Dr. Thomas Thong Huu Nguyen, MD
- Medicare services, 2024
- 1,079
- Medicare patients, 2024
- 507
- Part D claims, 2024
- 1,196
- MIPS score, 2024
- 100
- Hospital affiliations
- 1
- Practice address
- 12565 Hesperia Rd, Victorville, CA 92395
- Practice phone
- Call (760) 881-3377
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
The Gastro Group, Inc.
Victorville, California
Find Dr. Nguyen's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Thomas Thong Huu Nguyen is a gastroenterologist in Victorville, California
Dr. Nguyen practices at The Gastro Group, Inc. in Victorville, California.
Dr. Nguyen's NPI, 1215126800, was assigned on October 18, 2007. Dr. Nguyen graduated from UMass Chan Medical School in 2003. Dr. Nguyen holds California license A90332.
- NPI
- 1215126800NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6901967694
- NPI enumeration date
- October 18, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (760) 881-3377
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas Thong Huu Nguyen practices at The Gastro Group, Inc. in Victorville, California
Dr. Nguyen's primary practice is The Gastro Group, Inc., at 12565 Hesperia Rd, Victorville, CA 92395 in San Bernardino County. The practice phone is (760) 881-3377.
- The Gastro Group, Inc.12565 Hesperia Rd, Victorville, CA 92395 · San Bernardino CountyPhone(760) 881-3377
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Thomas Thong Huu Nguyen is affiliated with 3 sites of care and 1 medical group
Dr. Nguyen's primary practice is The Gastro Group, Inc. in Victorville, California. Dr. Nguyen is also affiliated with Providence St. Mary Medical Center. The medical group on file is The Gastro Group, Inc. Dmand AI also links Dr. Nguyen to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Thomas Thong Huu Nguyen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nguyen practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| The Gastro Group, Inc. | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Thomas Thong Huu Nguyen is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Nguyen's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Nguyen is licensed in California.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
Clinical focus
Dmand AI lists acid reflux, chronic inflammatory bowel disease (IBD), cirrhosis of the liver, gastrointestinal bleeding and irritable bowel syndrome (IBS) among the conditions Dr. Nguyen treats.
Gastroenterologists near Dr. Nguyen
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Thomas Thong Huu Nguyen billed Medicare for 1,079 services in 2024
CMS data shows 1,079 Medicare services from Dr. Nguyen across 16 procedure codes in 2024, for 507 Medicare patients. Medicare paid $102,536 for them.
Dr. Nguyen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6392024: 75618%
- Surgery
- 2023: 2172024: 27527%
- Other services
- 2023: 472024: 482%
Where Dr. Nguyen's Medicare services took place, 2024
- In an office31129%
- In a facility76871%
Dr. Nguyen compared with the California median for gastroenterologists, 2024
- Dr. Nguyen
- California median
- Medicare services
- 1,079vs 58684% above
- Medicare patients
- 507vs 30268% above
- Part D claims
- 1,082vs 3802.8 times
Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.
Dr. Nguyen's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Nguyen?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Nguyen and other gastroenterologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas Thong Huu Nguyen treated 507 Medicare patients in 2024, average age 71
CMS counts 507 Medicare patients who saw Dr. Nguyen in 2024. The largest group is 65 to 74, with 231 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 43% are also on Medicaid. Their average risk score is 2.09, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Nguyen's median patient age at 62, with 59% women.
Dr. Nguyen's Medicare patients by age, 2024
Dr. Nguyen's Medicare patients by sex, 2024
- Women29959%
- Men20841%
Chronic conditions among Dr. Nguyen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes53%
- Arthritis51%
- Chronic kidney disease42%
- Heart failure37%
- Ischemic heart disease37%
- Mood disorders32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Nguyen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women59%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Thomas Thong Huu Nguyen wrote 1,196 Medicare Part D claims in 2024
In 2024, Dr. Nguyen wrote 1,196 Medicare Part D claims for 360 patients. 90% of them were for generic drugs. CMS names the drug for 1,082 of them, across 18 drugs with 11 or more claims each, at $60,905 in total drug cost. In 2023, CMS named 1,203 claims across 19 drugs.
