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GRAYSON JAMES LEWIS PSY.D.
NPI 1790160182
Psychologist - Clinical in San Bernardino, CA

Active since July 27, 2015PECOS Enrolled
1950 S SUNWEST LN, SAN BERNARDINO, CA 92408(909) 252-4010 Get Directions Write a Review

NPPES record last updated: February 11, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Feb 11, 2022, Mar 15, 2021, Feb 29, 2016 and 1 more (4 updates tracked since 2016).

About Grayson James Lewis Psy.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GRAYSON JAMES LEWIS PSY.D. (NPI 1790160182) is an individual clinical provider in San Bernardino, California, licensed in California (PSY32222) and active in the NPI registry since July 2015. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1790160182
Entity TypeIndividualMale
Primary Taxonomy103TC0700X
Provider Legal NameGRAYSON JAMES LEWISCredential: PSY.D.
Location Address1950 S SUNWEST LNSan Bernardino, CA 92408-3258
Mailing Address1305 Tommydon StStockton, CA 95210-3364 · (209) 476-3341 · Fax (209) 476-3528
Phone(909) 252-4010
Sole ProprietorYes
Enumeration DateJuly 27, 2015
Last NPPES UpdateFebruary 11, 20224 updates tracked since enumeration
NPPES CertifiedMarch 15, 2021
✔ NPI 1790160182 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
License✔ Licensed in CA · PSY32222
Definition
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
1950 S SUNWEST LN, San Bernardino, CA 92408
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Grayson James Lewis Psy.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Grayson Lewis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Permanente Medical Group Inc
348 mi
Internal Medicine
710 LAWRENCE EXPRESSWAY
Santa Clara, CA 95051
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1073606299 (408) 851-1000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92408 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$179.42 typical visit price
range $59.60 – $179.42
Typical copayment $44.85 (range $14.90 – $44.85)
Most-billed visit code 99205
Established Patient
$104.64 typical visit price
range $19.37 – $146.42
Typical copayment $26.16 (range $4.84 – $36.60)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JENNIFER HEADLAND
Student in an Organized Health Care Education/Training Program
1950 S SUNWEST LN
SAN BERNARDINO, CA 92408
San Bernardino County (909) 252-4010
SUSAN NMI DAVIS LMFT
Marriage & Family Therapist
1950 S SUNWEST LN, SUITE 200
SAN BERNARDINO, CA 92408
San Bernardino County (909) 252-4044
RUBEN DIEGO GONZALEZ
Social Worker (Clinical)
1950 S SUNWEST LN, SUITE 200
SAN BERNARDINO, CA 92408
San Bernardino County (909) 252-4010
ROBERT KLACANSKY
Student in an Organized Health Care Education/Training Program
1950 S SUNWEST LN, SUITE 200
SAN BERNARDINO, CA 92408
San Bernardino County (909) 252-4010
MR. JUAN A FIGUEROA JR.
Student in an Organized Health Care Education/Training Program
1950 S SUNWEST LN
SAN BERNARDINO, CA 92408
San Bernardino County (909) 252-4010
KYLE YOUNG
Student in an Organized Health Care Education/Training Program
1950 S SUNWEST LN
SAN BERNARDINO, CA 92408
San Bernardino County (909) 252-4010
LISA HAPER
Student in an Organized Health Care Education/Training Program
1950 S SUNWEST LN
SAN BERNARDINO, CA 92408
San Bernardino County (909) 252-4010
MEGAN GRISSO
Student in an Organized Health Care Education/Training Program
1950 S SUNWEST LN
SAN BERNARDINO, CA 92408
San Bernardino County (909) 252-4010

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Grayson Lewis's NPI number?

The NPI number for Grayson Lewis is 1790160182. It was assigned to this individual provider in the NPPES registry on July 27, 2015.

Where is Grayson Lewis located?

Grayson Lewis practices at 1950 S Sunwest Ln, San Bernardino, CA 92408. The listed phone number is (909) 252-4010.

What is Grayson Lewis's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Is Grayson Lewis enrolled in Medicare?

Yes. Grayson Lewis is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Grayson Lewis's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Grayson Lewis reassigns Medicare benefits to Permanente Medical Group Inc (Santa Clara, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Grayson Lewis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Grayson Lewis was last updated on February 11, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.