Michael Greas
NPI 1982059168 · Anatomic Pathology Physician · Loma Linda, CA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Greas is a Anatomic Pathology Physician provider in Loma Linda, CA (NPI 1982059168).
Provider details
- NPI number
- 1982059168
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- A157365 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,438 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 906 | $75 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 116 | $37 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 88 | $27 |
| Special Stained Specimen Slides to Examine Tissue Including Interpretation and Report88313 | 73 | $12 |
| Pathology Examination of Tissue Using a Microscope, Moderately Low Complexity88304 | 54 | $45 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 43 | $40 |
Practice location
Mailing address
Additional practice locations (1)
- 1100 N. State StreetClinic Tower - A7e (department of Pathology)Los Angeles, CA 90033Phone: (323) 409-7150
Registry dates
- Enumerated
- 2016-04-26
- Last updated
- 2024-04-30
- Certified
- 2020-09-04
Frequently asked questions
- What is Michael Greas's NPI number?
- Michael Greas's National Provider Identifier (NPI) is 1982059168, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Greas's specialty?
- Michael Greas is listed in the NPPES registry with a primary specialty of Anatomic Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Greas located?
- Michael Greas's practice location on file with NPPES is 11234 Anderson St, Loma Linda, CA 92354-2804.
- What is Michael Greas's phone number?
- The practice phone number listed in the NPPES registry for Michael Greas is (909) 558-4094.
- Does Michael Greas accept Medicare?
- Michael Greas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Greas's NPI active?
- Yes — Michael Greas's NPI (1982059168) is active in the NPPES registry as of the last update on 2024-04-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.