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DR. CHRISTOPHER DUONG BUI MD
NPI 1811061468
Internal Medicine - Gastroenterology in Santa Ana, CA

Active since November 17, 2006PECOS EnrolledAccepts Medicare Assignment
30/100
CMS Quality Rating
202 N. EUCLID, 201, SANTA ANA, CA 92703(714) 531-3535(714) 531-5950 Get Directions Write a Review

NPPES record last updated: April 3, 2014. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Christopher Duong Bui Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. CHRISTOPHER DUONG BUI MD (NPI 1811061468) is an individual gastroenterology provider in Santa Ana, California, licensed in California (A49625) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1982).

NPPES Registry Identity

NPI1811061468
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. CHRISTOPHER DUONG BUICredential: MD
Location Address202 N. EUCLID, 201Santa Ana, CA 92703-3090
Mailing Address202 N. Euclid, 201Santa Ana, CA 92703-3090 · (714) 531-3535 · Fax (714) 531-5950
Phone(714) 531-3535
Fax(714) 531-5950
Sole ProprietorYes
Medical School CMSOtherGraduated 1982
Enumeration DateNovember 17, 2006
Last NPPES UpdateApril 3, 2014
✔ NPI 1811061468 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in CA · A49625
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
202 N. EUCLID, Santa Ana, CA 92703
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Other Names 1

Former Name (1)Dr. Duong Xuan Bui Md

Other Identifiers 2

Other1568738219CA · Npi
Medicare UPIN59153

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Christopher Duong Bui Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7012178320
PECOS Enrollment IDI20120413000172
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 8

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
1,510 services862 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
183 services183 patients
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239
This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.
102 services102 patients
Biopsy of large bowel using a flexible endoscope 45380
A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.
49 services49 patients
Ultrasound scan of organ tissue for measuring elasticity 76981
An ultrasound scan of organ tissue measures elasticity, or flexibility. This non-invasive procedure uses sound waves to create images of the inside of your body. It helps in assessing the health of various organs by detecting changes in their stiffness or softness.
43 services43 patients
Diagnostic exam of large bowel using a flexible endoscope 45378
This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.
39 services39 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92703 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

30/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality0
Improvement Activities0
Cost100

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Christopher Bui's NPI number?

The NPI number for Christopher Bui is 1811061468. It was assigned to this individual provider in the NPPES registry on November 17, 2006. The provider is also known as Dr. Duong Xuan Bui MD.

Where is Christopher Bui located?

Christopher Bui practices at 202 N. Euclid 201, Santa Ana, CA 92703. The listed phone number is (714) 531-3535.

What is Christopher Bui's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Christopher Bui enrolled in Medicare?

Yes. Christopher Bui is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Christopher Bui was last updated on April 3, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.