Dr. Steve Nguyen, DO
- Medicare services, 2024
- 359
- Medicare patients, 2024
- 156
- Part D claims, 2024
- 410
- Publications
- 19
- Hospital affiliations
- 6
- Practice address
- 100 S Raymond Ave, Alhambra, CA 91801
- Practice phone
- Call (626) 570-1606
- 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 Nguyen is a gastroenterologist in Alhambra, California
Dr. Nguyen practices at Alhambra Hospital Medical Center in Alhambra, California, part of AHMC Healthcare.
Dr. Nguyen's NPI, 1649357732, was assigned on November 1, 2006. Dr. Nguyen graduated from WesternU College of Osteopathic Medicine of the Pacific in 1995. Dr. Nguyen holds California license 20A7028.
- NPI
- 1649357732NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3173578887
- NPI enumeration date
- November 1, 2006
- NPI status
- Active
- Practice phone
- (626) 570-1606
- 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; and Dmand AI Affiliation Data
Dr. Steve Nguyen practices at Alhambra Hospital Medical Center in Alhambra, California
Dr. Nguyen's primary practice is Alhambra Hospital Medical Center, at 100 S Raymond Ave, Alhambra, CA 91801 in Los Angeles County. The practice phone is (626) 570-1606.
- Alhambra Hospital Medical Center100 S Raymond Ave, Alhambra, CA 91801 · Los Angeles CountyPhone(626) 570-1606
Source: Dmand AI Affiliation Data
Dr. Steve Nguyen is affiliated with 8 sites of care
Dr. Nguyen's primary practice is Alhambra Hospital Medical Center in Alhambra, California, part of AHMC Healthcare. Dr. Nguyen is also affiliated with AHMC San Gabriel Valley Medical Center. Dmand AI also links Dr. Nguyen to 4 more hospitals, 1 physician office and 1 skilled nursing facility, 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 Nguyen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nguyen practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Alhambra Hospital Medical Center | Available with a free account |
| +7 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Steve Nguyen is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Nguyen's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Nguyen is board certified in 1997 - 2025 by the CA State License. Dr. Nguyen is licensed in California.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
Clinical focus
Dmand AI lists acid reflux, acute gastroduodenitis, cirrhosis of the liver, colonoscopy, fatty liver, gastroduodenitis, gastrointestinal bleeding and hemorrhoids among the conditions Dr. Nguyen treats.
Gastroenterologists near Dr. Nguyen
Counts of gastroenterologists 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 Nguyen billed Medicare for 359 services in 2024
CMS data shows 359 Medicare services from Dr. Nguyen across 10 procedure codes in 2024, for 156 Medicare patients. Medicare paid $31,329 for them.
Dr. Nguyen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3022024: 2759%
- Surgery
- 2023: 772024: 849%
- Other services
- 2023: 282024: 0100%
Where Dr. Nguyen's Medicare services took place, 2024
- In an office13738%
- In a facility22262%
Dr. Nguyen compared with the California median for gastroenterologists, 2024
- Dr. Nguyen
- California median
- Medicare services
- 359vs 58639% below
- Medicare patients
- 156vs 30248% below
- Part D claims
- 339vs 38011% below
Medians across 1,875 gastroenterologists 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. Steve Nguyen treated 156 Medicare patients in 2024, average age 71
CMS counts 156 Medicare patients who saw Dr. Nguyen in 2024. The largest group is 65 to 74, with 69 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 92% are also on Medicaid. Their average risk score is 2.31, 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 64, with 49% women.
Dr. Nguyen's Medicare patients by age, 2024
Dr. Nguyen's Medicare patients by sex, 2024
- Women9863%
- Men5837%
Chronic conditions among Dr. Nguyen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes69%
- Arthritis45%
- Ischemic heart disease42%
- Chronic kidney disease40%
- Mood disorders33%
- Depression29%
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 64
Patient panel by sex, all payers
- Women49%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Steve Nguyen wrote 410 Medicare Part D claims in 2024
In 2024, Dr. Nguyen wrote 410 Medicare Part D claims for 190 patients. 87% of them were for generic drugs. CMS names the drug for 339 of them, across 8 drugs with 11 or more claims each, at $28,684 in total drug cost. In 2023, CMS named 480 claims across 12 drugs.
Dr. Nguyen's Part D claims by kind of drug, 2024
- Generic355 claims87%
- Brand-name55 claims13%
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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4802024: 33929%
Drugs named by CMS: 8 in 2024, 12 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. Steve Nguyen ranks in the 74th percentile for upper gastrointestinal (gi) endoscopy for acid reflux in Medicare
CMS counts 87 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Nguyen, more than 74% of the clinicians it reports for that procedure.
Where Dr. Nguyen ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 74th percentile87 procedures
- Colonoscopy
- 53rd percentile29 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Source: Doctors and Clinicians Utilization Data (CMS)
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Dr. Steve Nguyen has 19 publications on record
Dmand AI links 19 papers to Dr. Nguyen, published from 2017 to 2025. 2022 was the busiest year, with 4. The most frequent topics are Cardiovascular Diseases, Accelerometry and Exercise. Dr. Nguyen has published most often in J Am Heart Assoc. Dr. Nguyen's most frequent co-authors are Joann E. Manson, MD, Eric Anders Whitsel, MD, MPH and Matthew A. Allison, MD.
