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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DIANE OLSZEWSKI M.S., CCC-SLP
NPI 1437476850
Speech-Language Pathologist in Baltimore, MD

Active since April 25, 2010
2200 KERNAN DR, BALTIMORE, MD 21207(410) 448-6323 Get Directions Write a Review

NPPES record last updated: September 29, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Diane Olszewski M.s., Ccc-slp NPPES

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

DIANE OLSZEWSKI M.S., CCC-SLP (NPI 1437476850) is an individual speech-language pathologist provider in Baltimore, Maryland, licensed in Maryland (05723) and active in the NPI registry since April 2010.

NPPES Registry Identity

NPI1437476850
Entity TypeIndividualFemale
Primary Taxonomy235Z00000X
Provider Legal NameDIANE OLSZEWSKICredential: M.S., CCC-SLP
Location Address2200 KERNAN DRBaltimore, MD 21207-6665
Mailing Address11089 Hidden Trail DrOwings Mills, MD 21117-2357 · (410) 303-7663
Phone(410) 448-6323
Sole ProprietorNo
Enumeration DateApril 25, 2010
Last NPPES UpdateSeptember 29, 2026
NPPES CertifiedSeptember 29, 2026
✔ NPI 1437476850 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 MD · 05723
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.
2200 KERNAN DR, Baltimore, MD 21207
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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.

KIMBERLY ANN CARDOSA
Physical Therapist
2200 KERNAN DR
BALTIMORE, MD 21207
Baltimore City (410) 448-6323
MRS. CECILIA MAHLE MS, OTR/L CBIS
Occupational Therapist
2200 KERNAN DR
GWYNN OAK, MD 21207
Baltimore City (410) 448-6302
UNIVERSITY OF MARYLAND ORTHOPAEDIC TRAUMA ASSOCIATES, PA
Orthopaedic Surgery
2200 KERNAN DR
BALTIMORE, MD 21207
Baltimore City (410) 448-6400
EARLE MILTON SCHULZ D.D.S.
Dentist (Pediatric Dentistry)
2200 KERNAN DR
BALTIMORE, MD 21207
Baltimore City (410) 448-6290
MS. BARBARA B BRUNK PA-C
Physician Assistant (Surgical)
2200 KERNAN DR
BALTIMORE, MD 21207
Baltimore City (410) 448-6719
MS. AMBER MICHELLE WEATHERS MS, OTR/L
Occupational Therapist
2200 KERNAN DR
BALTIMORE, MD 21207
Baltimore City (410) 448-2500
KATHLEEN LORETTA EGLSEDER
Occupational Therapist
2200 KERNAN DR
BALTIMORE, MD 21207
Baltimore City (410) 448-6323
UNIV OF MARYLAND OTORHINOLARYNGOLOGY HEAD & NECK SURGERY PA
Specialist
2200 KERNAN DR
BALTIMORE, MD 21207
Baltimore City (410) 328-6897

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 Diane Olszewski's NPI number?

The NPI number for Diane Olszewski is 1437476850. It was assigned to this individual provider in the NPPES registry on April 25, 2010.

Where is Diane Olszewski located?

Diane Olszewski practices at 2200 Kernan Dr, Baltimore, MD 21207. The listed phone number is (410) 448-6323.

What is Diane Olszewski'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 Diane Olszewski was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 28 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.