DR. TOMMY YU-DO YEN M.D.
NPI 1053421958
Internal Medicine - Gastroenterology in Santee, CA

Q: What is Tommy Yen's NPI number?

The NPI number for Tommy Yen is 1053421958. It was assigned to this individual provider in the NPPES registry on August 30, 2006.

Q: What is Tommy Yen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Tommy Yen was last updated on February 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since August 30, 2006PECOS EnrolledAccepts Medicare Assignment

9456 CUYAMACA ST STE 102, SANTEE, CA 92071(619) 588-4074(619) 588-4004 Get Directions Write a Review

NPPES record last updated: February 10, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Dr. Tommy Yu-do Yen M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. TOMMY YU-DO YEN M.D. (NPI 1053421958) is an individual gastroenterology provider in Santee, California, licensed in California (A060085) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Essentia Health St Joseph's Medical Center, and maintains a secondary practice location in San Diego.

NPPES Registry Identity

NPI1053421958

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameDR. TOMMY YU-DO YENCredential: M.D.

Location Address9456 CUYAMACA ST STE 102Santee, CA 92071-5919

Mailing Address9456 Cuyamaca St Ste 102Santee, CA 92071-5919 · (619) 588-4074 · Fax (619) 588-4004

Phone(619) 588-4074

Fax(619) 588-4004

Sole ProprietorNo

Medical School CMSOtherGraduated 1994

Enumeration DateAugust 30, 2006

Last NPPES UpdateFebruary 10, 2026

NPPES CertifiedFebruary 10, 2026

✔ NPI 1053421958 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in CA · A060085

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

Also ListedInternal MedicineTaxonomy 207R00000X · License A060085 (CA)

Also ListedInternal Medicine · HepatologyTaxonomy 207RI0008X · License A060085 (CA)

9456 CUYAMACA ST STE 102, Santee, CA 92071

Open in Google Maps ↗

Secondary Practice Location 1

Location 16699 Alvarado Rd Ste 2301San Diego, CA 92120-5241 · Phone (619) 588-4074 ext. 0 · Fax (619) 588-4004

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Tommy Yu-do Yen M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID547357592

PECOS Enrollment IDI20071107000593, I20260427000204

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 10

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Injection, midazolam hydrochloride, per 1 mg J2250

Midazolam hydrochloride is a medication injected to help you relax or sleep before surgery or certain medical procedures. It works by calming the brain and nerves. It's given in small doses, measured in milligrams (mg).

548 services99 patients

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 monito G0500

Moderate sedation is a method where a physician uses medication to help you relax during a gastrointestinal endoscopy. An independent trained observer will be present to monitor your vital signs and ensure your safety throughout the procedure. It's a common and safe practice.

103 services100 patients

Injection, fentanyl citrate, 0.1 mg J3010

Fentanyl citrate is a potent pain medication administered via injection. The 0.1 mg dosage is used to manage severe pain conditions. It works by blocking pain signals to the brain. It's crucial to follow the dosage instructions to prevent potential side effects.

90 services85 patients

Use of a drug to induce depression of consciousness by physician performing a procedure, each additional 15 minutes 99153

This service involves a physician administering medication to lower your consciousness during a procedure. It's done for your comfort and safety. The drug's effects last about 15 minutes, so additional doses may be given as needed.

74 services63 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

29 services29 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

20 services20 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Essentia Health St Joseph's Medical Center

Acute Care Hospitals · Brainerd, MN

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number240075

Location523 North 3rd StreetBrainerd, MN 56401 · Crow Wing County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92071 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$140.22 typical visit price

range $62.10 – $184.71

Typical copayment $35.05 (range $15.52 – $46.17)

Most-billed visit code 99204

Established Patient

$108.42 typical visit price

range $20.62 – $151.42

Typical copayment $27.10 (range $5.15 – $37.85)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ANANTHRAM POTTIPATI REDDY M.D.

Internal Medicine (Gastroenterology)

9456 CUYAMACA ST STE 102
SANTEE, CA 92071

San Diego County (619) 588-4074

DR. JOSEPH BATTULA REDDY M.D.

Internal Medicine (Gastroenterology)

9456 CUYAMACA ST STE 102
SANTEE, CA 92071

San Diego County (619) 588-4074

ADVANCED ENDOSCOPY CONSULTANTS

Internal Medicine (Gastroenterology)

9456 CUYAMACA ST STE 102
SANTEE, CA 92071

San Diego County (619) 588-4074

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Tommy Yen's NPI number?

The NPI number for Tommy Yen is 1053421958. It was assigned to this individual provider in the NPPES registry on August 30, 2006.

Where is Tommy Yen located?

Tommy Yen practices at 9456 Cuyamaca St Ste 102, Santee, CA 92071. The listed phone number is (619) 588-4074.

What is Tommy Yen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Tommy Yen enrolled in Medicare?

Yes. Tommy Yen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Tommy Yen affiliated with any hospitals?

According to CMS data, Tommy Yen is affiliated with Essentia Health St Joseph's Medical Center.

When was this NPI record last updated?

The NPPES record for Tommy Yen was last updated on February 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.