish Birla, MDOrange, CA 928671477627065
- James Burris, D.O.Orange, CA 928671811082415
- Salma Farukhi, MDOrange, CA 928671982966883
- Kasein Gonzalez, MDOrange, CA 928671700049459
- Christopher Holden, M.D.Orange, CA 928671306867460
- Rolf Knapp, D.OOrange, CA 928671053355982
- Laura Mackenzie-Tangredi, D.O.Orange, CA 928671679532956
Common questions
What is Trevor Tsay, MD's NPI number?
Trevor Tsay, MD's National Provider Identifier (NPI) is 1760944110, issued on Apr 4, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Trevor Tsay, MD located?
The NPPES record lists a practice address at 438 E Katella Ave Ste B, Orange, CA, 92867. Phone: (951) 412-6067. Providers update this record themselves, so call before visiting.
How can I verify Trevor Tsay, MD's license?
NPPES lists California license number 180608, 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 Trevor Tsay, MD prescribe under Medicare Part D?
In 2024, Trevor Tsay, MD had 148 Medicare Part D claims for 53 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.