Dr. Harry Nguyen, DO
- Medicare services, 2024
- 563
- Medicare patients, 2024
- 323
- Part D claims, 2024
- 447
- MIPS score, 2024
- 100
- Hospital affiliations
- 1
- Practice address
- 101 City Drive South, Orange, CA 92868
- Practice phone
- Call (714) 456-7890
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Nguyen's professional email, personal email and mobile number
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Dr. Harry Nguyen is a hepatology physician in Orange, California
Dr. Nguyen practices at UCI Health - Orange in Orange, California, part of UC Irvine.
Dr. Nguyen's NPI, 1003277930, was assigned on March 20, 2016. Dr. Nguyen graduated from Dr. Kiran C. Patel College of Osteopathic Medicine in 2016. Dr. Nguyen holds California license 20A21145.
- NPI
- 1003277930NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9133410491
- NPI enumeration date
- March 20, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (714) 456-7890
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Harry Nguyen practices at UCI Health - Orange in Orange, California
Dr. Nguyen's primary practice is UCI Health - Orange, at 101 City Drive South, Orange, CA 92868 in Orange County. The practice phone is (714) 456-7890.
- UCI Health - Orange101 City Drive South, Orange, CA 92868 · Orange CountyPhone(714) 456-7890
Source: Dmand AI Affiliation Data
Dr. Harry Nguyen is affiliated with 1 site of care and 1 medical group
Dr. Nguyen's primary practice is UCI Health - Orange in Orange, California, part of UC Irvine. The medical group on file is UCI Health Physicians.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Harry Nguyen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nguyen practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UCI Health - Orange | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Harry Nguyen is one of 41 hepatology physicians in California
Hepatology is Dr. Nguyen's primary specialty in the NPI Registry, under taxonomy code 207RI0008X. Dr. Nguyen is board certified in gastroenterology by the American Board of Internal Medicine. Dr. Nguyen is licensed in California.
Specialties and state licenses
- Hepatology, CaliforniaPrimary
Clinical focus
Dmand AI lists cirrhosis of the liver, colonoscopy, fatty liver and upper GI endoscopy among the conditions Dr. Nguyen treats.
Hepatology physicians near Dr. Nguyen
Counts of hepatology physicians 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. Harry Nguyen billed Medicare for 563 services in 2024
CMS data shows 563 Medicare services from Dr. Nguyen across 14 procedure codes in 2024, for 323 Medicare patients. Medicare paid $53,263 for them.
Dr. Nguyen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 162024: 5243175%
- Surgery
- 2023: 02024: 39
Where Dr. Nguyen's Medicare services took place, 2024
- In an office11020%
- In a facility45380%
Dr. Nguyen compared with the California median for hepatology physicians, 2024
- Dr. Nguyen
- California median
- Medicare services
- 563vs 31579% above
- Medicare patients
- 323vs 25825% above
- Part D claims
- 395vs 395Close to median
Medians across 37 hepatology physicians 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 hepatology physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Harry Nguyen treated 323 Medicare patients in 2024, average age 70
CMS counts 323 Medicare patients who saw Dr. Nguyen in 2024. The largest group is 65 to 74, with 151 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 49% are also on Medicaid. Their average risk score is 2.51, 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 59, with 52% women.
Dr. Nguyen's Medicare patients by age, 2024
Dr. Nguyen's Medicare patients by sex, 2024
- Women17855%
- Men14545%
Chronic conditions among Dr. Nguyen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Diabetes50%
- Chronic kidney disease35%
- Ischemic heart disease33%
- Osteoporosis28%
- Heart failure27%
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 59
Patient panel by sex, all payers
- Women52%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Harry Nguyen wrote 447 Medicare Part D claims in 2024
In 2024, Dr. Nguyen wrote 447 Medicare Part D claims for 119 patients. 55% of them were for generic drugs. CMS names the drug for 395 of them, across 11 drugs with 11 or more claims each, at $313,349 in total drug cost. In 2023, CMS named 13 claims across 1 drug.
