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MR. DEREK THOMAS LCSW
NPI 1629994637
Social Worker - Clinical in Fallbrook, CA

Active since June 24, 2026PECOS Enrolled
194 SPANISH SPUR, FALLBROOK, CA 92028(760) 331-7484 Get Directions Write a Review

NPPES record last updated: July 6, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mr. Derek Thomas Lcsw NPPES

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

MR. DEREK THOMAS LCSW (NPI 1629994637) is an individual clinical provider in Fallbrook, California, licensed in California (138626) and active in the NPI registry since June 2026. He is enrolled in Medicare PECOS and is a graduate of Other (2023).

NPPES Registry Identity

NPI1629994637
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameMR. DEREK THOMASCredential: LCSW
Location Address194 SPANISH SPURFallbrook, CA 92028-8495
Mailing AddressPo Box 1077Fallbrook, CA 92088-1077
Phone(760) 331-7484
Sole ProprietorNo
Medical School CMSOtherGraduated 2023
Enumeration DateJune 24, 2026
Last NPPES UpdateJuly 6, 2026
NPPES CertifiedJuly 6, 2026
✔ NPI 1629994637 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in CA · 138626
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
194 SPANISH SPUR, Fallbrook, CA 92028
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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)

Mr. Derek Thomas Lcsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID6406313246
PECOS Enrollment IDI20260811004325
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 Derek Thomas reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Grow Healthcare Group PC
381 mi
Mental Health
99 S ALMADEN BLVD STE 600
San Jose, CA 95113
  • Reassigned Medicare billing, California enrollment
  • 3,139 clinicians in this Medicare group
NPI 1154994846 (408) 402-4385

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 92028 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
$0.00 typical visit price
range $62.10 – $184.71
Typical copayment $0.00 (range $15.52 – $46.17)
Most-billed visit code NA
Established Patient
$76.87 typical visit price
range $20.62 – $151.42
Typical copayment $19.21 (range $5.15 – $37.85)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Derek Thomas's NPI number?

The NPI number for Derek Thomas is 1629994637. It was assigned to this individual provider in the NPPES registry on June 24, 2026.

Where is Derek Thomas located?

Derek Thomas practices at 194 Spanish Spur, Fallbrook, CA 92028. The listed phone number is (760) 331-7484.

What is Derek Thomas's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Derek Thomas enrolled in Medicare?

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

Which organization bills Medicare for Derek Thomas's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Derek Thomas reassigns Medicare benefits to Grow Healthcare Group PC (San Jose, 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 Derek 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 Derek Thomas was last updated on July 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.