Dr. Christopher Duong Bui, MD
- Medicare services, 2024
- 1,973
- Medicare patients, 2024
- 973
- Part D claims, 2024
- 12,234
- Publications
- 1
- Hospital affiliations
- 2
- Practice address
- 14571 Magnolia Street Suite 107, Westminster, CA 92683
- Practice phone
- Call (714) 387-2778
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Magnolia Surgery Center - Westminster
Surgery Center - Medicare-Certified · Westminster, California
Find Dr. Bui's professional email, personal email and mobile number
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Dr. Christopher Duong Bui is a gastroenterologist in Westminster, California
Dr. Bui practices at Magnolia Surgery Center - Westminster in Westminster, California.
Dr. Bui's NPI, 1811061468, was assigned on November 17, 2006. Dr. Bui holds California license A49625.
- NPI
- 1811061468NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7012178320
- NPI enumeration date
- November 17, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (714) 387-2778
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Christopher Duong Bui practices at Magnolia Surgery Center - Westminster in Westminster, California
Dr. Bui's primary practice is Magnolia Surgery Center - Westminster, at 14571 Magnolia Street Suite 107, Westminster, CA 92683. The practice phone is (714) 387-2778.
- Magnolia Surgery Center - Westminster14571 Magnolia Street Suite 107, Westminster, CA 92683Phone(714) 387-2778
Source: Dmand AI Affiliation Data
Dr. Christopher Duong Bui is affiliated with 4 sites of care and 1 medical group
Dr. Bui's primary practice is Magnolia Surgery Center - Westminster in Westminster, California. Dr. Bui is also affiliated with UCI Health - Orange. The medical group on file is Duong Christopher Bui MD Inc. Dmand AI also links Dr. Bui to 1 more hospital 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. Christopher Duong Bui's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Bui practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Magnolia Surgery Center - Westminster | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Christopher Duong Bui is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Bui's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Bui is licensed in California.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
Gastroenterologists near Dr. Bui
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. Christopher Duong Bui billed Medicare for 1,973 services in 2024
CMS data shows 1,973 Medicare services from Dr. Bui across 8 procedure codes in 2024, for 973 Medicare patients. Medicare paid $214,036 for them.
Dr. Bui's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2,2792024: 1,69326%
- Surgery
- 2023: 3032024: 23722%
- Imaging
- 2023: 02024: 43
Where Dr. Bui's Medicare services took place, 2024
- In an office1,74789%
- In a facility22611%
Dr. Bui compared with the California median for gastroenterologists, 2024
- Dr. Bui
- California median
- Medicare services
- 1,973vs 5863.4 times
- Medicare patients
- 973vs 3023.2 times
- Part D claims
- 12,023vs 38031.6 times
Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.
Dr. Bui'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. Bui and other gastroenterologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Christopher Duong Bui treated 973 Medicare patients in 2024, average age 77
CMS counts 973 Medicare patients who saw Dr. Bui in 2024. The largest group is 75 to 84, with 462 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 95% are also on Medicaid. Their average risk score is 1.45, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Bui's median patient age at 71, with 57% women.
Dr. Bui's Medicare patients by age, 2024
Dr. Bui's Medicare patients by sex, 2024
- Women56758%
- Men40642%
Chronic conditions among Dr. Bui's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis61%
- Diabetes55%
- Chronic kidney disease38%
- Osteoporosis36%
- Ischemic heart disease32%
- COPD20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Bui's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
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. Christopher Duong Bui wrote 12,234 Medicare Part D claims in 2024
In 2024, Dr. Bui wrote 12,234 Medicare Part D claims for 1,401 patients. 62% of them were for generic drugs. CMS names the drug for 12,023 of them, across 60 drugs with 11 or more claims each, at $6,009,787 in total drug cost. In 2023, CMS named 12,537 claims across 54 drugs.
