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MR. MARK LAWRENCE CALLAHAN SLP
NPI 1215194915
Speech-Language Pathologist in Pittsburgh, PA

Active since May 20, 2008
6000 BABCOCK BLVD, SUITE 1002, PITTSBURGH, PA 15237(412) 369-5150(412) 369-5163 Get Directions Write a Review

NPPES record last updated: May 20, 2008. Verified against the NPPES registry weekly; last sync: August 23, 2026.

About Mr. Mark Lawrence Callahan Slp NPPES

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

MR. MARK LAWRENCE CALLAHAN SLP (NPI 1215194915) is an individual speech-language pathologist provider in Pittsburgh, Pennsylvania, licensed in Pennsylvania (SL003238L) and active in the NPI registry since May 2008.

NPPES Registry Identity

NPI1215194915
Entity TypeIndividualMale
Primary Taxonomy235Z00000X
Provider Legal NameMR. MARK LAWRENCE CALLAHANCredential: SLP
Location Address6000 BABCOCK BLVD, SUITE 1002Pittsburgh, PA 15237-2564
Mailing Address6000 Babcock Blvd, Suite 1002Pittsburgh, PA 15237-2564 · (412) 369-5150 · Fax (412) 369-5163
Phone(412) 369-5150
Fax(412) 369-5163
Sole ProprietorYes
Enumeration DateMay 20, 2008
✔ NPI 1215194915 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 PA · SL003238L
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.
6000 BABCOCK BLVD, Pittsburgh, PA 15237
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Other Providers at the Same Location NPPES 11

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

MS. MICHELE SUSAN MAJCHER LCSW
Social Worker (Clinical)
6000 BABCOCK BLVD
PITTSBURGH, PA 15237
Allegheny County (412) 580-8970
MRS. ELIZABETH A. RYKACZEWSKI LCSW
Social Worker (Clinical)
6000 BABCOCK BLVD
PITTSBURGH, PA 15237
Allegheny County (412) 780-5256
MR. DAVID STANGEL
Technician/Technologist (Optician)
6000 BABCOCK BLVD
PITTSBURGH, PA 15237
Allegheny County (412) 366-2122
NANCY M KAMMERSELL MACCCSLP
Speech-Language Pathologist
6000 BABCOCK BLVD, SUITE 1002
PITTSBURGH, PA 15237
Allegheny County (412) 369-5160
MISS KRISTIN ANN MARTIN MS, CCC-SLP
Speech-Language Pathologist
6000 BABCOCK BLVD
PITTSBURGH, PA 15237
Allegheny County (412) 369-5150
DR. RICHARD L SCHNARRENBERGER DDS
Dentist (General Practice)
6000 BABCOCK BLVD
PITTSBURGH, PA 15237
Allegheny County (412) 364-4947
LINDA D MCHUGH
Occupational Therapist
6000 BABCOCK BLVD, SUITE1002
PITTSBURGH, PA 15237
Allegheny County (412) 369-5150
JENNIFER MARIE FLICKINGER OTR/L
Occupational Therapist
6000 BABCOCK BLVD, SUITE 1002
PITTSBURGH, PA 15237
Allegheny County (412) 369-5150

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 Mark Callahan's NPI number?

The NPI number for Mark Callahan is 1215194915. It was assigned to this individual provider in the NPPES registry on May 20, 2008.

Where is Mark Callahan located?

Mark Callahan practices at 6000 Babcock Blvd Suite 1002, Pittsburgh, PA 15237. The listed phone number is (412) 369-5150.

What is Mark Callahan'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 Mark Callahan was last updated on May 20, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.