Int J Bioinform Res Appl
Amino Acid SequenceBase SequenceComputational Biology
Dr. Ken Nguyen, DO
NPI1851351894PAC ID3870539620
- Medicare services, 2023
- 184
- Part D claims, 2024
- 1,151
- Publications
- 2
- Industry payments
- $2,161
- Affiliated sites
- 4
- Practice address
- 1851 N. Riverside Ave, Rialto, CA 92376
- Practice phone
- Call (909) 822-2323
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Optum - Rialto
Mammography / Breast Imaging Center · Rialto, 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. Ken Nguyen is an emergency medicine physician in Rialto, California
Dr. Nguyen practices at Optum - Rialto in Rialto, California.
Dr. Nguyen's NPI, 1851351894, was assigned on March 24, 2006. Dr. Nguyen graduated from WesternU College of Osteopathic Medicine of the Pacific in 1995. Dr. Nguyen holds California license 20A8914.
NPI and contact details
- NPI
- 1851351894NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3870539620
- NPI enumeration date
- March 24, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 822-2323
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ken Nguyen practices at Optum - Rialto in Rialto, California
Dr. Nguyen's primary practice is Optum - Rialto, at 1851 N. Riverside Ave, Rialto, CA 92376. The practice phone is (909) 822-2323.
- Optum - Rialto1851 N. Riverside Ave, Rialto, CA 92376Phone(909) 822-2323
Source: Dmand AI Affiliation Data
Dr. Ken Nguyen is affiliated with 4 sites of care and 3 medical groups
Dr. Nguyen's primary practice is Optum - Rialto in Rialto, California. The medical group on file is Optum - Downtown Los Angeles. Dmand AI also links Dr. Nguyen to 3 more group practices and clinics and 2 medical groups, each named with a free account. Dr. Nguyen's employer is on file too: a breast imaging center.
Optum - RialtoPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ken Nguyen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nguyen practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Optum - Rialto | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Ken 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 internal medicine by the American Board of Internal Medicine. Dr. Nguyen is licensed in California.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acute skin infection, broken or dislocated ankle/ or foot, chest wall injury, chronic hypertension, conjunctivitis, contact dermatitis, ear infection and eyelid inflammation among the conditions Dr. Nguyen treats.
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. Ken Nguyen billed Medicare for 184 services in 2023
CMS data shows 184 Medicare services from Dr. Nguyen across 5 procedure codes in 2023. Medicare paid $7,692 for them. Every service was in an office.
Medicare services, 2023184
Paid by Medicare$7,692
Procedure codes5
Dr. Nguyen's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 1282023: 14211%
- Lab and pathology
- 2022: 242023: 3129%
- Tests and treatments
- 2022: 202023: 1145%
Dr. Nguyen compared with the California median for emergency medicine physicians, 2023
- Dr. Nguyen
- California median
- Medicare services
- 184vs 26531% below
- Part D claims
- 1,007vs 6216.2 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, 2023
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 emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ken Nguyen's patients have a median age of 59
Across all payers, Dmand AI patient panel data puts Dr. Nguyen's median patient age at 59, with 61% 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 59
Patient panel by sex, all payers
- Women61%
- Men38%
Source: Dmand AI Patient Panel Data
Dr. Ken Nguyen wrote 1,151 Medicare Part D claims in 2024
In 2024, Dr. Nguyen wrote 1,151 Medicare Part D claims for 764 patients. 92% of them were for generic drugs. CMS names the drug for 1,007 of them, across 22 drugs with 11 or more claims each, at $7,221 in total drug cost. In 2023, CMS named 640 claims across 17 drugs.
Part D claims, 20241,151
Drugs named by CMS22
Total drug cost$7,221
Part D patients764
Dr. Nguyen's Part D claims by kind of drug, 2024
- Generic1,056 claims92%
- Brand-name and other95 claims8%
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
- Antibiotics47%545 of 1,151 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: 6402024: 1,00757%
Drugs named by CMS: 22 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
How Dr. Ken Nguyen takes part in Medicare
Dr. Nguyen accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ken Nguyen has 2 publications on record
Dmand AI links 2 papers to Dr. Nguyen. The most frequent topics are Sequence Alignment and Sequence Analysis, Protein. Dr. Nguyen's most frequent co-author is Yi Pan, MD.
