Dr. Tuan D. Nguyen, MD
- Medicare services, 2024
- 1,098
- Medicare patients, 2024
- 647
- Part D claims, 2024
- 1,005
- MIPS score, 2024
- 97
- Hospital affiliations
- 3
- Practice address
- 9920 Talbert Avenue, Fountain Valley, CA 92708
- Practice phone
- Call (714) 378-7000
- 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. Tuan D. Nguyen is an emergency medicine physician in Fountain Valley, California
Dr. Nguyen practices at Orange Coast Medical Center in Fountain Valley, California, part of MemorialCare Health System.
Dr. Nguyen's NPI, 1083600449, was assigned on September 21, 2005. Dr. Nguyen graduated from David Geffen School of Medicine at UCLA in 1996. Dr. Nguyen holds California license A67517.
- NPI
- 1083600449NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2163419409
- NPI enumeration date
- September 21, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (714) 378-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Tuan D. Nguyen practices at Orange Coast Medical Center in Fountain Valley, California
Dr. Nguyen's primary practice is Orange Coast Medical Center, at 9920 Talbert Avenue, Fountain Valley, CA 92708 in Orange County. The practice phone is (714) 378-7000.
- Orange Coast Medical Center9920 Talbert Avenue, Fountain Valley, CA 92708 · Orange CountyPhone(714) 378-7000
Source: Dmand AI Affiliation Data
Dr. Tuan D. Nguyen is affiliated with 3 sites of care and 3 medical groups
Dr. Nguyen's primary practice is Orange Coast Medical Center in Fountain Valley, California, part of MemorialCare Health System. Dr. Nguyen is also affiliated with Long Beach Medical Center. The medical group on file is Vituity. Dmand AI also links Dr. Nguyen to 1 more hospital and 2 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Tuan D. Nguyen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nguyen practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Orange Coast Medical Center | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Tuan D. Nguyen is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Nguyen's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Nguyen is board certified in emergency medicine by the American Board of Emergency Medicine. Dr. Nguyen is licensed in California.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
Emergency medicine physicians near Dr. Nguyen
Counts of emergency medicine 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. Tuan D. Nguyen billed Medicare for 1,098 services in 2024
CMS data shows 1,098 Medicare services from Dr. Nguyen across 6 procedure codes in 2024, for 647 Medicare patients. Medicare paid $95,963 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Nguyen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6092024: 6629%
- Tests and treatments
- 2023: 4042024: 4368%
Dr. Nguyen compared with the California median for emergency medicine physicians, 2024
- Dr. Nguyen
- California median
- Medicare services
- 1,098vs 2654.1 times
- Medicare patients
- 647vs 2432.7 times
- Part D claims
- 833vs 6213.4 times
Medians across 7,079 emergency medicine 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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Tuan D. Nguyen treated 647 Medicare patients in 2024, average age 75
CMS counts 647 Medicare patients who saw Dr. Nguyen in 2024. The largest group is 75 to 84, with 235 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 60% are also on Medicaid. Their average risk score is 2.61, 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 49, with 58% women.
Dr. Nguyen's Medicare patients by age, 2024
Dr. Nguyen's Medicare patients by sex, 2024
- Women36256%
- Men28544%
Chronic conditions among Dr. Nguyen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Chronic kidney disease52%
- Diabetes50%
- Ischemic heart disease41%
- Heart failure40%
- Mood disorders39%
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 49
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. Tuan D. Nguyen wrote 1,005 Medicare Part D claims in 2024
In 2024, Dr. Nguyen wrote 1,005 Medicare Part D claims for 500 patients. 93% of them were for generic drugs. CMS names the drug for 833 of them, across 20 drugs with 11 or more claims each, at $4,608 in total drug cost. In 2023, CMS named 483 claims across 17 drugs.
Dr. Nguyen's Part D claims by kind of drug, 2024
- Generic939 claims93%
- Brand-name66 claims7%
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
- Opioids3%30 of 1,005 claims
- Antibiotics25%247 of 1,005 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: 4832024: 83372%
Drugs named by CMS: 20 in 2024, 17 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. Tuan D. Nguyen scored 97 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 97 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.
- Accepts Medicare assignment
- Yes
Dr. Nguyen's MIPS scores, performance year 2024
- 97of 100Final score
- 90of 100Quality
- 40of 100Improvement Activities
- 78of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Tuan D. Nguyen received $1,446 in industry payments from 2016 to 2023
CMS Open Payments shows 19 general payments to Dr. Nguyen from 12 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Pfizer Inc. paid the most, $242.
