Quick answers
- Which hospitals does Nicolas Thor work at?
- Medicare's official clinician data lists Nicolas Thor at 3 hospitals: Arrowhead Regional Medical Center, Barstow Community Hospital and Pomona Valley Hospital Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Nicolas Thor see patients?
- Medicare's clinician data lists 2 practice locations, including Pomona, CA and Colton, CA. Call before your visit to confirm the address.
- What is Nicolas Thor's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Nicolas Thor accept Medicare assignment?
- Yes. Medicare's clinician data says Nicolas Thor 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 Nicolas Thor?
- (909) 630-7158, as listed in official Medicare / NPI Registry data.
- What is Nicolas Thor's NPI number?
- 1861078545. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Nicolas Thor works
Medicare's Facility Affiliation Data lists Nicolas Thor at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Arrowhead Regional Medical CenterColton, CA · Acute Care Hospital · CCN 050245
- Barstow Community HospitalBarstow, CA · Acute Care Hospital · CCN 050298
- Pomona Valley Hospital Medical CenterPomona, CA · Acute Care Hospital · CCN 050231
Practice locations
Addresses where Nicolas Thor is enrolled with Medicare (CMS data updated 2026-10-02).
- 1880 N Orange Grove AvePomona, CA 91767 (909) 630‑7158
- 400 N Pepper AveColton, CA 92324 (909) 580‑1000
Group practices
Medicare enrollment lists Nicolas Thor as a member of these groups (CMS data updated 2026-10-02).
- Quantum Healthcare Medical Associates Inc109 clinicians in the group
- Hospitalist Corporation of Inland Empire26 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Pomona
Clinicians with the same Medicare primary specialty in Pomona, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2021 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1861078545 |
| 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