Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Steven Ashley Thellmann, MS, CCC-SLP

Individual provider Speech-Language Pathologist · NPI 1639956311

Steven Ashley Thellmann, MS, CCC-SLP is a Speech-Language Pathologist in Westlake, Ohio. Licensed in Ohio. Registered with an NPI since 2023.

Licensed in
OH
In the registry since
2023
What do these letters mean?
MS — Master of Science
A graduate science degree.
CCC-SLP — Certificate of Clinical Competence in Speech-Language Pathology
A speech-language pathologist certified by ASHA.

See every abbreviation used in this directory →

Practice location Address checks out

23550 Center Ridge Rd Ste 105
Westlake, OH 44145-3655
Phone: (440) 895-9970
Fax: (440) 895-9961
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Speech-Language Pathologist (primary) Taxonomy 235Z00000X · Licence SP.15425 (OH)

Record details

NPI number1639956311
Entity typeIndividual (Type 1)
GenderMale
Credentials MS , CCC-SLP
Sole proprietorNo
NPI enumeratedSeptember 14, 2023
Last updated in NPPESSeptember 14, 2023
Certification dateSeptember 14, 2023

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