Grayson Lewis, PSY.D.
NPI 1790160182 · Clinical Psychologist · San Bernardino, CA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grayson Lewis, PSY.D. is a Clinical Psychologist provider in San Bernardino, CA (NPI 1790160182).
Provider details
- NPI number
- 1790160182
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D.
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Behavioral Health & Social Service Providers
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-07-27
- Last updated
- 2022-02-11
- Certified
- 2021-03-15
Frequently asked questions
- What is Grayson Lewis's NPI number?
- Grayson Lewis's National Provider Identifier (NPI) is 1790160182, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grayson Lewis's specialty?
- Grayson Lewis is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Grayson Lewis located?
- Grayson Lewis's practice location on file with NPPES is 1950 S Sunwest Ln, San Bernardino, CA 92408-3258.
- What is Grayson Lewis's phone number?
- The practice phone number listed in the NPPES registry for Grayson Lewis is (909) 252-4010.
- Does Grayson Lewis accept Medicare?
- Grayson Lewis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grayson Lewis's NPI active?
- Yes — Grayson Lewis's NPI (1790160182) is active in the NPPES registry as of the last update on 2022-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.