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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

MARY O'BRIEN SPEECH THERAPY PLLC
NPI 1104731181
Speech-Language Pathologist in Chicago, IL

Active since August 15, 2026
2834 W HENDERSON ST, CHICAGO, IL 60618(773) 497-0115 Get Directions Write a Review

NPPES record added: August 15, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Mary O'brien Speech Therapy Pllc NPPES

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

MARY O'BRIEN SPEECH THERAPY PLLC (NPI 1104731181) is a healthcare organization registered as a speech-language pathologist in Chicago, Illinois and active in the NPI registry since August 2026. The organization lists Mary O'brien, Speech Language Pathologist, as its authorized official.

NPPES Registry Identity

NPI1104731181
Entity TypeOrganization
Primary Taxonomy235Z00000X
Legal Business NameMARY O'BRIEN SPEECH THERAPY PLLC
Location Address2834 W HENDERSON STChicago, IL 60618-5815
Mailing Address2834 W Henderson StChicago, IL 60618-5815 · (773) 497-0115
Phone(773) 497-0115
Organization SubpartNo
Authorized OfficialMary O'brienSpeech Language Pathologist · (773) 497-0115
Enumeration DateAugust 15, 2026
NPPES CertifiedAugust 15, 2026
✔ NPI 1104731181 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
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.
2834 W HENDERSON ST, Chicago, IL 60618
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

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.

MARY C OBRIEN SLP
Speech-Language Pathologist
2834 W HENDERSON ST
CHICAGO, IL 60618
Cook County (773) 497-0115
MARY O'BRIEN SPEECH THERAPY
Speech-Language Pathologist
2834 W HENDERSON ST
CHICAGO, IL 60618
Cook County (773) 497-0115

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 O'brien Speech Therapy PLLC's NPI number?

The NPI number for Mary O'brien Speech Therapy PLLC is 1104731181. It was assigned to this organization in the NPPES registry on August 15, 2026.

Where is Mary O'brien Speech Therapy PLLC located?

Mary O'brien Speech Therapy PLLC is located at 2834 W Henderson St, Chicago, IL 60618. The listed phone number is (773) 497-0115.

What is Mary O'brien Speech Therapy PLLC'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 O'brien Speech Therapy PLLC was last updated on August 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 days 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.