Dr. Nguyen's Part D claims by kind of drug, 2024
- Generic1,075 claims90%
- Brand-name121 claims10%
Dr. Nguyen's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Nguyen's Part D claims, 2024
- Antibiotics1%15 of 1,196 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,2032024: 1,08210%
Drugs named by CMS: 18 in 2024, 19 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Thomas Thong Huu Nguyen scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Nguyen for performance year 2024, reported as part of a group. Dr. Nguyen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 130 procedures of colonoscopy by Dr. Nguyen, more than 86% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Nguyen's MIPS scores, performance year 2024
- 100of 100Final score
- 92.8of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 78of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Nguyen ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 83rd percentile134 procedures
- Colonoscopy
- 86th percentile130 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Thomas Thong Huu Nguyen received $10,186 in industry payments from 2016 to 2025
CMS Open Payments shows 549 general payments to Dr. Nguyen from 35 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $3,466.
General payments to Dr. Nguyen by program year, 2016 to 2025
Companies that paid Dr. Nguyen the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Thomas Thong Huu Nguyen graduated from UMass Chan Medical School
Dr. Nguyen graduated from UMass Chan Medical School in 2003.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Thomas Thong Huu Nguyen accepts plans from 12 insurance carriers
Dr. Nguyen is in network with 12 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- Alliant Health Plans
- Blue Cross and Blue Shield of Kansas City
- +4 more carriersWith a free account
Plan types Dr. Nguyen accepts, by number of carriers
- PPO8
- Medicare7
- HMO5
- EPO3
- POS3
Source: Dmand AI Insurance Network Data
Sources for Dr. Thomas Thong Huu Nguyen's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Thomas Thong Huu Nguyen
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Thomas Thong Huu Nguyen's NPI number?
Dr. Thomas Thong Huu Nguyen's NPI number is 1215126800. It was assigned on October 18, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas Thong Huu Nguyen?
Dr. Thomas Thong Huu Nguyen is a gastroenterologist in Victorville, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Thomas Thong Huu Nguyen practice?
Dr. Nguyen practices at 12565 Hesperia Rd, Victorville, CA 92395. Dr. Nguyen's primary practice is The Gastro Group, Inc. in Victorville, California. Dmand AI also links Dr. Nguyen to 1 group practice or clinic.
What is Dr. Thomas Thong Huu Nguyen's office phone number?
The practice phone on file for Dr. Nguyen is (760) 881-3377.
What is Dr. Thomas Thong Huu Nguyen's medical license number?
Dr. Nguyen holds California license A90332.
Which hospitals is Dr. Thomas Thong Huu Nguyen affiliated with?
Dr. Nguyen is affiliated with Providence St. Mary Medical Center.
What medical group is Dr. Thomas Thong Huu Nguyen part of?
Dr. Nguyen is linked to The Gastro Group, Inc.
Does Dr. Thomas Thong Huu Nguyen accept Medicare?
Yes. CMS data shows Dr. Nguyen billed Medicare for 1,079 services in 2024, and Dr. Nguyen accepts Medicare assignment.
What is Dr. Thomas Thong Huu Nguyen's MIPS score?
Dr. Nguyen's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
How many Medicare patients does Dr. Thomas Thong Huu Nguyen see?
CMS counts 507 Medicare patients who saw Dr. Nguyen in 2024, with an average age of 71.
Show 6 more questionsShow fewer questions
What services does Dr. Thomas Thong Huu Nguyen bill to Medicare?
In 2024, Dr. Nguyen's most billed Medicare services were hospital inpatient care (99232), office visit, established patient (99213) and hospital inpatient care (99223).
Where did Dr. Thomas Thong Huu Nguyen go to medical school?
Dr. Nguyen graduated from UMass Chan Medical School in 2003.
What drugs does Dr. Thomas Thong Huu Nguyen prescribe most?
In 2024 Medicare Part D data, Dr. Nguyen's most prescribed drugs by claims were Pantoprazole Sodium, Dicyclomine HCl and Peg 3350-Electrolyte.
Has Dr. Thomas Thong Huu Nguyen received payments from drug or device companies?
CMS Open Payments shows $10,186 in general payments to Dr. Nguyen from 35 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Thomas Thong Huu Nguyen been practicing?
Dr. Nguyen graduated from medical school in 2003, 23 years ago.
What insurance does Dr. Thomas Thong Huu Nguyen accept?
Dr. Nguyen is in network with 12 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
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