Tommy Yu-Do Yen, M.D.
Gastroenterology Physician · Santee, CA
Tommy Yu-Do Yen, M.D. is a gastroenterology physician with a practice address in Santee, California, and NPI 1053421958, issued on Aug 30, 2006. Check the license (California A060085, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tommy Yu-Do Yen
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A060085 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9456 Cuyamaca St Ste 102, Santee, CA 92071
- Phone
- (619) 588-4074
- Enumerated
- Aug 30, 2006
- Record last updated
- Feb 10, 2026
- Fax
- (619) 588-4004
- Medicare enrollment
- Enrolled (PECOS I20260427000204); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 9456 Cuyamaca St Ste 102
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ananthram Reddy, M.D.Gastroenterology Physician1124014923
- Joseph Reddy, M.D.Gastroenterology Physician1245215391
Verify Tommy Yu-Do Yen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A060085Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% fewer Medicare Part D claims than the average gastroenterology physician in 2024
298 Medicare Part D claims for 172 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Omeprazole54 claims
- Gavilyte-C29 claims
- Gavilyte-G19 claims
- Pantoprazole Sodium15 claims
- Zenpep14 claims
- Mesalamine13 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: $1,113.30
11 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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.
Bills Medicare through 2 group practices
- Sharp Rees-Stealy Medical Group IncSan Diego, CA
- St Josephs Medical CenterBrainerd, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tommy Yu-Do Yen among 2,140 gastroenterology physician records in California
Tommy Yu-Do Yen, M.D. is one of 2,140 gastroenterology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 48% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1994 · median 2002 among the 1,538 with a school on file
- Record last updated2026 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Santee → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Ananthram Reddy, M.D.Santee, CA 920711124014923
- Joseph Reddy, M.D.Santee, CA 920711245215391
- Alan Larson, MDPoway, CA 920641396755831
- Michael McTigue, M.D.San Marcos, CA 920781942444500
- Rafael Cuellar, M.D.Vista, CA 920811992863328
- Hellen Chiao, MDOceanside, CA 920561154681435
- Christopher Devereaux, M.D.Oceanside, CA 920561376512848
- Michael Kurtz, M.D.Oceanside, CA 920561487623955
Common questions
What is Tommy Yu-Do Yen, M.D.'s NPI number?
Tommy Yu-Do Yen, M.D.'s National Provider Identifier (NPI) is 1053421958, issued on Aug 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Tommy Yu-Do Yen, M.D. located?
The NPPES record lists a practice address at 9456 Cuyamaca St Ste 102, Santee, CA, 92071. Phone: (619) 588-4074. Providers update this record themselves, so call before visiting.
How can I verify Tommy Yu-Do Yen, M.D.'s license?
NPPES lists California license number A060085, 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 Tommy Yu-Do Yen, M.D. prescribe under Medicare Part D?
In 2024, Tommy Yu-Do Yen, M.D. had 298 Medicare Part D claims for 172 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.