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MRS. MARY K LIETHEN M.S., CCC-SLP/L
NPI 1609381672
Speech-Language Pathologist in Crystal Lake, IL

Active since December 12, 2017
3223 IL ROUTE 176, CRYSTAL LAKE, IL 60014(815) 459-3023(815) 356-0519 Get Directions Write a Review

NPPES record last updated: July 21, 2022. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 21, 2022, Dec 12, 2017 (2 updates tracked since 2017).

About Mrs. Mary K Liethen M.s., Ccc-slp/l NPPES

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

MRS. MARY K LIETHEN M.S., CCC-SLP/L (NPI 1609381672) is an individual speech-language pathologist provider in Crystal Lake, Illinois, licensed in Illinois (12027407) and active in the NPI registry since December 2017.

NPPES Registry Identity

NPI1609381672
Entity TypeIndividualFemale
Primary Taxonomy235Z00000X
Provider Legal NameMRS. MARY K LIETHENCredential: M.S., CCC-SLP/L
Location Address3223 IL ROUTE 176Crystal Lake, IL 60014-2145
Mailing Address901 Pin Oak CirCary, IL 60013-1672 · (815) 459-3023 · Fax (815) 356-0519
Phone(815) 459-3023
Fax(815) 356-0519
Sole ProprietorNo
Enumeration DateDecember 12, 2017
Last NPPES UpdateJuly 21, 20222 updates tracked since enumeration
✔ NPI 1609381672 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpeech-Language PathologistSpeech, Language and Hearing Service Providers
Taxonomy Code235Z00000X
License✔ Licensed in IL · 12027407
Definition
The speech-language pathologist is the professional who engages in clinical services, prevention, advocacy, education, administration, and research in the areas of communication and swallowing across the life span from infancy through geriatrics. Speech-language pathologists address typical and atypical impairments and disorders related to communication and swallowing in the areas of speech sound production, resonance, voice, fluency, language (comprehension and expression), cognition, and feeding and swallowing.
3223 IL ROUTE 176, Crystal Lake, IL 60014
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Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

TRACY ANN EGGE OTR/L
Occupational Therapist
3223 IL ROUTE 176
CRYSTAL LAKE, IL 60014
McHenry County (815) 459-3023
MRS. KRISTIN CLINE M.A. CCC-SLP
Speech-Language Pathologist
3223 IL ROUTE 176
CRYSTAL LAKE, IL 60014
McHenry County (815) 459-3023

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 Mary Liethen's NPI number?

The NPI number for Mary Liethen is 1609381672. It was assigned to this individual provider in the NPPES registry on December 12, 2017.

Where is Mary Liethen located?

Mary Liethen practices at 3223 Il Route 176, Crystal Lake, IL 60014. The listed phone number is (815) 459-3023.

What is Mary Liethen's specialty?

The primary specialty registered for this NPI is Speech-Language Pathologist with taxonomy code 235Z00000X.

When was this NPI record last updated?

The NPPES record for Mary Liethen was last updated on July 21, 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.