Dr. Nguyen's Part D claims by kind of drug, 2024
- Generic244 claims55%
- Brand-name203 claims45%
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
- Antibiotics8%36 of 447 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: 132024: 3952938%
Drugs named by CMS: 11 in 2024, 1 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. Harry 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 through an alternative payment model (APM). Dr. Nguyen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Nguyen as offering telehealth. CMS counts 17 procedures of colonoscopy by Dr. Nguyen, more than 46% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Nguyen's MIPS scores, performance year 2024
- 100of 100Final score
- 83.7of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
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
- Colonoscopy
- 46th percentile17 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
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. Harry Nguyen received $1,264 in industry payments from 2017 to 2023
CMS Open Payments shows 17 general payments to Dr. Nguyen from 8 drug and device companies from 2017 to 2023. Food and beverage make up the largest share, 100% of the total. Gilead Sciences, Inc. paid the most, $803.
General payments to Dr. Nguyen by program year, 2017 to 2023
Companies that paid Dr. Nguyen the most, 2017 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Harry Nguyen graduated from Dr. Kiran C. Patel College of Osteopathic Medicine
Dr. Nguyen graduated from Dr. Kiran C. Patel College of Osteopathic Medicine in 2016.
- Medical school
- Board certified in gastroenterology
- Board certified in internal medicine
- Board certified in transplant hepatology
Source: Dmand AI Professional Profile Data
Dr. Harry Nguyen accepts plans from 4 insurance carriers
Dr. Nguyen is in network with 4 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- CMS Medicare
Plan types Dr. Nguyen accepts, by number of carriers
- Medicare4
- PPO3
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Harry 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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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. Harry 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. Harry Nguyen's NPI number?
Dr. Harry Nguyen's NPI number is 1003277930. It was assigned on March 20, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Harry Nguyen?
Dr. Harry Nguyen is a hepatology physician in Orange, California. The primary specialty in the NPI Registry is Hepatology Physician (taxonomy code 207RI0008X).
Where does Dr. Harry Nguyen practice?
Dr. Nguyen practices at 101 City Drive South, Orange, CA 92868. Dr. Nguyen's primary practice is UCI Health - Orange in Orange, California, part of UC Irvine.
What is Dr. Harry Nguyen's office phone number?
The practice phone on file for Dr. Nguyen is (714) 456-7890.
What is Dr. Harry Nguyen's medical license number?
Dr. Nguyen holds California license 20A21145.
Which hospitals is Dr. Harry Nguyen affiliated with?
Dr. Nguyen practices at UCI Health - Orange in Orange, California.
What medical group is Dr. Harry Nguyen part of?
Dr. Nguyen is linked to UCI Health Physicians.
Does Dr. Harry Nguyen accept Medicare?
Yes. CMS data shows Dr. Nguyen billed Medicare for 563 services in 2024, and Dr. Nguyen accepts Medicare assignment.
Does Dr. Harry Nguyen offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Nguyen as offering telehealth services.
What is Dr. Harry Nguyen's MIPS score?
Dr. Nguyen's MIPS final score for performance year 2024 is 100 out of 100, reported through an alternative payment model (APM).
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How many Medicare patients does Dr. Harry Nguyen see?
CMS counts 323 Medicare patients who saw Dr. Nguyen in 2024, with an average age of 70.
Is Dr. Harry Nguyen board certified?
Yes. Dr. Nguyen is board certified in gastroenterology by the American Board of Internal Medicine.
What services does Dr. Harry Nguyen bill to Medicare?
In 2024, Dr. Nguyen's most billed Medicare services were office visit, established patient (99214), office visit, new patient (99204) and hospital inpatient care (99233).
Where did Dr. Harry Nguyen go to medical school?
Dr. Nguyen graduated from Dr. Kiran C. Patel College of Osteopathic Medicine in 2016.
What drugs does Dr. Harry Nguyen prescribe most?
In 2024 Medicare Part D data, Dr. Nguyen's most prescribed drugs by claims were Vemlidy, Sod Sulf-Potass Sulf-Mag Sulf and Furosemide.
Has Dr. Harry Nguyen received payments from drug or device companies?
CMS Open Payments shows $1,264 in general payments to Dr. Nguyen from 8 companies from 2017 to 2023. The largest total came from Gilead Sciences, Inc.
How long has Dr. Harry Nguyen been practicing?
Dr. Nguyen graduated from medical school in 2016, 10 years ago.
What insurance does Dr. Harry Nguyen accept?
Dr. Nguyen is in network with 4 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
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