Tommy Yen, M.D.
NPI 1053421958 · Gastroenterology Physician · Santee, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tommy Yen, M.D. is a Gastroenterology Physician provider in Santee, CA (NPI 1053421958).
Provider details
- NPI number
- 1053421958
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A060085 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
286 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Moderate Sedation Services Provided By the Same Physician Or Other Qualified Health Care Professional Performing a Gastrointestinal Endoscopic Service That Sedation Supports, Requiring the Presence of an Independent Trained Observer to Assist in the MonitoG0500 | 103 | $66 |
| Use of a Drug to Induce Depression of Consciousness By Physician Performing a Procedure, Each Additional 15 Minutes99153 | 74 | $13 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 29 | $494 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 20 | $460 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 17 | $378 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 54 | 31 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 29 | 29 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 19 | 19 |
| Pantoprazole Sodium | 15 | 11 |
| Lipase/Protease/Amylasebrand: Zenpep | 14 | — |
| Mesalamine | 13 | — |
| Famotidine | 12 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,113 across 11 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 6699 Alvarado Rd Ste 2301San Diego, CA 92120-5241Phone: (619) 588-4074Fax: (619) 588-4004
Registry dates
- Enumerated
- 2006-08-30
- Last updated
- 2026-02-10
- Certified
- 2026-02-10
Frequently asked questions
- What is Tommy Yen's NPI number?
- Tommy Yen's National Provider Identifier (NPI) is 1053421958, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tommy Yen's specialty?
- Tommy Yen is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Tommy Yen located?
- Tommy Yen's practice location on file with NPPES is 9456 Cuyamaca St Ste 102, Santee, CA 92071-5919.
- What is Tommy Yen's phone number?
- The practice phone number listed in the NPPES registry for Tommy Yen is (619) 588-4074.
- Does Tommy Yen accept Medicare?
- Tommy Yen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tommy Yen's NPI active?
- Yes — Tommy Yen's NPI (1053421958) is active in the NPPES registry as of the last update on 2026-02-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.