Dr. Nguyen's papers by year, 2017 to 2025
Topics Dr. Nguyen writes about most
- Cardiovascular Diseases
- Accelerometry
- Exercise
- Women's Health
- Body Mass Index
- DNA Methylation
- Sedentary Behavior
- Epigenesis, Genetic
Dr. Nguyen's most frequent co-authors
- Joann E. Manson, MD4 shared papers
- Eric Anders Whitsel, MD, MPH4 shared papers
- Matthew A. Allison, MD3 shared papers
Recent publications by Dr. Nguyen
J Women Aging
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 gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Steve Nguyen received $510 in industry payments from 2016 to 2017
CMS Open Payments shows 9 general payments to Dr. Nguyen from 4 drug and device companies from 2016 to 2017. Food and beverage make up the largest share, 100% of the total. Ironwood Pharmaceuticals, Inc paid the most, $236.
General payments to Dr. Nguyen by program year, 2016 to 2017
Companies that paid Dr. Nguyen the most, 2016 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Steve 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.
- Medical school
- Board certified in 1997 - 2025
- Board certified in 2024 - 2025
Source: Dmand AI Professional Profile Data
Dr. Steve Nguyen accepts plans from 8 insurance carriers
Dr. Nguyen is in network with 8 carriers, including Blue Cross Blue Shield of Michigan, LA Care and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- LA Care
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Molina
- Regence Health Plans
- CMS Medicare
- Humana
Plan types Dr. Nguyen accepts, by number of carriers
- Medicare7
- HMO4
- PPO4
- Medicaid1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Steve 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 Utilization Data (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. Steve 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 Nguyen's NPI number?
Dr. Steve Nguyen's NPI number is 1649357732. It was assigned on November 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Steve Nguyen?
Dr. Steve Nguyen is a gastroenterologist in Alhambra, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Steve Nguyen practice?
Dr. Nguyen practices at 100 S Raymond Ave, Alhambra, CA 91801. Dr. Nguyen's primary practice is Alhambra Hospital Medical Center in Alhambra, California, part of AHMC Healthcare. Dmand AI also links Dr. Nguyen to 4 hospitals, 1 physician office and 1 skilled nursing facility.
What is Dr. Steve Nguyen's office phone number?
The practice phone on file for Dr. Nguyen is (626) 570-1606.
What is Dr. Steve Nguyen's medical license number?
Dr. Nguyen holds California license 20A7028.
Which hospitals is Dr. Steve Nguyen affiliated with?
Dr. Nguyen practices at Alhambra Hospital Medical Center in Alhambra, California. Dr. Nguyen is also affiliated with AHMC San Gabriel Valley Medical Center. Dmand AI links Dr. Nguyen to 4 more hospitals.
Does Dr. Steve Nguyen accept Medicare?
Yes. CMS data shows Dr. Nguyen billed Medicare for 359 services in 2024.
How many Medicare patients does Dr. Steve Nguyen see?
CMS counts 156 Medicare patients who saw Dr. Nguyen in 2024, with an average age of 71.
Is Dr. Steve Nguyen board certified?
Yes. Dr. Nguyen is board certified in 1997 - 2025 by the CA State License.
What services does Dr. Steve Nguyen bill to Medicare?
In 2024, Dr. Nguyen's most billed Medicare services were hospital inpatient care (99232), office visit, established patient (99214) and hospital inpatient care (99222).
Show 7 more questionsShow fewer questions
Where did Dr. Steve Nguyen go to medical school?
Dr. Nguyen graduated from WesternU College of Osteopathic Medicine of the Pacific in 1995.
What drugs does Dr. Steve Nguyen prescribe most?
In 2024 Medicare Part D data, Dr. Nguyen's most prescribed drugs by claims were Entecavir, Gavilyte-G and Sod Sulf-Potass Sulf-Mag Sulf.
Has Dr. Steve Nguyen received payments from drug or device companies?
CMS Open Payments shows $510 in general payments to Dr. Nguyen from 4 companies from 2016 to 2017. The largest total came from Ironwood Pharmaceuticals, Inc.
How long has Dr. Steve Nguyen been practicing?
Dr. Nguyen graduated from medical school in 1995, 31 years ago.
Does Dr. Steve Nguyen do research?
Dmand AI links 19 publications to Dr. Nguyen, published from 2017 to 2025.
Who does Dr. Steve Nguyen publish with?
Dr. Nguyen's most frequent co-authors are Joann E. Manson, MD (4 shared papers), Eric Anders Whitsel, MD, MPH (4 shared papers) and Matthew A. Allison, MD (3 shared papers).
What insurance does Dr. Steve Nguyen accept?
Dr. Nguyen is in network with 8 carriers, including Blue Cross Blue Shield of Michigan, LA Care and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
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