J Am Coll Surg
Dr. Ninh T. Nguyen, MD
- Medicare services, 2024
- 99
- Medicare patients, 2024
- 84
- Part D claims, 2024
- 12
- Publications
- 272
- Clinical trials
- 3
- 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
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. Ninh T. Nguyen is a general surgeon in Orange, California
Dr. Nguyen practices at UCI Health - Orange in Orange, California, part of UC Irvine.
Dr. Nguyen's NPI, 1487734653, was assigned on October 16, 2006. Dr. Nguyen graduated from Joe R. & Teresa Lozano Long School of Medicine in 1990. Dr. Nguyen holds California license 000000G84677.
- NPI
- 1487734653NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0749230977
- NPI enumeration date
- October 16, 2006
- 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
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ninh T. 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. Ninh T. 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. Ninh T. 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
For health IT teams
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Dr. Ninh T. Nguyen is one of 2,926 general surgeons in California
Surgery is Dr. Nguyen's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Nguyen is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Nguyen's licenses on file in 3 states: California, Florida and Pennsylvania.
Specialties and state licenses
- Surgery, CaliforniaPrimary
- Florida license
- Pennsylvania license
Clinical focus
Dmand AI lists esophagus, stomach, or upper small intestine surgery among the conditions Dr. Nguyen treats.
General surgeons near Dr. Nguyen
Counts of general surgeons 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. Ninh T. Nguyen billed Medicare for 99 services in 2024
CMS data shows 99 Medicare services from Dr. Nguyen across 3 procedure codes in 2024, for 84 Medicare patients. Medicare paid $8,442 for them.
Dr. Nguyen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1202024: 9918%
- Surgery
- 2023: 332024: 0100%
Where Dr. Nguyen's Medicare services took place, 2024
- In an office3030%
- In a facility6970%
Dr. Nguyen compared with the California median for general surgeons, 2024
- Dr. Nguyen
- California median
- Medicare services
- 99vs 16640% below
- Medicare patients
- 84vs 12131% below
Medians across 2,606 general surgeons 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Nguyen and other general surgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ninh T. Nguyen treated 84 Medicare patients in 2024, average age 72
CMS counts 84 Medicare patients who saw Dr. Nguyen in 2024. The largest group is 65 to 74, with 42 patients. 75% of them have high cholesterol, and 73% have high blood pressure. 21% are also on Medicaid. Their average risk score is 1.11, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Nguyen's median patient age at 62, with 58% women.
Dr. Nguyen's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Nguyen's Medicare patients by sex, 2024
- Women5262%
- Men3238%
Chronic conditions among Dr. Nguyen's Medicare patients, 2024
- High cholesterol75%
- High blood pressure73%
- Arthritis51%
- Ischemic heart disease31%
- Diabetes27%
- Asthma21%
- COPD20%
- Depression20%
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
- Women58%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ninh T. Nguyen wrote 12 Medicare Part D claims in 2024
In 2024, Dr. Nguyen wrote 12 Medicare Part D claims.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Ninh T. Nguyen ranks in the 57th percentile for upper gastrointestinal (gi) endoscopy for acid reflux in Medicare
Dr. Nguyen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Nguyen as offering telehealth. CMS counts 33 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Nguyen, more than 57% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Nguyen ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 57th percentile33 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Ninh T. Nguyen has 272 publications on record
Dmand AI links 272 papers to Dr. Nguyen, published from 2001 to 2025. 2017 was the busiest year, with 11. The most frequent topics are Laparoscopy, Obesity, Morbid and Postoperative Complications. Dr. Nguyen has published most often in Am Surg. Dr. Nguyen's most frequent co-authors are Brian R. Smith, MD, Michael J Stamos, MD and Marcelo Wilfran Hinojosa, MD.
Dr. Nguyen's papers by year, 2016 to 2025
Topics Dr. Nguyen writes about most
- Laparoscopy
- Obesity, Morbid
- Postoperative Complications
- Gastric Bypass
- Bariatric Surgery
- Length of Stay
- Gastrectomy
- Hospital Mortality
Dr. Nguyen's most frequent co-authors
- Brian R. Smith, MD56 shared papers
- Michael J Stamos, MD43 shared papers
- Marcelo Wilfran Hinojosa, MD38 shared papers
Recent publications by Dr. Nguyen
Gastrointest Endosc Clin N Am
J Gastrointest Surg
See who Dr. Nguyen researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Nguyen works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ninh T. Nguyen has worked on 3 clinical trials
Dmand AI links Dr. Nguyen to 3 clinical trials. Conditions studied include Obesity, Morbid, Obesity and Adenocarcinoma. University of California, Irvine sponsors the most, 3.
