Dr. Steve S. Nguyen, MD
- Medicare services, 2020
- 16
- Medicare patients, 2024
- 12
- Part D claims, 2024
- 73
- Hospital affiliations
- 1
- Industry payments
- $2,293
- Practice address
- 9333 Imperial Highway, Downey, CA 90242
- Practice phone
- Call (562) 461-6007
- 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. Steve S. Nguyen is an emergency medicine physician in Downey, California
Dr. Nguyen practices at Downey Medical Center in Downey, California, part of Kaiser Permanente.
Dr. Nguyen's NPI, 1558433896, was assigned on November 14, 2006. Dr. Nguyen graduated from Joe R. & Teresa Lozano Long School of Medicine in 1987. Dr. Nguyen holds California license A45325.
- NPI
- 1558433896NPI Registry (opens in a new tab)
- NPI enumeration date
- November 14, 2006
- NPI status
- Active
- Practice phone
- (562) 461-6007
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Steve S. Nguyen practices at Downey Medical Center in Downey, California
Dr. Nguyen's primary practice is Downey Medical Center, at 9333 Imperial Highway, Downey, CA 90242 in Los Angeles County. The practice phone is (562) 461-6007.
- Downey Medical Center9333 Imperial Highway, Downey, CA 90242 · Los Angeles CountyPhone(562) 461-6007
Source: Dmand AI Affiliation Data
Dr. Steve S. Nguyen is affiliated with 3 sites of care and 1 medical group
Dr. Nguyen's primary practice is Downey Medical Center in Downey, California, part of Kaiser Permanente. 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.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Steve S. 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 |
|---|---|
| Downey Medical Center | 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. Steve S. 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. Dmand AI has Dr. Nguyen's licenses on file in 6 states: California, Texas, Illinois, Georgia, Louisiana and Pennsylvania.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
- Texas license
- Illinois license
- Georgia license
- Louisiana license
- Pennsylvania license
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. Steve S. Nguyen billed Medicare for 16 services in 2020
CMS data shows 16 Medicare services from Dr. Nguyen across 1 procedure code in 2020, for 12 Medicare patients. Medicare paid $1,315 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Nguyen's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Office and hospital visits
- 2019: 392020: 1659%
Dr. Nguyen compared with the California median for emergency medicine physicians, 2020
- Dr. Nguyen
- California median
- Medicare services
- 16vs 26594% below
- Medicare patients
- 12vs 24395% below
- Part D claims
- 11vs 6282% below
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, 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 emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Steve S. Nguyen treated 12 Medicare patients in 2024, average age 71
CMS counts 12 Medicare patients who saw Dr. Nguyen in 2024. 75% of them have high blood pressure. Their average risk score is 3.02, 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 48, with 60% women.
Chronic conditions among Dr. Nguyen's Medicare patients, 2024
- High blood pressure75%
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 48
Patient panel by sex, all payers
- Women60%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Steve S. Nguyen wrote 73 Medicare Part D claims in 2024
In 2024, Dr. Nguyen wrote 73 Medicare Part D claims for 56 patients. 99% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $73 in total drug cost. In 2020, CMS named 46 claims across 3 drugs.
Dr. Nguyen's Part D claims by kind of drug, 2024
- Generic72 claims99%
- Brand-name and other1 claims1%
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
- Opioids19%14 of 73 claims
- Antibiotics29%21 of 73 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, 2020 to 2024
- 2020
- 2024
- Claims for drugs CMS names
- 2020: 462024: 1176%
Drugs named by CMS: 1 in 2024, 3 in 2020.
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. Steve S. Nguyen received $2,293 in industry payments from 2018 to 2025
CMS Open Payments shows 22 general payments to Dr. Nguyen from 3 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Stryker Corporation paid the most, $2,245.
General payments to Dr. Nguyen by program year, 2018 to 2025
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. Steve S. Nguyen graduated from Joe R. & Teresa Lozano Long School of Medicine
Dr. Nguyen graduated from Joe R. & Teresa Lozano Long School of Medicine in 1987.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Steve S. Nguyen accepts plans from 1 insurance carrier
Dr. Nguyen is in network with 1 carrier, including Kaiser Permanente. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
Plan types Dr. Nguyen accepts, by number of carriers
- EPO1
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Steve S. 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) |
| 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. Steve S. 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. Steve S. Nguyen's NPI number?
Dr. Steve S. Nguyen's NPI number is 1558433896. It was assigned on November 14, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Steve S. Nguyen?
Dr. Steve S. Nguyen is an emergency medicine physician in Downey, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Steve S. Nguyen practice?
Dr. Nguyen practices at 9333 Imperial Highway, Downey, CA 90242. Dr. Nguyen's primary practice is Downey Medical Center in Downey, California, part of Kaiser Permanente. Dmand AI also links Dr. Nguyen to 1 breast imaging center and 1 group practice or clinic.
What is Dr. Steve S. Nguyen's office phone number?
The practice phone on file for Dr. Nguyen is (562) 461-6007.
What is Dr. Steve S. Nguyen's medical license number?
Dr. Nguyen holds California license A45325, one of the licenses on file in 6 states.
Which states has Dr. Steve S. Nguyen been licensed in?
Dmand AI has state licenses on file for Dr. Nguyen in California (1988 to 2026), Texas (1988 to 2000), Illinois (1993 to 1996), Georgia (1993 to 1995), Louisiana (1992 to 1994) and Pennsylvania (1992 to 1994).
Which hospitals is Dr. Steve S. Nguyen affiliated with?
Dr. Nguyen practices at Downey Medical Center in Downey, California.
What medical group is Dr. Steve S. Nguyen part of?
Dr. Nguyen is linked to Southern California Permanente Medical Group.
Does Dr. Steve S. Nguyen accept Medicare?
Yes. CMS data shows Dr. Nguyen billed Medicare for 16 services in 2020.
How many Medicare patients does Dr. Steve S. Nguyen see?
CMS counts 12 Medicare patients who saw Dr. Nguyen in 2024, with an average age of 71.
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Is Dr. Steve S. Nguyen board certified?
Yes. Dr. Nguyen is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Dr. Steve S. Nguyen bill to Medicare?
In 2020, Dr. Nguyen's most billed Medicare services were emergency department visit (99284).
Where did Dr. Steve S. Nguyen go to medical school?
Dr. Nguyen graduated from Joe R. & Teresa Lozano Long School of Medicine in 1987.
What drugs does Dr. Steve S. Nguyen prescribe most?
In 2024 Medicare Part D data, Dr. Nguyen's most prescribed drugs by claims were Hydrocodone-Acetaminophen.
Has Dr. Steve S. Nguyen received payments from drug or device companies?
CMS Open Payments shows $2,293 in general payments to Dr. Nguyen from 3 companies from 2018 to 2025. The largest total came from Stryker Corporation.
How long has Dr. Steve S. Nguyen been practicing?
Dr. Nguyen graduated from medical school in 1987, 39 years ago.
What insurance does Dr. Steve S. Nguyen accept?
Dr. Nguyen is in network with 1 carrier, including Kaiser Permanente. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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