Michael Gilewski, PHD
NPI 1811993389 · Clinical Neuropsychologist · Loma Linda, CA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Gilewski, PHD is a Clinical Neuropsychologist provider in Loma Linda, CA (NPI 1811993389).
Provider details
- NPI number
- 1811993389
- Entity type
- Individual
- Primary specialty
- Clinical NeuropsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Male
- Sole proprietor
- No
- License
- PSY 9194 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
21 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
873 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) |
|---|---|---|
| Treatment of Behavior Impacting Health, Each Additional 15 Minutes96159 | 541 | $23 |
| Treatment of Behavior Impacting Health, Initial 30 Minutes96158 | 298 | $67 |
| Assessment of Health Behavior96156 | 34 | $92 |
Typical Medicare-allowed amounts for these services range $23–$92 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-06-21
- Last updated
- 2022-07-21
Frequently asked questions
- What is Michael Gilewski's NPI number?
- Michael Gilewski's National Provider Identifier (NPI) is 1811993389, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Gilewski's specialty?
- Michael Gilewski is listed in the NPPES registry with a primary specialty of Clinical Neuropsychologist (Behavioral Health & Social Service Providers).
- Where is Michael Gilewski located?
- Michael Gilewski's practice location on file with NPPES is 11406 Loma Linda Dr Rm 105, Loma Linda, CA 92354-3711.
- What is Michael Gilewski's phone number?
- The practice phone number listed in the NPPES registry for Michael Gilewski is (909) 558-6220.
- Does Michael Gilewski accept Medicare?
- Michael Gilewski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Gilewski's NPI active?
- Yes — Michael Gilewski's NPI (1811993389) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.