MRS. CALAH SUSAN THOMAS PSY. D.
NPI 1770798589
Psychologist - Clinical in Walnut Creek, CA

Q: What is Calah Thomas's NPI number?

The NPI number for Calah Thomas is 1770798589. It was assigned to this individual provider in the NPPES registry on May 14, 2007.

Q: What is Calah Thomas's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Calah Thomas was last updated on January 3, 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.

Active since May 14, 2007PECOS Enrolled

710 S BROADWAY, SUITE, 205, WALNUT CREEK, CA 94596(925) 295-4145 Get Directions Write a Review

NPPES record last updated: January 3, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Mrs. Calah Susan Thomas Psy. D. NPPES

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

MRS. CALAH SUSAN THOMAS PSY. D. (NPI 1770798589) is an individual clinical provider in Walnut Creek, California, licensed in California (PSY#23249) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1770798589

Entity TypeIndividualFemale

Primary Taxonomy103TC0700X

Provider Legal NameMRS. CALAH SUSAN THOMASCredential: PSY. D.

Location Address710 S BROADWAY, SUITE, 205Walnut Creek, CA 94596-5294

Mailing Address1425 S Main StWalnut Creek, CA 94596-5318 · (925) 295-4145

Phone(925) 295-4145

Sole ProprietorNo

Enumeration DateMay 14, 2007

Last NPPES UpdateJanuary 3, 2022

✔ NPI 1770798589 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

License✔ Licensed in CA · PSY#23249

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.

710 S BROADWAY, Walnut Creek, CA 94596

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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)

Mrs. Calah Susan Thomas 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 Calah Thomas reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Permanente Medical Group Inc

17 mi

Internal Medicine

901 NEVIN
Richmond, CA 94801

Reassigned Medicare billing, California enrollment
20,078 clinicians in this Medicare group

NPI 1235226531 (510) 307-1555

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 94596 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

$202.35 typical visit price

range $69.00 – $202.35

Typical copayment $50.58 (range $17.25 – $50.58)

Most-billed visit code 99205

Established Patient

$119.48 typical visit price

range $23.44 – $166.46

Typical copayment $29.87 (range $5.86 – $41.61)

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.

ELIZABETH KRAMER LMFT

Marriage & Family Therapist

710 S BROADWAY
WALNUT CREEK, CA 94596

Contra Costa County (925) 274-9049

KATRINA DOMINGO PSY.D.

Psychologist

710 S BROADWAY, SUITE #209
WALNUT CREEK, CA 94596

Contra Costa County (925) 295-4901

DR. JENNIFER JO BARKIN PSY.D.

Psychologist (Clinical)

710 S BROADWAY, SUITE 300
WALNUT CREEK, CA 94596

Contra Costa County (925) 295-4145

MS. SUE ELLEN FLOOD LCSW

Social Worker (Clinical)

710 S BROADWAY
WALNUT CREEK, CA 94596

Contra Costa County (925) 295-5263

MR. LAWRENCE RICHARD FOSTER LMFT.

Counselor (Addiction (Substance Use Disorder))

710 S BROADWAY
WALNUT CREEK, CA 94596

Contra Costa County (925) 295-4619

CATHARINE ELIZABETH KIBIRA PH.D.

Psychologist (Addiction (Substance Use Disorder))

710 S BROADWAY
WALNUT CREEK, CA 94596

Contra Costa County (925) 295-4145

JESSICA SINGERMAN PSY.D.

Psychologist

710 S BROADWAY
WALNUT CREEK, CA 94596

Contra Costa County (925) 295-4145

KAISER PERMANENTE

Health Maintenance Organization

710 S BROADWAY
WALNUT CREEK, CA 94596

Contra Costa County (925) 295-2960

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 Calah Thomas's NPI number?

The NPI number for Calah Thomas is 1770798589. It was assigned to this individual provider in the NPPES registry on May 14, 2007.

Where is Calah Thomas located?

Calah Thomas practices at 710 S Broadway Suite, 205, Walnut Creek, CA 94596. The listed phone number is (925) 295-4145.

What is Calah Thomas's specialty?

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

Is Calah Thomas enrolled in Medicare?

Yes. Calah Thomas is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Calah Thomas's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Calah Thomas reassigns Medicare benefits to Permanente Medical Group Inc (Richmond, 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 Calah Thomas'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 Calah Thomas was last updated on January 3, 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.