Quick answers
- Which hospitals does Sam Tonthat work at?
- Medicare's official clinician data lists Sam Tonthat at 3 hospitals: Hoag Memorial Hospital Presbyterian, Memorialcare Saddleback Medical Center and Providence Mission Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Sam Tonthat see patients?
- Medicare's clinician data lists 3 practice locations, including Newport Beach, CA, Irvine, CA and Orange, CA. Call before your visit to confirm the address.
- What is Sam Tonthat's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Nephrology.
- Does Sam Tonthat accept Medicare assignment?
- Yes. Medicare's clinician data says Sam Tonthat 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 Sam Tonthat?
- (949) 764-4624, as listed in official Medicare / NPI Registry data.
- What is Sam Tonthat's NPI number?
- 1699139782. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Sam Tonthat works
Medicare's Facility Affiliation Data lists Sam Tonthat at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Hoag Memorial Hospital PresbyterianNewport Beach, CA · Acute Care Hospital · CCN 050224
- Memorialcare Saddleback Medical CenterLaguna Hills, CA · Acute Care Hospital · CCN 050603
- Providence Mission HospitalMission Viejo, CA · Acute Care Hospital · CCN 050567
Practice locations
Addresses where Sam Tonthat is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Hoag DrNewport Beach, CA 92663 (949) 764‑4624
- 16200 Sand Canyon AveIrvine, CA 92618 (949) 764‑4624
- 500 S Main St, Suite 101Orange, CA 92868 (714) 836‑4204
Group practices
Medicare enrollment lists Sam Tonthat as a member of these groups (CMS data updated 2026-10-02).
- Newport Critical Care Physicians Medical Group Inc17 clinicians in the group
- Kevin Pham MD Inc5 clinicians in the group
Specialties
- Internal Medicineprimary
- Nephrologyalso
Other internal medicine doctors in Newport Beach
Clinicians with the same Medicare primary specialty in Newport Beach, CA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2016 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1699139782 |
| 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