DR. MARILYN KAY THOMAS PHD
NPI 1508418336
Counselor - Addiction (Substance Use Disorder) in Lancaster, TX

Q: What is Marilyn Thomas's NPI number?

The NPI number for Marilyn Thomas is 1508418336. It was assigned to this individual provider in the NPPES registry on July 11, 2019.

Q: What is Marilyn Thomas's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Addiction (Substance Use Disorder), with taxonomy code 101YA0400X.

Q: When was this NPI record last updated?

The NPPES record for Marilyn Thomas was last updated on July 11, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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 July 11, 2019PECOS Enrolled

1812 PIONEER WAY, LANCASTER, TX 75146(214) 995-9364 Get Directions Write a Review

NPPES record last updated: July 11, 2019. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Dr. Marilyn Kay Thomas Phd NPPES

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

DR. MARILYN KAY THOMAS PHD (NPI 1508418336) is an individual addiction (substance use disorder) provider in Lancaster, Texas and active in the NPI registry since July 2019. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1508418336

Entity TypeIndividualFemale

Primary Taxonomy101YA0400X

Provider Legal NameDR. MARILYN KAY THOMASCredential: PHD

Location Address1812 PIONEER WAYLancaster, TX 75146-1902

Mailing Address1812 Pioneer WayLancaster, TX 75146-1902 · (214) 995-9364

Phone(214) 995-9364

Sole ProprietorYes

Enumeration DateJuly 11, 2019

✔ NPI 1508418336 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyCounselor · Addiction (Substance Use Disorder)Behavioral Health & Social Service Providers

Taxonomy Code101YA0400X

Also ListedCounselor · ProfessionalTaxonomy 101YP2500X

Also ListedCounselor · SchoolTaxonomy 101YS0200X · License 1443726 (TX)

1812 PIONEER WAY, Lancaster, TX 75146

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Marilyn Kay Thomas Phd 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 Marilyn Thomas reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Hamilton Counseling And Consulting, PLLC

9.7 mi

Professional

777 E WHEATLAND RD STE 101
Duncanville, TX 75116

Reassigned Medicare billing, Texas enrollment
14 clinicians in this Medicare group

NPI 1497386502 (972) 283-6799

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

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 Marilyn Thomas's NPI number?

The NPI number for Marilyn Thomas is 1508418336. It was assigned to this individual provider in the NPPES registry on July 11, 2019.

Where is Marilyn Thomas located?

Marilyn Thomas practices at 1812 Pioneer Way, Lancaster, TX 75146. The listed phone number is (214) 995-9364.

What is Marilyn Thomas's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Addiction (Substance Use Disorder), with taxonomy code 101YA0400X.

Is Marilyn Thomas enrolled in Medicare?

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

Which organization bills Medicare for Marilyn Thomas's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marilyn Thomas reassigns Medicare benefits to Hamilton Counseling And Consulting, PLLC (Duncanville, TX). 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 Marilyn Thomas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Marilyn Thomas accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and Ambetter from Superior HealthPlan and 8 other insurers list Marilyn Thomas as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Marilyn Thomas was last updated on July 11, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.