Quick answers
- Which hospitals does Leonard Ong work at?
- Medicare's official clinician data lists Leonard Ong at 5 hospitals: Enloe Health, Marietta Memorial Hospital, Novant Health Forsyth Medical Center, Novant Health Thomasville Medical Center and UNC Health Nash. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Leonard Ong see patients?
- Medicare's clinician data lists 23 practice locations, including Roseville, CA, Duarte, CA and Grass Valley, CA. Call before your visit to confirm the address.
- What is Leonard Ong's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Leonard Ong accept Medicare assignment?
- Yes. Medicare's clinician data says Leonard Ong 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 Leonard Ong?
- (916) 535-2030, as listed in official Medicare / NPI Registry data.
- What is Leonard Ong's NPI number?
- 1376854281. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Leonard Ong works
Medicare's Facility Affiliation Data lists Leonard Ong at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Enloe HealthChico, CA · Acute Care Hospital · CCN 050039
- Marietta Memorial HospitalMarietta, OH · Acute Care Hospital · CCN 360147
- Novant Health Forsyth Medical CenterWinston-Salem, NC · Acute Care Hospital · CCN 340014
- Novant Health Thomasville Medical CenterThomasville, NC · Acute Care Hospital · CCN 340085
- UNC Health NashRocky Mount, NC · Acute Care Hospital · CCN 340147
Practice locations
Addresses where Leonard Ong is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 23; the Medicare profile lists all.
- 1380 Lead Hill Blvd, Suite 100Roseville, CA 95661 (916) 535‑2030
- 1500 Duarte RdDuarte, CA 91010 (626) 256‑4673
- 155 Glasson Way, Suite L 10Grass Valley, CA 95945 (530) 274‑6677
- 1600 Esplanade, Suite CChico, CA 95926 (530) 332‑4470
- 1635 Creekside Dr, Suite 100Folsom, CA 95630 (916) 986‑5200
Group practices
Medicare enrollment lists Leonard Ong as a member of these groups (CMS data updated 2026-10-02).
- Advocate Health and Hospitals Corporation3,118 clinicians in the group
- Dignity Health Medical Foundation1,184 clinicians in the group
- UNC Physicians Network LLC998 clinicians in the group
- City of Hope Medical Foundation982 clinicians in the group
- Queens University Medical Group614 clinicians in the group
- Enloe Medical Center333 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Roseville
Clinicians with the same Medicare primary specialty in Roseville, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2010 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1376854281 |
| 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