Conditions in Dr. Nguyen's trials
- Obesity, Morbid
- Obesity
- Adenocarcinoma
- Carcinoma
Recent clinical trials with Dr. Nguyen
Evaluation of Endostapled Anastomoses for Laparoscopic Gastric Bypass (EEA-LGB) (opens in a new tab)
Laparoscopic Gastric Bypass vs LAP-BAND for Treatment of Morbid Obesity (opens in a new tab)
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Ninh T. Nguyen received $432,646 in industry payments from 2016 to 2025
CMS Open Payments shows 501 general payments to Dr. Nguyen from 24 drug and device companies from 2016 to 2025. Education make up the largest share, 38% of the total. Olympus Corporation of the Americas paid the most, $174,035.
General payments to Dr. Nguyen by program year, 2016 to 2025
General payments to Dr. Nguyen by kind, 2016 to 2025
- Education$156,59838%
- Consulting fees$105,81025%
- Ownership or investment$80,79519%
- Travel and lodging$32,4878%
- Other$39,82410%
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. Ninh T. Nguyen has 6 awards and honors on record
Dmand AI lists 6 awards for Dr. Nguyen, most recently America's Top Doctors in 2014.
Awards and honors for Dr. Nguyen
- 2014
- America's Top Doctors
- 2013
- Top Doctors:LA Area
- Top Doctors:San Diego Area
- 2012
- Top Doctors:Southern California
- Undated
- ACS Fellow
- Super Doc
Source: Dmand AI Professional Profile Data
Dr. Ninh T. Nguyen graduated from Joe R. & Teresa Lozano Long School of Medicine
Dr. Nguyen graduated from Joe R. & Teresa Lozano Long School of Medicine in 1990. Dr. Nguyen is a member of ACS, ASGE, ASMBS, SSAT and SAGES.
- Medical school
- Board certified in surgery
Source: Dmand AI Professional Profile Data
Dr. Ninh T. Nguyen accepts plans from 14 insurance carriers
Dr. Nguyen is in network with 14 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +6 more carriersWith a free account
Plan types Dr. Nguyen accepts, by number of carriers
- PPO9
- Medicare8
- HMO6
- POS5
- EPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Ninh T. 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 (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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Ninh T. 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. Ninh T. Nguyen's NPI number?
Dr. Ninh T. Nguyen's NPI number is 1487734653. It was assigned on October 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ninh T. Nguyen?
Dr. Ninh T. Nguyen is a general surgeon in Orange, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Ninh T. 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. Ninh T. Nguyen's office phone number?
The practice phone on file for Dr. Nguyen is (714) 456-7890.
What is Dr. Ninh T. Nguyen's medical license number?
Dr. Nguyen holds California license 000000G84677, one of the licenses on file in 3 states.
Which states has Dr. Ninh T. Nguyen been licensed in?
Dmand AI has state licenses on file for Dr. Nguyen in California (1998 to 2026), Florida (1993 to 1998) and Pennsylvania (1995 to 1998).
Which hospitals is Dr. Ninh T. Nguyen affiliated with?
Dr. Nguyen practices at UCI Health - Orange in Orange, California.
What medical group is Dr. Ninh T. Nguyen part of?
Dr. Nguyen is linked to UCI Health Physicians.
Does Dr. Ninh T. Nguyen accept Medicare?
Yes. CMS data shows Dr. Nguyen billed Medicare for 99 services in 2024, and Dr. Nguyen accepts Medicare assignment.
Does Dr. Ninh T. Nguyen offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Nguyen as offering telehealth services.
Show 9 more questionsShow fewer questions
How many Medicare patients does Dr. Ninh T. Nguyen see?
CMS counts 84 Medicare patients who saw Dr. Nguyen in 2024, with an average age of 72.
Is Dr. Ninh T. Nguyen board certified?
Yes. Dr. Nguyen is board certified in surgery by the American Board of Surgery.
What services does Dr. Ninh T. Nguyen bill to Medicare?
In 2024, Dr. Nguyen's most billed Medicare services were office visit, established patient (99214), care management and other visits (99443) and office visit, new patient (99204).
Where did Dr. Ninh T. Nguyen go to medical school?
Dr. Nguyen graduated from Joe R. & Teresa Lozano Long School of Medicine in 1990.
Has Dr. Ninh T. Nguyen received payments from drug or device companies?
CMS Open Payments shows $432,646 in general payments to Dr. Nguyen from 24 companies from 2016 to 2025. The largest total came from Olympus Corporation of the Americas.
How long has Dr. Ninh T. Nguyen been practicing?
Dr. Nguyen graduated from medical school in 1990, 36 years ago.
Does Dr. Ninh T. Nguyen do research?
Dmand AI links 272 publications to Dr. Nguyen, published from 2001 to 2025. Dr. Nguyen has worked on 3 clinical trials.
Who does Dr. Ninh T. Nguyen publish with?
Dr. Nguyen's most frequent co-authors are Brian R. Smith, MD (56 shared papers), Michael J Stamos, MD (43 shared papers) and Marcelo Wilfran Hinojosa, MD (38 shared papers).
What insurance does Dr. Ninh T. Nguyen accept?
Dr. Nguyen is in network with 14 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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