Dr. Bui's Part D claims by kind of drug, 2024
- Generic7,589 claims62%
- Brand-name and other4,645 claims38%
Dr. Bui'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. Bui's Part D claims, 2024
- Antibiotics2%232 of 12,234 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: 12,5372024: 12,0234%
Drugs named by CMS: 60 in 2024, 54 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. Christopher Duong Bui ranks in the 94th percentile for colonoscopy in Medicare
Dr. Bui accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 218 procedures of colonoscopy by Dr. Bui, more than 94% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Bui ranks in Medicare procedure volume
- Colonoscopy
- 94th percentile218 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 84th percentile145 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Christopher Duong Bui has 1 publication on record
Dmand AI links 1 paper to Dr. Bui in 2013. Dr. Bui's most frequent co-authors are Huy Ngoc Trinh, MD and Carrie Wong, MD.
Dr. Bui's most frequent co-authors
Recent publications by Dr. Bui
See who Dr. Bui researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Bui 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. Christopher Duong Bui received $258,894 in industry payments from 2016 to 2025
CMS Open Payments shows 1,598 general payments to Dr. Bui from 51 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 74% of the total. Gilead Sciences, Inc. paid the most, $109,724.
General payments to Dr. Bui by program year, 2016 to 2025
General payments to Dr. Bui by kind, 2016 to 2025
- Speaker and faculty fees$192,30074%
- Food and beverage$41,48216%
- Consulting fees$9,4164%
- Education speaker fees$9,0003%
- Other$6,6333%
Companies that paid Dr. Bui the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Christopher Duong Bui'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 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) |
| 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. Christopher Duong Bui
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. Christopher Duong Bui's NPI number?
Dr. Christopher Duong Bui's NPI number is 1811061468. It was assigned on November 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Christopher Duong Bui?
Dr. Christopher Duong Bui is a gastroenterologist in Westminster, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Christopher Duong Bui practice?
Dr. Bui practices at 14571 Magnolia Street Suite 107, Westminster, CA 92683. Dr. Bui's primary practice is Magnolia Surgery Center - Westminster in Westminster, California. Dmand AI also links Dr. Bui to 1 hospital and 1 group practice or clinic.
What is Dr. Christopher Duong Bui's office phone number?
The practice phone on file for Dr. Bui is (714) 387-2778.
What is Dr. Christopher Duong Bui's medical license number?
Dr. Bui holds California license A49625.
Which hospitals is Dr. Christopher Duong Bui affiliated with?
Dr. Bui is affiliated with UCI Health - Orange. Dmand AI links Dr. Bui to 1 more hospital.
What medical group is Dr. Christopher Duong Bui part of?
Dr. Bui is linked to Duong Christopher Bui MD Inc.
Does Dr. Christopher Duong Bui accept Medicare?
Yes. CMS data shows Dr. Bui billed Medicare for 1,973 services in 2024, and Dr. Bui accepts Medicare assignment.
How many Medicare patients does Dr. Christopher Duong Bui see?
CMS counts 973 Medicare patients who saw Dr. Bui in 2024, with an average age of 77.
What services does Dr. Christopher Duong Bui bill to Medicare?
In 2024, Dr. Bui's most billed Medicare services were office visit, established patient (99214), office visit, new patient (99204) and surgery: digestive system (43239).
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What drugs does Dr. Christopher Duong Bui prescribe most?
In 2024 Medicare Part D data, Dr. Bui's most prescribed drugs by claims were Famotidine, Creon and Dexlansoprazole DR.
Has Dr. Christopher Duong Bui received payments from drug or device companies?
CMS Open Payments shows $258,894 in general payments to Dr. Bui from 51 companies from 2016 to 2025. The largest total came from Gilead Sciences, Inc.
How long has Dr. Christopher Duong Bui been practicing?
Dr. Bui graduated from medical school in 1982, 44 years ago.
Does Dr. Christopher Duong Bui do research?
Dmand AI links 1 publication to Dr. Bui.
Who does Dr. Christopher Duong Bui publish with?
Dr. Bui's most frequent co-authors are Huy Ngoc Trinh, MD (1 shared paper) and Carrie Wong, MD (1 shared paper).
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