Thomas Thanh Tran, MD
Internal Medicine Physician · Corona, CA
Thomas Thanh Tran, MD is an internal medicine physician with a practice address in Corona, California, and NPI 1710972997, issued on Sep 14, 2005. Check the license (California A85242, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thomas Thanh Tran
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A85242 CA
Self-reported in NPPES; status is on the state search - Practice location
- 800 S Main St, Corona, CA 92882
- Phone
- (951) 278-5590
- Enumerated
- Sep 14, 2005
- Record last updated
- Dec 8, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (951) 272-9924
- Medicare enrollment
- Enrolled (PECOS I20050124000692); 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 800 S Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Charles Addo-Yobo, DOEmergency Medicine Physician1821625955
- James Ahn, M.D.Anesthesiology Physician1588641963
- Julie Ahn, PA-CPhysician Assistant1346802543
- Thomas Assali, DOInternal Medicine Physician1598225062
- Cynthia Bailey, P.A.-CPhysician Assistant1316053036
- David Bear, M.D.Emergency Medicine Physician1114033883
Verify Thomas Thanh Tran in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A85242Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
152 Medicare Part D claims for 71 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin-Clavulanate Potass13 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 one group practice
- Inpatient Specialists OF California PCSan Bernardino, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas Thanh Tran among 17,696 internal medicine physician records in California
Thomas Thanh Tran, MD 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2000 · 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).
52 internal medicine physician records list a practice address in Corona
They are 52 of the 3,731 NPPES records with a practice address in Corona, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Corona → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Thomas Assali, DOCorona, CA 928821598225062
- Patrick Bonaparte, M.D.Corona, CA 928821508260340
- Christos Bovetas, M.D.Corona, CA 928821487740262
- Adriane DullCorona, CA 928821538665773
- Farnoosh Farshidi, M.D.Corona, CA 928821841722899
- Ramesh Gupta, M.D.Corona, CA 928821255527685
- Mowbray Hagan, MDCorona, CA 928821235145590
- Imran Hasnain, MDCorona, CA 928821003850553
Common questions
What is Thomas Thanh Tran, MD's NPI number?
Thomas Thanh Tran, MD's National Provider Identifier (NPI) is 1710972997, issued on Sep 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Thanh Tran, MD located?
The NPPES record lists a practice address at 800 S Main St, Corona, CA, 92882. Phone: (951) 278-5590. Providers update this record themselves, so call before visiting.
How can I verify Thomas Thanh Tran, MD's license?
NPPES lists California license number A85242, 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 Thomas Thanh Tran, MD prescribe under Medicare Part D?
In 2024, Thomas Thanh Tran, MD had 152 Medicare Part D claims for 71 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.