Quick answers
- Which hospitals does Caroline Bui work at?
- Medicare's official clinician data lists Caroline Bui at 1 hospital: UCI Health-Orange. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Caroline Bui see patients?
- Medicare's clinician data lists 1 practice location in Orange, CA. Call before your visit to confirm the address.
- What is Caroline Bui's specialty?
- Medicare lists Rheumatology as the primary specialty.
- Does Caroline Bui accept Medicare assignment?
- Yes. Medicare's clinician data says Caroline 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.
- Does Caroline Bui offer telehealth?
- Medicare's clinician data says Caroline Bui offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Caroline Bui?
- (714) 456-7002, as listed in official Medicare / NPI Registry data.
- What is Caroline Bui's NPI number?
- 1821626482. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Caroline Bui works
Medicare's Facility Affiliation Data lists Caroline Bui at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- UCI Health-OrangeOrange, CA · Acute Care Hospital · CCN 050348
Practice locations
Addresses where Caroline Bui is enrolled with Medicare (CMS data updated 2026-10-02).
- 101 the City Dr SOrange, CA 92868 (714) 456‑7002
Group practices
Medicare enrollment lists Caroline Bui as a member of this group (CMS data updated 2026-10-02).
- UC Regents319 clinicians in the group
Specialties
- Rheumatologyprimary
Other rheumatologists in Orange
Clinicians with the same Medicare primary specialty in Orange, CA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Touro Un College Of Osteopathic Medicine, Vallejo |
| Graduation year | 2020 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1821626482 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians