Dr. Duc Trong Nguyen, MD
- Medicare services, 2020
- 38
- Part D claims, 2024
- 1,448
- Industry payments
- $2,960
- Insurance carriers
- 2
- State license
- 1
- Practice address
- 8403 N Fallbrook Ave, West Hills, CA 91304
- Practice phone
- Call (740) 289-3508
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Quest Diagnostics
West Hills, 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. Duc Trong Nguyen is a psychiatrist in West Hills, California
Dr. Nguyen practices at Quest Diagnostics in West Hills, California.
Dr. Nguyen's NPI, 1639353766, was assigned on December 26, 2007. Dr. Nguyen graduated from SUNY Upstate Medical University in 2006. Dr. Nguyen's California license number on file is A101981.
- NPI
- 1639353766NPI Registry (opens in a new tab)
- NPI enumeration date
- December 26, 2007
- NPI status
- Active
- Practice phone
- (740) 289-3508
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Duc Trong Nguyen practices at Quest Diagnostics in West Hills, California
Dr. Nguyen's primary practice is Quest Diagnostics, at 8403 N Fallbrook Ave, West Hills, CA 91304 in Los Angeles County. The practice phone is (740) 289-3508.
- Quest Diagnostics8403 N Fallbrook Ave, West Hills, CA 91304 · Los Angeles CountyPhone(740) 289-3508
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Duc Trong Nguyen is affiliated with 1 site of care
Dr. Nguyen's primary practice is Quest Diagnostics in West Hills, California.
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Duc Trong 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 |
|---|---|
| Quest Diagnostics | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Duc Trong Nguyen is one of 6,803 psychiatrists in California
Psychiatry is Dr. Nguyen's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Nguyen is board certified in psychiatry by the American Board of Psychiatry and Neurology. Dr. Nguyen has a license on file in California.
Specialties and state licenses
- Psychiatry, CaliforniaPrimary
Clinical focus
Dmand AI lists anxiety, bipolar disorder, depression and schizophrenia among the conditions Dr. Nguyen treats.
Psychiatrists near Dr. Nguyen
Counts of psychiatrists 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. Duc Trong Nguyen billed Medicare for 38 services in 2020
CMS data shows 38 Medicare services from Dr. Nguyen across 1 procedure code in 2020. Medicare paid $1,957 for them. Every service was in an office.
Dr. Nguyen's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Office and hospital visits
- 2019: 3102020: 3888%
Dr. Nguyen compared with the California median for psychiatrists, 2020
- Dr. Nguyen
- California median
- Medicare services
- 38vs 11968% below
- Part D claims
- 1,310vs 1449.1 times
Medians across 6,809 psychiatrists in California with Dmand AI profiles that report each measure.
Dr. Nguyen's most billed Medicare procedure codes, 2020
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 psychiatrists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Duc Trong Nguyen's patients have a median age of 67
Across all payers, Dmand AI patient panel data puts Dr. Nguyen's median patient age at 67, with 60% women.
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 67
Patient panel by sex, all payers
- Women60%
- Men40%
Source: Dmand AI Patient Panel Data
Dr. Duc Trong Nguyen wrote 1,448 Medicare Part D claims in 2024
In 2024, Dr. Nguyen wrote 1,448 Medicare Part D claims for 88 patients. 88% of them were for generic drugs. CMS names the drug for 1,310 of them, across 36 drugs with 11 or more claims each, at $385,373 in total drug cost. In 2023, CMS named 1,426 claims across 40 drugs.
Dr. Nguyen's Part D claims by kind of drug, 2024
- Generic1,272 claims88%
- Brand-name176 claims12%
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
- Antipsychotics, patients 65 and over12%178 of 1,448 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: 1,4262024: 1,3108%
Drugs named by CMS: 36 in 2024, 40 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
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Dr. Duc Trong Nguyen received $2,960 in industry payments from 2018 to 2025
CMS Open Payments shows 101 general payments to Dr. Nguyen from 8 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 97% of the total. Janssen Pharmaceuticals, Inc paid the most, $1,318.
General payments to Dr. Nguyen by program year, 2018 to 2025
General payments to Dr. Nguyen by kind, 2018 to 2025
- Food and beverage$2,86097%
- Education$993%
Companies that paid Dr. Nguyen the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Duc Trong Nguyen graduated from SUNY Upstate Medical University
Dr. Nguyen graduated from SUNY Upstate Medical University in 2006.
- Medical school
- Board certified in psychiatry
Source: Dmand AI Professional Profile Data
Dr. Duc Trong Nguyen accepts plans from 2 insurance carriers
Dr. Nguyen is in network with 2 carriers, including Elevance and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Massachusetts
Plan types Dr. Nguyen accepts, by number of carriers
- Medicare2
- PPO2
- EPO1
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Duc Trong 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 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 Data |
| 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) |
| 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. Duc Trong 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. Duc Trong Nguyen's NPI number?
Dr. Duc Trong Nguyen's NPI number is 1639353766. It was assigned on December 26, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Duc Trong Nguyen?
Dr. Duc Trong Nguyen is a psychiatrist in West Hills, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Duc Trong Nguyen practice?
Dr. Nguyen practices at 8403 N Fallbrook Ave, West Hills, CA 91304. Dr. Nguyen's primary practice is Quest Diagnostics in West Hills, California.
What is Dr. Duc Trong Nguyen's office phone number?
The practice phone on file for Dr. Nguyen is (740) 289-3508.
What is Dr. Duc Trong Nguyen's medical license number?
Dr. Nguyen's California license number on file is A101981.
Does Dr. Duc Trong Nguyen accept Medicare?
Yes. CMS data shows Dr. Nguyen billed Medicare for 38 services in 2020.
Is Dr. Duc Trong Nguyen board certified?
Yes. Dr. Nguyen is board certified in psychiatry by the American Board of Psychiatry and Neurology.
What services does Dr. Duc Trong Nguyen bill to Medicare?
In 2020, Dr. Nguyen's most billed Medicare services were home visit (99348).
Where did Dr. Duc Trong Nguyen go to medical school?
Dr. Nguyen graduated from SUNY Upstate Medical University in 2006.
What drugs does Dr. Duc Trong Nguyen prescribe most?
In 2024 Medicare Part D data, Dr. Nguyen's most prescribed drugs by claims were Quetiapine Fumarate, Trazodone HCl and Bupropion XL.
Show 3 more questionsShow fewer questions
Has Dr. Duc Trong Nguyen received payments from drug or device companies?
CMS Open Payments shows $2,960 in general payments to Dr. Nguyen from 8 companies from 2018 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Duc Trong Nguyen been practicing?
Dr. Nguyen graduated from medical school in 2006, 20 years ago.
What insurance does Dr. Duc Trong Nguyen accept?
Dr. Nguyen is in network with 2 carriers, including Elevance and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
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