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MARILYN THOMAS LCAC, MHS, MSED
NPI 1174029235
Counselor - Addiction (Substance Use Disorder) in Merrillville, IN

Active since April 05, 2018
5164 E 81ST AVE STE 380, MERRILLVILLE, IN 46410(219) 798-4106 Get Directions Write a Review

NPPES record last updated: January 22, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jan 22, 2026, Jan 6, 2026, Mar 4, 2025 and 1 more (4 updates tracked since 2021).

About Marilyn Thomas Lcac, Mhs, Msed NPPES

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

MARILYN THOMAS LCAC, MHS, MSED (NPI 1174029235) is an individual addiction (substance use disorder) provider in Merrillville, Indiana and active in the NPI registry since April 2018.

NPPES Registry Identity

NPI1174029235
Entity TypeIndividualFemale
Primary Taxonomy101YA0400X
Provider Legal NameMARILYN THOMASCredential: LCAC, MHS, MSED
Location Address5164 E 81ST AVE STE 380Merrillville, IN 46410-5852
Mailing Address5164 E 81st Ave Ste 380Merrillville, IN 46410-5852
Phone(219) 798-4106
Sole ProprietorNo
Enumeration DateApril 5, 2018
Last NPPES UpdateJanuary 22, 20264 updates tracked since enumeration
NPPES CertifiedJanuary 22, 2026
✔ NPI 1174029235 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Addiction (Substance Use Disorder)Behavioral Health & Social Service Providers
Taxonomy Code101YA0400X
5164 E 81ST AVE STE 380, Merrillville, IN 46410
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource, UnitedHealthcare.Insurance ›

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 1174029235. It was assigned to this individual provider in the NPPES registry on April 5, 2018.

Where is Marilyn Thomas located?

Marilyn Thomas practices at 5164 E 81st Ave Ste 380, Merrillville, IN 46410. The listed phone number is (219) 798-4106.

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.

What insurance does Marilyn Thomas accept?

Health plans from CareSource and UnitedHealthcare 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 January 22, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.