Dr. Oliver Q. Nguyen, MD
- Medicare services, 2024
- 24
- Medicare patients, 2024
- 22
- Part D claims, 2024
- 7,608
- Industry payments
- $116
- Affiliated sites
- 3
- Practice address
- 9400 Rosecrans Avenue, Bellflower, CA 90706
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kaiser Permanente Medical Group Bellflower Medical Offices - HOPD
Acute Care Hospital outpatient department · Bellflower, 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. Oliver Q. Nguyen is an internist in Bellflower, California
Dr. Nguyen practices at Kaiser Permanente Medical Group Bellflower Medical Offices - HOPD in Bellflower, California.
Dr. Nguyen's NPI, 1356418289, was assigned on November 29, 2006. Dr. Nguyen graduated from School of Medicine Columbia in 1992. Dr. Nguyen's California license number on file is G78281.
- NPI
- 1356418289NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6103005103
- NPI enumeration date
- November 29, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Oliver Q. Nguyen practices at Kaiser Permanente Medical Group Bellflower Medical Offices - HOPD in Bellflower, California
Dr. Nguyen's primary practice is Kaiser Permanente Medical Group Bellflower Medical Offices - HOPD, at 9400 Rosecrans Avenue, Bellflower, CA 90706.
- Kaiser Permanente Medical Group Bellflower Medical Offices - HOPD9400 Rosecrans Avenue, Bellflower, CA 90706
Source: Dmand AI Affiliation Data
Dr. Oliver Q. Nguyen is affiliated with 3 sites of care and 1 medical group
Dr. Nguyen's primary practice is Kaiser Permanente Medical Group Bellflower Medical Offices - HOPD in Bellflower, California. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Nguyen to 1 more breast imaging center and 1 group practice or clinic, each named with a free account. Dr. Nguyen's employer is on file too: a hospital.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Oliver Q. 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 |
|---|---|
| Kaiser Permanente Medical Group Bellflower Medical Offices - HOPD | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Oliver Q. Nguyen is one of 16,751 internists in California
Internal medicine is Dr. Nguyen's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Nguyen's licenses on file in 2 states: California and South Carolina.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- South Carolina license
Clinical focus
Dmand AI lists asthma, chronic diabetes and tobacco use among the conditions Dr. Nguyen treats.
Internists near Dr. Nguyen
Counts of internists 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. Oliver Q. Nguyen billed Medicare for 24 services in 2024
CMS data shows 24 Medicare services from Dr. Nguyen across 1 procedure code in 2024, all of them office visits, for 22 Medicare patients. Medicare paid $1,625 for them. Every service was in an office.
Dr. Nguyen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 192024: 2426%
Dr. Nguyen compared with the California median for internists, 2024
- Dr. Nguyen
- California median
- Medicare services
- 24vs 36193% below
- Medicare patients
- 22vs 15185% below
- Part D claims
- 7,133vs 42116.9 times
Medians across 15,815 internists 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 internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Oliver Q. Nguyen treated 22 Medicare patients in 2024, average age 61
CMS counts 22 Medicare patients who saw Dr. Nguyen in 2024. 75% of them have high blood pressure, and 68% have high cholesterol. Their average risk score is 1.97, 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 56, with 57% women.
Chronic conditions among Dr. Nguyen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol68%
- Diabetes50%
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 56
Patient panel by sex, all payers
- Women57%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Oliver Q. Nguyen wrote 7,608 Medicare Part D claims in 2024
In 2024, Dr. Nguyen wrote 7,608 Medicare Part D claims for 764 patients. 89% of them were for generic drugs. CMS names the drug for 7,133 of them, across 91 drugs with 11 or more claims each, at $319,321 in total drug cost. In 2023, CMS named 6,975 claims across 91 drugs.
