Thomas Thong Nguyen, M.D.,
NPI 1215126800 · Gastroenterology Physician · Victorville, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Thong Nguyen, M.D., is a Gastroenterology Physician provider in Victorville, CA (NPI 1215126800).
Provider details
- NPI number
- 1215126800
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.,
- Sex
- Male
- Sole proprietor
- Yes
- License
- A90332 (CA)
Specialties & taxonomies
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
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,079 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 319 | $79 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 170 | $94 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 120 | $172 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 93 | $107 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 74 | $115 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 427 | 111 |
| Dicyclomine Hcl | 139 | 38 |
| Sodium Chloride/Nahco3/Kcl/Pegbrand: Peg 3350-Electrolyte | 127 | 121 |
| Sucralfate | 63 | 29 |
| Lactulose | 61 | 22 |
| Omeprazole | 46 | 27 |
| Linaclotidebrand: Linzess | 31 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,350 across 73 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
Registry dates
- Enumerated
- 2007-10-18
- Last updated
- 2015-03-11
Frequently asked questions
- What is Thomas Thong Nguyen's NPI number?
- Thomas Thong Nguyen's National Provider Identifier (NPI) is 1215126800, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Thong Nguyen's specialty?
- Thomas Thong Nguyen is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Thong Nguyen located?
- Thomas Thong Nguyen's practice location on file with NPPES is 12595 Hesperia Rd Ste 101, Victorville, CA 92395-5882.
- What is Thomas Thong Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Thomas Thong Nguyen is (760) 881-3377.
- Does Thomas Thong Nguyen accept Medicare?
- Thomas Thong Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Thong Nguyen's NPI active?
- Yes — Thomas Thong Nguyen's NPI (1215126800) is active in the NPPES registry as of the last update on 2015-03-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.