Quick answers
- Does Grant W. Jirka accept Medicare assignment?
- Medicare's clinician data says Grant W. Jirka may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- What is Grant W. Jirka's NPI number?
- 1326667346. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Grant W. Jirka works
Medicare's Facility Affiliation Data lists Grant W. Jirka at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Lac/Rancho Los Amigos National Rehabilitation CenterDowney, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 050717
- Los Angeles General Medical CenterLos Angeles, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050373
Practice locations
Addresses where Grant W. Jirka is enrolled with Medicare (CMS data updated October 2, 2026).
- 1441 Eastlake AveLos Angeles, CA 90089
- 880 N Alameda St, Apt 310Los Angeles, CA 90012
- PO Box, Suite 276950Sacramento, CA 95827
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Los Angeles
Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Nebraska College Of Medicine |
| Graduation year | 2020 (6 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1326667346 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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