Am J Gastroenterol
Dr. Ken Duong Nguyen, MD
- Medicare services, 2024
- 951
- Medicare patients, 2024
- 431
- Part D claims, 2024
- 1,909
- Publications
- 2
- Hospital affiliations
- 1
- Practice address
- 3445 Pacific Coast Highway, Suite 110, Torrance, CA 90505
- Practice phone
- Call (310) 325-8054
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Coast Surgery Center of South Bay
Surgery Center - Medicare-Certified · Torrance, 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 Duong Nguyen is a gastroenterologist in San Diego, California
Dr. Nguyen practices at Coast Surgery Center of South Bay in Torrance, California.
Dr. Nguyen's NPI, 1205193828, was assigned on April 20, 2012. Dr. Nguyen graduated from Boston University School Of Medicine in 2012. Dr. Nguyen's California license number on file is A127222.
- NPI
- 1205193828NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2062644487
- NPI enumeration date
- April 20, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (310) 325-8054
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ken Duong Nguyen practices in Torrance and San Diego
Dr. Nguyen's primary practice is Coast Surgery Center of South Bay, at 3445 Pacific Coast Highway, Suite 110, Torrance, CA 90505. The practice phone is (310) 325-8054. Dr. Nguyen also practices at Coast Surgery Center, 3444 Kearny Villa Rd, San Diego, CA 92123.
- Coast Surgery Center of South BayPrimary3445 Pacific Coast Highway, Suite 110, Torrance, CA 90505Phone(310) 325-8054
- Coast Surgery Center3444 Kearny Villa Rd, San Diego, CA 92123 · San Diego CountyPhone(858) 268-3566
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Ken Duong Nguyen is affiliated with 4 sites of care and 2 medical groups
Dr. Nguyen's primary practice is Coast Surgery Center of South Bay in Torrance, California. Dr. Nguyen is also affiliated with USC Arcadia Hospital. The medical group on file is Unio Specialty Care, Urology, Encinitas (formerly Genesis Healthcare Partners). Dmand AI also links Dr. Nguyen to 1 more group practice or clinic, 1 ambulatory surgery center and 1 medical group, 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. Ken Duong 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 |
|---|---|
| Coast Surgery Center of South Bay | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ken Duong 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 gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. Nguyen's licenses on file in 3 states: California, Arizona and Texas.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
- Arizona license
- Texas license
Clinical focus
Dmand AI lists acid reflux, acute gallbladder or bile duct inflammation, acute gastroduodenitis, chronic indigestion, chronic inflammatory bowel disease (IBD), cirrhosis of the liver, colonoscopy and fatty liver 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. Ken Duong Nguyen billed Medicare for 951 services in 2024
CMS data shows 951 Medicare services from Dr. Nguyen across 19 procedure codes in 2024, for 431 Medicare patients. Medicare paid $101,425 for them.
Dr. Nguyen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 8092024: 57928%
- Surgery
- 2023: 3412024: 25924%
- Other services
- 2023: 362024: 6067%
- Imaging
- 2023: 452024: 5318%
- Tests and treatments
- 2023: 222024: 0100%
Where Dr. Nguyen's Medicare services took place, 2024
- In an office62466%
- In a facility32734%
Dr. Nguyen compared with the California median for gastroenterologists, 2024
- Dr. Nguyen
- California median
- Medicare services
- 951vs 58662% above
- Medicare patients
- 431vs 30243% above
- Part D claims
- 1,687vs 3804.4 times
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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Nguyen and other gastroenterologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ken Duong Nguyen treated 431 Medicare patients in 2024, average age 73
CMS counts 431 Medicare patients who saw Dr. Nguyen in 2024. The largest group is 65 to 74, with 222 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 76% are also on Medicaid. Their average risk score is 1.53, 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 62, with 53% women.
Dr. Nguyen's Medicare patients by age, 2024
Dr. Nguyen's Medicare patients by sex, 2024
- Women24958%
- Men18242%
Chronic conditions among Dr. Nguyen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes50%
- Arthritis45%
- Chronic kidney disease39%
- Ischemic heart disease32%
- Osteoporosis31%
- COPD22%
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 62
Patient panel by sex, all payers
- Women53%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ken Duong Nguyen wrote 1,909 Medicare Part D claims in 2024
In 2024, Dr. Nguyen wrote 1,909 Medicare Part D claims for 542 patients. 65% of them were for generic drugs. CMS names the drug for 1,687 of them, across 31 drugs with 11 or more claims each, at $905,150 in total drug cost. In 2023, CMS named 1,619 claims across 32 drugs.
Dr. Nguyen's Part D claims by kind of drug, 2024
- Generic1,250 claims65%
- Brand-name and other659 claims35%
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
- Antibiotics4%76 of 1,909 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: 1,6192024: 1,6874%
Drugs named by CMS: 31 in 2024, 32 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. Ken Duong Nguyen ranks in the 89th percentile for colonoscopy in Medicare
Dr. Nguyen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Nguyen as offering telehealth. CMS counts 151 procedures of colonoscopy by Dr. Nguyen, more than 89% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Nguyen ranks in Medicare procedure volume
- Colonoscopy
- 89th percentile151 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 80th percentile117 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Ken Duong Nguyen has 2 publications on record
Dmand AI links 2 papers to Dr. Nguyen in 2014. Dr. Nguyen's most frequent co-author is Gobind Nath Sharma, MD.
