Quick answers
- Which hospitals does Michael Greas work at?
- Medicare's official clinician data lists Michael Greas at 3 hospitals: Loma Linda University Medical Center, Loma Linda University Medical Center-Murrieta and Riverside University Health System-Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael Greas see patients?
- Medicare's clinician data lists 8 practice locations, including Loma Linda, CA, Burbank, CA and Moreno Valley, CA. Call before your visit to confirm the address.
- What is Michael Greas's specialty?
- Medicare lists Pathology as the primary specialty.
- Does Michael Greas accept Medicare assignment?
- Yes. Medicare's clinician data says Michael Greas 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 Michael Greas?
- (909) 558-6374, as listed in official Medicare / NPI Registry data.
- What is Michael Greas's NPI number?
- 1982059168. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael Greas works
Medicare's Facility Affiliation Data lists Michael Greas at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Loma Linda University Medical CenterLoma Linda, CA · Acute Care Hospital · CCN 050327
- Loma Linda University Medical Center-MurrietaMurrieta, CA · Acute Care Hospital · CCN 050770
- Riverside University Health System-Medical CenterMoreno Valley, CA · Acute Care Hospital · CCN 050292
Practice locations
Addresses where Michael Greas is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 8; the Medicare profile lists all.
- 11234 Anderson StLoma Linda, CA 92354
- 11370 Anderson StLoma Linda, CA 92354
- 11370 Anderson St, Suite 2960Loma Linda, CA 92354 (909) 558‑6374
- 2220 N Screenland Dr, Suite 101Burbank, CA 91505 (818) 842‑8000
- 26520 Cactus AveMoreno Valley, CA 92555
Group practices
Medicare enrollment lists Michael Greas as a member of these groups (CMS data updated 2026-10-02).
- Faculty Physicians and Surgeons of Llusm1,315 clinicians in the group
- Skin and Beauty Center Inc34 clinicians in the group
- Loma Linda University Pathology Medical Group, Inc18 clinicians in the group
Specialties
- Pathologyprimary
Other pathologists in Loma Linda
Clinicians with the same Medicare primary specialty in Loma Linda, 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) | 1982059168 |
| 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