Quick answers
- Which hospitals does Richard M. Treger work at?
- Medicare's official clinician data lists Richard M. Treger at 1 hospital: Kaiser Foundation Hospital - Los Angeles. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Richard M. Treger see patients?
- Medicare's clinician data lists 1 practice location in Pasadena, CA. Call before your visit to confirm the address.
- What is Richard M. Treger's specialty?
- Medicare lists Nephrology as the primary specialty, and also Internal Medicine.
- Does Richard M. Treger accept Medicare assignment?
- Medicare's clinician data says Richard M. Treger may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is Richard M. Treger's NPI number?
- 1194922625. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Richard M. Treger works
Medicare's Facility Affiliation Data lists Richard M. Treger at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Kaiser Foundation Hospital - Los AngelesLos Angeles, CA · Acute Care Hospital · CCN 050138
Practice locations
Addresses where Richard M. Treger is enrolled with Medicare (CMS data updated 2026-10-02).
- Phr Group Provider Enrollment UnitPasadena, CA 91188
Specialties
- Nephrologyprimary
- Internal Medicinealso
Other nephrologists in Pasadena
Clinicians with the same Medicare primary specialty in Pasadena, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2001 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1194922625 |
| 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