MS. MARILYN B OMAHEN L.C.S.W., R.D.D.P.
NPI 1114090040
Counselor - Addiction (Substance Use Disorder) in Northfield, IL

Q: What is Marilyn Omahen's NPI number?

The NPI number for Marilyn Omahen is 1114090040. It was assigned to this individual provider in the NPPES registry on November 16, 2006.

Q: What is Marilyn Omahen'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 Omahen was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.

Active since November 16, 2006

456 W FRONTAGE RD STE 2, NORTHFIELD, IL 60093(847) 446-0448 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Ms. Marilyn B Omahen L.c.s.w., R.d.d.p. NPPES

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

MS. MARILYN B OMAHEN L.C.S.W., R.D.D.P. (NPI 1114090040) is an individual addiction (substance use disorder) provider in Northfield, Illinois, licensed in Illinois (25616) and active in the NPI registry since November 2006.

NPPES Registry Identity

NPI1114090040

Entity TypeIndividualFemale

Primary Taxonomy101YA0400X

Provider Legal NameMS. MARILYN B OMAHENCredential: L.C.S.W., R.D.D.P.

Location Address456 W FRONTAGE RD STE 2Northfield, IL 60093-3038

Mailing Address1923 New Willow Rd Apt 6Northfield, IL 60093-2944 · (847) 446-0448

Phone(847) 446-0448

Sole ProprietorYes

Enumeration DateNovember 16, 2006

Last NPPES UpdateSeptember 11, 2025

✔ NPI 1114090040 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

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

Taxonomy Code101YA0400X

License✔ Licensed in IL · 25616

Also ListedSocial Worker · ClinicalTaxonomy 1041C0700X

456 W FRONTAGE RD STE 2, Northfield, IL 60093

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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 Omahen's NPI number?

The NPI number for Marilyn Omahen is 1114090040. It was assigned to this individual provider in the NPPES registry on November 16, 2006.

Where is Marilyn Omahen located?

Marilyn Omahen practices at 456 W Frontage Rd Ste 2, Northfield, IL 60093. The listed phone number is (847) 446-0448.

What is Marilyn Omahen's specialty?

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

When was this NPI record last updated?

The NPPES record for Marilyn Omahen was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.