Quick answers
- Where does Hee Oh see patients?
- Medicare's clinician data lists 2 practice locations, including West Covina, CA and Rowland Heights, CA. Call before your visit to confirm the address.
- What is Hee Oh's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Hee Oh accept Medicare assignment?
- Yes. Medicare's clinician data says Hee Oh 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 Hee Oh offer telehealth?
- Medicare's clinician data says Hee Oh offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Hee Oh?
- (626) 962-2421, as listed in official Medicare / NPI Registry data.
- What is Hee Oh's NPI number?
- 1225106693. 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 Hee Oh is enrolled with Medicare (CMS data updated 2026-10-02).
- 1433 W Merced AveWest Covina, CA 91790 (626) 962‑2421
- 1722 Desire Ave, Suite 206Rowland Heights, CA 91748 (626) 962‑2421
Group practices
Medicare enrollment lists Hee Oh as a member of this group (CMS data updated 2026-10-02).
- Hee Yong Oh MD Inc2 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in West Covina
Clinicians with the same Medicare primary specialty in West Covina, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1968 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1225106693 |
| 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