General payments to Dr. Nguyen by program year, 2016 to 2023
Companies that paid Dr. Nguyen the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Tuan D. Nguyen has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Nguyen, most recently NCQA DRP in 2013.
Awards and honors for Dr. Nguyen
- 2013
- NCQA DRP
- 2012
- NCQA HSRP
Source: Dmand AI Professional Profile Data
Dr. Tuan D. Nguyen graduated from David Geffen School of Medicine at UCLA
Dr. Nguyen graduated from David Geffen School of Medicine at UCLA in 1996.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Tuan D. Nguyen accepts plans from 7 insurance carriers
Dr. Nguyen is in network with 7 carriers, including United Healthcare, Aspirus Health Plan and Blue Cross and Blue Shield of Kansas City. PPO plans come from the most carriers, 4. Check the plan with the practice before a visit.
- United Healthcare
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- DentaQuest
- Elevance
- HCSC
Plan types Dr. Nguyen accepts, by number of carriers
- PPO4
- Medicare2
- POS2
- EPO1
- HMO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Tuan D. 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) |
| 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. Tuan D. 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. Tuan D. Nguyen's NPI number?
Dr. Tuan D. Nguyen's NPI number is 1083600449. It was assigned on September 21, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Tuan D. Nguyen?
Dr. Tuan D. Nguyen is an emergency medicine physician in Fountain Valley, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Tuan D. Nguyen practice?
Dr. Nguyen practices at 9920 Talbert Avenue, Fountain Valley, CA 92708. Dr. Nguyen's primary practice is Orange Coast Medical Center in Fountain Valley, California, part of MemorialCare Health System. Dmand AI also links Dr. Nguyen to 1 hospital and 2 medical groups.
What is Dr. Tuan D. Nguyen's office phone number?
The practice phone on file for Dr. Nguyen is (714) 378-7000.
What is Dr. Tuan D. Nguyen's medical license number?
Dr. Nguyen holds California license A67517.
Which hospitals is Dr. Tuan D. Nguyen affiliated with?
Dr. Nguyen practices at Orange Coast Medical Center in Fountain Valley, California. Dr. Nguyen is also affiliated with Long Beach Medical Center. Dmand AI links Dr. Nguyen to 1 more hospital.
What medical group is Dr. Tuan D. Nguyen part of?
Dr. Nguyen is linked to Vituity. Dmand AI links Dr. Nguyen to 2 more medical groups.
Does Dr. Tuan D. Nguyen accept Medicare?
Yes. CMS data shows Dr. Nguyen billed Medicare for 1,098 services in 2024, and Dr. Nguyen accepts Medicare assignment.
What is Dr. Tuan D. Nguyen's MIPS score?
Dr. Nguyen's MIPS final score for performance year 2024 is 97 out of 100, reported as part of a group.
How many Medicare patients does Dr. Tuan D. Nguyen see?
CMS counts 647 Medicare patients who saw Dr. Nguyen in 2024, with an average age of 75.
Show 7 more questionsShow fewer questions
Is Dr. Tuan D. Nguyen board certified?
Yes. Dr. Nguyen is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Dr. Tuan D. Nguyen bill to Medicare?
In 2024, Dr. Nguyen's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and critical care (99291).
Where did Dr. Tuan D. Nguyen go to medical school?
Dr. Nguyen graduated from David Geffen School of Medicine at UCLA in 1996.
What drugs does Dr. Tuan D. Nguyen prescribe most?
In 2024 Medicare Part D data, Dr. Nguyen's most prescribed drugs by claims were Ibuprofen, Ondansetron ODT and Cephalexin.
Has Dr. Tuan D. Nguyen received payments from drug or device companies?
CMS Open Payments shows $1,446 in general payments to Dr. Nguyen from 12 companies from 2016 to 2023. The largest total came from Pfizer Inc.
How long has Dr. Tuan D. Nguyen been practicing?
Dr. Nguyen graduated from medical school in 1996, 30 years ago.
What insurance does Dr. Tuan D. Nguyen accept?
Dr. Nguyen is in network with 7 carriers, including United Healthcare, Aspirus Health Plan and Blue Cross and Blue Shield of Kansas City. PPO plans come from the most carriers, 4. Check the plan with the practice before a visit.
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