Christopher Bui, MD
NPI 1811061468 · Gastroenterology Physician · Santa Ana, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christopher Bui, MD is a Gastroenterology Physician provider in Santa Ana, CA (NPI 1811061468).
Provider details
- NPI number
- 1811061468
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A49625 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,973 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,510 | $133 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 183 | $171 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 102 | $134 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 49 | $198 |
| Ultrasound Scan of Organ Tissue for Measuring Elasticity76981 | 43 | $114 |
| Diagnostic Exam of Large Bowel Using a Flexible Endoscope |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 60 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Famotidine | 2,371 | 621 |
| Lipase/Protease/Amylasebrand: Creon | 1,112 | 221 |
| Dexlansoprazolebrand: Dexlansoprazole Dr | 1,096 | 200 |
| Pantoprazole Sodium | 885 | 269 |
| Linaclotidebrand: Linzess | 873 | 176 |
| Tenofovir Alafenamidebrand: Vemlidy | 841 | 98 |
| Lipase/Protease/Amylasebrand: Zenpep |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$18,610 across 127 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-17
- Last updated
- 2014-04-03
Frequently asked questions
- What is Christopher Bui's NPI number?
- Christopher Bui's National Provider Identifier (NPI) is 1811061468, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Bui's specialty?
- Christopher Bui is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher Bui located?
- Christopher Bui's practice location on file with NPPES is 202 N. Euclid, Santa Ana, CA 92703-3090.
- What is Christopher Bui's phone number?
- The practice phone number listed in the NPPES registry for Christopher Bui is (714) 531-3535.
- Does Christopher Bui accept Medicare?
- Christopher Bui is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christopher Bui's NPI active?
- Yes — Christopher Bui's NPI (1811061468) is active in the NPPES registry as of the last update on 2014-04-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.