Dr. Nguyen's most frequent co-authors
Recent publications by Dr. Nguyen
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. Ken Duong Nguyen received $193,196 in industry payments from 2016 to 2025
CMS Open Payments shows 954 general payments to Dr. Nguyen from 39 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 81% of the total. Abbvie Inc. paid the most, $122,761.
General payments to Dr. Nguyen by program year, 2016 to 2025
General payments to Dr. Nguyen by kind, 2016 to 2025
- Speaker and faculty fees$157,24581%
- Food and beverage$25,84313%
- Consulting fees$8,0254%
- Travel and lodging$1,9881%
- Education$950%
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 Duong Nguyen graduated from Boston University School Of Medicine
Dr. Nguyen graduated from Boston University School Of Medicine in 2012. Dr. Nguyen is a member of ACG, AGA and ASGE.
- Medical school
- Board certified in gastroenterology
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Ken Duong Nguyen accepts plans from 17 insurance carriers
Dr. Nguyen is in network with 17 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. Medicare plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Elevance
- United Healthcare
- HCSC
- Humana
- LA Care
- Blue Cross Blue Shield of Massachusetts
- +9 more carriersWith a free account
Plan types Dr. Nguyen accepts, by number of carriers
- Medicare11
- PPO10
- HMO9
- EPO4
- POS3
- Medicaid2
Source: Dmand AI Insurance Network Data
Sources for Dr. Ken Duong 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 Affiliation DataDmand AI Practice 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 National Downloadable File (CMS) (opens in a new tab)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. Ken Duong 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 Duong Nguyen's NPI number?
Dr. Ken Duong Nguyen's NPI number is 1205193828. It was assigned on April 20, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Ken Duong Nguyen?
Dr. Ken Duong Nguyen is a gastroenterologist in San Diego, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Ken Duong Nguyen practice?
Dr. Nguyen practices at 3445 Pacific Coast Highway, Suite 110, Torrance, CA 90505. Dr. Nguyen also practices at 3444 Kearny Villa Rd, San Diego, CA 92123. Dr. Nguyen's primary practice is Coast Surgery Center of South Bay in Torrance, California. Dmand AI also links Dr. Nguyen to 1 group practice or clinic, 1 ambulatory surgery center and 1 medical group.
What is Dr. Ken Duong Nguyen's office phone number?
The practice phone on file for Dr. Nguyen is (310) 325-8054.
What is Dr. Ken Duong Nguyen's medical license number?
Dr. Nguyen's California license number on file is A127222, one of the licenses on file in 3 states.
Which states has Dr. Ken Duong Nguyen been licensed in?
Dmand AI has state licenses on file for Dr. Nguyen in California (2013 to 2025), Arizona (2018 to 2021) and Texas (2015 to 2020).
Which hospitals is Dr. Ken Duong Nguyen affiliated with?
Dr. Nguyen is affiliated with USC Arcadia Hospital.
What medical group is Dr. Ken Duong Nguyen part of?
Dr. Nguyen is linked to Unio Specialty Care, Urology, Encinitas (formerly Genesis Healthcare Partners). Dmand AI links Dr. Nguyen to 1 more medical group.
Does Dr. Ken Duong Nguyen accept Medicare?
Yes. CMS data shows Dr. Nguyen billed Medicare for 951 services in 2024, and Dr. Nguyen accepts Medicare assignment.
Does Dr. Ken Duong Nguyen offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Nguyen as offering telehealth services.
Show 10 more questionsShow fewer questions
How many Medicare patients does Dr. Ken Duong Nguyen see?
CMS counts 431 Medicare patients who saw Dr. Nguyen in 2024, with an average age of 73.
Is Dr. Ken Duong Nguyen board certified?
Yes. Dr. Nguyen is board certified in gastroenterology by the American Board of Internal Medicine.
What services does Dr. Ken Duong Nguyen bill to Medicare?
In 2024, Dr. Nguyen's most billed Medicare services were office visit, established patient (99214), office visit, new patient (99204) and surgery: digestive system (43239).
Where did Dr. Ken Duong Nguyen go to medical school?
Dr. Nguyen graduated from Boston University School Of Medicine in 2012.
What drugs does Dr. Ken Duong Nguyen prescribe most?
In 2024 Medicare Part D data, Dr. Nguyen's most prescribed drugs by claims were Pantoprazole Sodium, Gavilyte-G and Omeprazole.
Has Dr. Ken Duong Nguyen received payments from drug or device companies?
CMS Open Payments shows $193,196 in general payments to Dr. Nguyen from 39 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Ken Duong Nguyen been practicing?
Dr. Nguyen graduated from medical school in 2012, 14 years ago.
Does Dr. Ken Duong Nguyen do research?
Dmand AI links 2 publications to Dr. Nguyen.
Who does Dr. Ken Duong Nguyen publish with?
Dr. Nguyen's most frequent co-authors are Gobind Nath Sharma, MD (1 shared paper).
What insurance does Dr. Ken Duong Nguyen accept?
Dr. Nguyen is in network with 17 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. Medicare plans come from the most carriers, 11. Check the plan with the practice before a visit.
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