Dr. Nguyen's Part D claims by kind of drug, 2024
- Generic6,734 claims89%
- Brand-name703 claims9%
- Other171 claims2%
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%225 of 7,608 claims
- Antibiotics1%107 of 7,608 claims
- Antipsychotics, patients 65 and over0%20 of 7,608 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: 6,9752024: 7,1332%
Drugs named by CMS: 91 in 2024, 91 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. Oliver Q. Nguyen offers telehealth to Medicare patients
Dr. Nguyen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Nguyen as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Oliver Q. Nguyen received $116 in industry payments from 2017 to 2025
CMS Open Payments shows 2 general payments to Dr. Nguyen from 2 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Medtronic Vascular, Inc. paid the most, $93.
General payments to Dr. Nguyen by program year, 2017 to 2025
Companies that paid Dr. Nguyen the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Oliver Q. Nguyen has 4 awards and honors on record
Dmand AI lists 4 awards for Dr. Nguyen, most recently NCQA DRP in 2013.
Awards and honors for Dr. Nguyen
- 2013
- NCQA DRP
- 2012
- NCQA HSRP
- 2011
- CMS Stage 1 2012
- Undated
- Bridges to Excellence
Source: Dmand AI Professional Profile Data
Dr. Oliver Q. Nguyen graduated from School of Medicine Columbia
Dr. Nguyen graduated from School of Medicine Columbia in 1992.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Oliver Q. Nguyen accepts plans from 1 insurance carrier
Dr. Nguyen is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
- CMS Medicare
Source: Dmand AI Insurance Network Data
Sources for Dr. Oliver Q. 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 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) |
| 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. Oliver Q. 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. Oliver Q. Nguyen's NPI number?
Dr. Oliver Q. Nguyen's NPI number is 1356418289. It was assigned on November 29, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Oliver Q. Nguyen?
Dr. Oliver Q. Nguyen is an internist in Bellflower, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Oliver Q. Nguyen practice?
Dr. Nguyen practices at 9400 Rosecrans Avenue, Bellflower, CA 90706. Dr. Nguyen's primary practice is Kaiser Permanente Medical Group Bellflower Medical Offices - HOPD in Bellflower, California. Dmand AI also links Dr. Nguyen to 1 breast imaging center and 1 group practice or clinic.
What is Dr. Oliver Q. Nguyen's medical license number?
Dr. Nguyen's California license number on file is G78281, one of the licenses on file in 2 states.
Which states has Dr. Oliver Q. Nguyen been licensed in?
Dmand AI has state licenses on file for Dr. Nguyen in California (1994 to 2025) and South Carolina (1995 to 1996).
What medical group is Dr. Oliver Q. Nguyen part of?
Dr. Nguyen is linked to Southern California Permanente Medical Group.
Does Dr. Oliver Q. Nguyen accept Medicare?
Yes. CMS data shows Dr. Nguyen billed Medicare for 24 services in 2024, and Dr. Nguyen accepts Medicare assignment.
Does Dr. Oliver Q. Nguyen offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Nguyen as offering telehealth services.
How many Medicare patients does Dr. Oliver Q. Nguyen see?
CMS counts 22 Medicare patients who saw Dr. Nguyen in 2024, with an average age of 61.
What services does Dr. Oliver Q. Nguyen bill to Medicare?
In 2024, Dr. Nguyen's most billed Medicare services were office visit, established patient (99214).
Show 5 more questionsShow fewer questions
Where did Dr. Oliver Q. Nguyen go to medical school?
Dr. Nguyen graduated from School of Medicine Columbia in 1992.
What drugs does Dr. Oliver Q. Nguyen prescribe most?
In 2024 Medicare Part D data, Dr. Nguyen's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Lisinopril.
Has Dr. Oliver Q. Nguyen received payments from drug or device companies?
CMS Open Payments shows $116 in general payments to Dr. Nguyen from 2 companies from 2017 to 2025. The largest total came from Medtronic Vascular, Inc.
How long has Dr. Oliver Q. Nguyen been practicing?
Dr. Nguyen graduated from medical school in 1992, 34 years ago.
What insurance does Dr. Oliver Q. Nguyen accept?
Dr. Nguyen is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
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