Papers2
Topics Dr. Nguyen writes about most
- Sequence Alignment
- Sequence Analysis, Protein
Dr. Nguyen's most frequent co-authors
Recent publications by Dr. Nguyen
IEEE Trans Nanobioscience
AlgorithmsResearch DesignSequence Alignment
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 emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ken Nguyen received $2,161 in industry payments from 2016 to 2025
CMS Open Payments shows 45 general payments to Dr. Nguyen from 18 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $410.
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. Ken Nguyen graduated from WesternU College of Osteopathic Medicine of the Pacific
Dr. Nguyen graduated from WesternU College of Osteopathic Medicine of the Pacific in 1995. Dr. Nguyen is a member of AOA.
- Medical school
- Board certified in internal medicine
- Board certified in 1996 - 2026
Source: Dmand AI Professional Profile Data
Dr. Ken Nguyen accepts plans from 4 insurance carriers
Dr. Nguyen is in network with 4 carriers, including Blue Cross Blue Shield of Massachusetts, Blue Cross Blue Shield of Michigan and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- HCSC
- Regence Health Plans
Plan types Dr. Nguyen accepts, by number of carriers
- Medicare4
- PPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Ken 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 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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 |
| 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. Ken 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. Ken Nguyen's NPI number?
Dr. Ken Nguyen's NPI number is 1851351894. It was assigned on March 24, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ken Nguyen?
Dr. Ken Nguyen is an emergency medicine physician in Rialto, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Ken Nguyen practice?
Dr. Nguyen practices at 1851 N. Riverside Ave, Rialto, CA 92376. Dr. Nguyen's primary practice is Optum - Rialto in Rialto, California. Dmand AI also links Dr. Nguyen to 3 group practices and clinics and 2 medical groups.
What is Dr. Ken Nguyen's office phone number?
The practice phone on file for Dr. Nguyen is (909) 822-2323.
What is Dr. Ken Nguyen's medical license number?
Dr. Nguyen holds California license 20A8914.
What medical group is Dr. Ken Nguyen part of?
Dr. Nguyen is linked to Optum - Downtown Los Angeles. Dmand AI links Dr. Nguyen to 2 more medical groups.
Does Dr. Ken Nguyen accept Medicare?
Yes. CMS data shows Dr. Nguyen billed Medicare for 184 services in 2023, and Dr. Nguyen accepts Medicare assignment.
Is Dr. Ken Nguyen board certified?
Yes. Dr. Nguyen is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Ken Nguyen bill to Medicare?
In 2023, Dr. Nguyen's most billed Medicare services were office visit, established patient (99213), lab and pathology test (81003) and office visit, new patient (99203).
Where did Dr. Ken Nguyen go to medical school?
Dr. Nguyen graduated from WesternU College of Osteopathic Medicine of the Pacific in 1995.
Show 6 more questionsShow fewer questions
What drugs does Dr. Ken Nguyen prescribe most?
In 2024 Medicare Part D data, Dr. Nguyen's most prescribed drugs by claims were Amoxicillin-Clavulanate Potass, Ibuprofen and Nitrofurantoin Mono-Macro.
Has Dr. Ken Nguyen received payments from drug or device companies?
CMS Open Payments shows $2,161 in general payments to Dr. Nguyen from 18 companies from 2016 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Ken Nguyen been practicing?
Dr. Nguyen graduated from medical school in 1995, 31 years ago.
Does Dr. Ken Nguyen do research?
Dmand AI links 2 publications to Dr. Nguyen.
Who does Dr. Ken Nguyen publish with?
Dr. Nguyen's most frequent co-authors are Yi Pan, MD (1 shared paper).
What insurance does Dr. Ken Nguyen accept?
Dr. Nguyen is in network with 4 carriers, including Blue Cross Blue Shield of Massachusetts, Blue Cross Blue Shield of Michigan and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
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