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Internal Medicine

Christine K. Bui, DO

Sees patients in Ontario, CA · Fontana, CA · San Bernardino, CA · California

Summary

Christine K. Bui, DO (Internal Medicine) is enrolled with Medicare at 5 practice locations in Ontario, CA, Fontana, CA and San Bernardino, CA. NPI 1285095752. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Christine K. Bui, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
12Years since medical school (graduated 2014)
Lake Erie College Of Osteopathic Medicine, ErieMedical school
FemaleGender (as listed)
Unicare Community Health Center, Inc.Group practice

Quick answers

Where does Christine K. Bui see patients?
Medicare's clinician data lists 5 practice locations, including Ontario, CA, Fontana, CA and San Bernardino, CA. Call before your visit to confirm the address.
What is Christine K. Bui's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Christine K. Bui accept Medicare assignment?
Yes. Medicare's clinician data says Christine K. Bui accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Christine K. Bui?
(909) 467-1425, as listed in official Medicare / NPI Registry data.
What is Christine K. Bui's NPI number?
1285095752. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Christine K. Bui is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Christine K. Bui as a member of this group (CMS data updated 2026-10-02).

  • Unicare Community Health Center, Inc.64 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Ontario

Clinicians with the same Medicare primary specialty in Ontario, CA — not a recommendation.

All internal medicine doctors in Ontario →

Clinician information

CredentialDO
Medical schoolLake Erie College Of Osteopathic Medicine, Erie
Graduation year2014
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1285095752
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians