Quick answers
- Where does Sung J. Yoo see patients?
- Medicare's clinician data lists 1 practice location in Diamond Bar, CA. Call before your visit to confirm the address.
- What is Sung J. Yoo's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does Sung J. Yoo accept Medicare assignment?
- Yes. Medicare's clinician data says Sung J. Yoo 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 Sung J. Yoo?
- (626) 913-1116, as listed in official Medicare / NPI Registry data.
- What is Sung J. Yoo's NPI number?
- 1437141587. 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 Sung J. Yoo is enrolled with Medicare (CMS data updated 2026-10-02).
- 1900 S Brea Canyon Rd, Unit BDiamond Bar, CA 91765 (626) 913‑1116
Specialties
- Gastroenterologyprimary
Other gastroenterologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Chicago, Pritzker School Of Medicine |
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1437141587 |
| 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
- 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