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

MACKENZIE WASSER MS, CCC-SLP
NPI 1972439263
Speech-Language Pathologist in Saint Louis, MO

Active since June 23, 2026
12110 CLAYTON RD, SAINT LOUIS, MO 63131(314) 989-8100 Get Directions Write a Review

NPPES record added: June 23, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Mackenzie Wasser Ms, Ccc-slp NPPES

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

MACKENZIE WASSER MS, CCC-SLP (NPI 1972439263) is an individual speech-language pathologist provider in Saint Louis, Missouri, licensed in Missouri (2022030326) and active in the NPI registry since June 2026.

NPPES Registry Identity

NPI1972439263
Entity TypeIndividualFemale
Primary Taxonomy235Z00000X
Provider Legal NameMACKENZIE WASSERCredential: MS, CCC-SLP
Location Address12110 CLAYTON RDSaint Louis, MO 63131-2599
Mailing Address1002 Dorchester AveKirkwood, MO 63122-2433
Phone(314) 989-8100
Sole ProprietorNo
Enumeration DateJune 23, 2026
NPPES CertifiedJune 23, 2026
✔ NPI 1972439263 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 MO · 2022030326
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.
12110 CLAYTON RD, Saint Louis, MO 63131
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Other Names 1

Former Name (1)Mackenzie James Ms, Ccc-slp

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.

MAUREEN MERSMAN
Speech-Language Pathologist
12110 CLAYTON RD
SAINT LOUIS, MO 63131
St. Louis County (314) 989-8150
MARGARET WALKENHORST
Speech-Language Pathologist
12110 CLAYTON RD
SAINT LOUIS, MO 63131
St. Louis County (314) 989-8150
KRISTEN ANNE OTTENLIPS MA CF-SLP
Speech-Language Pathologist
12110 CLAYTON RD
SAINT LOUIS, MO 63131
St. Louis County (314) 989-8100
MARIGLENN GOLDEN BOGGS
Speech-Language Pathologist
12110 CLAYTON RD
SAINT LOUIS, MO 63131
St. Louis County (314) 989-8100
AMELIA MARTIN
Speech-Language Pathologist
12110 CLAYTON RD
SAINT LOUIS, MO 63131
St. Louis County (314) 989-8100
LORI BETH GLASSMAN
Speech-Language Pathologist
12110 CLAYTON RD
SAINT LOUIS, MO 63131
St. Louis County (314) 989-8100
LEAH MOEHLENBROCK
Speech-Language Pathologist
12110 CLAYTON RD
SAINT LOUIS, MO 63131
St. Louis County (314) 989-8150
EMILY WILTSCH
Behavior Analyst
12110 CLAYTON RD
SAINT LOUIS, MO 63131
St. Louis County (314) 989-8150

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 Mackenzie Wasser's NPI number?

The NPI number for Mackenzie Wasser is 1972439263. It was assigned to this individual provider in the NPPES registry on June 23, 2026. The provider is also known as Mackenzie James Ms, Ccc-Slp.

Where is Mackenzie Wasser located?

Mackenzie Wasser practices at 12110 Clayton Rd, Saint Louis, MO 63131. The listed phone number is (314) 989-8100.

What is Mackenzie Wasser'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 Mackenzie Wasser was last updated on June 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 52 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.