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OAK LEYDEN DEVELOPMENTAL SERVICES
NPI 1033254347
Speech-Language Pathologist in Oak Park, IL

Active since February 21, 2007CLIA 14D2204320 · Waiver
411 CHICAGO AVE, OAK PARK, IL 60302(708) 524-1050(708) 524-2469 Get Directions Write a Review

NPPES record last updated: January 27, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Oak Leyden Developmental Services NPPES

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

OAK LEYDEN DEVELOPMENTAL SERVICES (NPI 1033254347) is a healthcare organization registered as a speech-language pathologist in Oak Park, Illinois and active in the NPI registry since February 2007. The organization holds a CLIA Waiver certificate valid through December 7, 2026 and lists Melissa Ehmann, Director Of Children Services, as its authorized official.

NPPES Registry Identity

NPI1033254347
Entity TypeOrganization
Primary Taxonomy235Z00000X
Legal Business NameOAK LEYDEN DEVELOPMENTAL SERVICES
Location Address411 CHICAGO AVEOak Park, IL 60302-2233
Mailing Address411 Chicago AveOak Park, IL 60302-2233 · (708) 524-1050 · Fax (708) 524-2469
Phone(708) 524-1050
Fax(708) 524-2469
Organization SubpartNo
Authorized OfficialMelissa EhmannDirector Of Children Services · (708) 524-1050
Enumeration DateFebruary 21, 2007
Last NPPES UpdateJanuary 27, 2025
NPPES CertifiedJanuary 27, 2025
✔ NPI 1033254347 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 5

★ Primary SpecialtySpeech-Language PathologistSpeech, Language and Hearing Service Providers
Taxonomy Code235Z00000X
Licenses✔ Licensed in IL · 146003481✔ Licensed in IL · 146005747✔ Licensed in IL · 146008122✔ Licensed in IL · 146008222✔ Licensed in IL · 146008395
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.
Also ListedSocial Worker · ClinicalTaxonomy 1041C0700X
Also ListedDevelopmental TherapistTaxonomy 222Q00000X
Also ListedPhysical TherapistTaxonomy 225100000X · License 070002012 (IL), 070004000 (IL), 070011242 (IL), 070008117 (IL)
Also ListedOccupational TherapistTaxonomy 225X00000X · License 056003098 (IL), 056001573 (IL)
411 CHICAGO AVE, Oak Park, IL 60302
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CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 14D2204320

Oak-Leyden Developmental Services · Oak Park, IL
Active · expires Dec 7, 2026
CLIA Number14D2204320
Laboratory TypeNonprofit Res Services
Certificate Effective DateDecember 8, 2024
Certificate Expiration DateDecember 7, 2026
Laboratory DirectorMaria J. Martinez
Laboratory Phone(708) 524-1050
Laboratory LocationOak-Leyden Developmental Services411 Chicago Ave, Oak Park, IL 60302
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES 20

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

MONIKA ATKINSON
Developmental Therapist
411 CHICAGO AVE
OAK PARK, IL 60302
Cook County (708) 524-1050
MS. JULIE CAMERON SLP
Speech-Language Pathologist
411 CHICAGO AVE
OAK PARK, IL 60302
Cook County (708) 524-1050
MS. SUSAN JILL KUPPERMAN
Speech-Language Pathologist
411 CHICAGO AVE
OAK PARK, IL 60302
Cook County (708) 524-1050
CORA JANE THAXTON
Speech-Language Pathologist
411 CHICAGO AVE
OAK PARK, IL 60302
Cook County (708) 524-1050
VANESSA PEIXOTO HONORATO OTR/L
Occupational Therapist
411 CHICAGO AVE
OAK PARK, IL 60302
Cook County (708) 524-1050
MEGAN SHISHMAN CF-SLP
Speech-Language Pathologist
411 CHICAGO AVE
OAK PARK, IL 60302
Cook County (708) 524-1050
MRS. EMILY ANN SLIWA LCPC
Counselor (Professional)
411 CHICAGO AVE
OAK PARK, IL 60302
Cook County (708) 524-6704
MRS. KATHERINE ANN CREHAN M.S. CCC-SLP
Speech-Language Pathologist
411 CHICAGO AVE
OAK PARK, IL 60302
Cook County (708) 524-1050

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 Oak Leyden Developmental Services's NPI number?

The NPI number for Oak Leyden Developmental Services is 1033254347. It was assigned to this organization in the NPPES registry on February 21, 2007.

Where is Oak Leyden Developmental Services located?

Oak Leyden Developmental Services is located at 411 Chicago Ave, Oak Park, IL 60302. The listed phone number is (708) 524-1050.

What is Oak Leyden Developmental Services's specialty?

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

Does Oak Leyden Developmental Services hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 14D2204320) is associated with this NPI, valid through December 7, 2026. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Oak Leyden Developmental Services was last updated on January 27, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.