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MARK A. UNDERWOOD MA, CCC-SLP
NPI 1639512247
Speech-Language Pathologist in Richland, WA

Active since April 12, 2013
615 SNOW AVE, RICHLAND, WA 99352(509) 967-6332 Get Directions Write a Review

NPPES record last updated: April 12, 2013. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Mark A. Underwood Ma, Ccc-slp NPPES

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

MARK A. UNDERWOOD MA, CCC-SLP (NPI 1639512247) is an individual speech-language pathologist provider in Richland, Washington, licensed in Washington (LL60314859) and active in the NPI registry since April 2013.

NPPES Registry Identity

NPI1639512247
Entity TypeIndividualMale
Primary Taxonomy235Z00000X
Provider Legal NameMARK A. UNDERWOODCredential: MA, CCC-SLP
Location Address615 SNOW AVERichland, WA 99352-3851
Mailing Address615 Snow AveRichland, WA 99352-3851 · (509) 967-6332
Phone(509) 967-6332
Sole ProprietorYes
Enumeration DateApril 12, 2013
✔ NPI 1639512247 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 WA · LL60314859
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.
615 SNOW AVE, Richland, WA 99352
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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.

DARA NADINE DEJONG BSN, RN
Registered Nurse (School)
615 SNOW AVE
RICHLAND, WA 99352
Benton County (509) 942-4232
MRS. BRENDA SUSANNE ATENCIO RN
Registered Nurse (School)
615 SNOW AVE
RICHLAND, WA 99352
Benton County (509) 967-6000
KELLY MACKEY
Registered Nurse (School)
615 SNOW AVE
RICHLAND, WA 99352
Benton County (509) 578-9510
RICHLAND SCHOOL DISTRICT
Local Education Agency (LEA)
615 SNOW AVE
RICHLAND, WA 99352
Benton County (509) 967-6055
STEPHANIE HAWLEY
Speech-Language Pathologist
615 SNOW AVE
RICHLAND, WA 99352
Benton County (509) 378-1699
MRS. POLLY SHUPE MS,CCC-SLP
Speech-Language Pathologist
615 SNOW AVE
RICHLAND, WA 99352
Benton County (509) 967-6060
BRITTANY WOEHLE MS, CCC-SLP
Speech-Language Pathologist
615 SNOW AVE
RICHLAND, WA 99352
Benton County (509) 967-6000
BRENDA HOLLINGSWORTH MUNLEY M.S.
Speech-Language Pathologist
615 SNOW AVE
RICHLAND, WA 99352
Benton County (509) 967-6000

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 Underwood's NPI number?

The NPI number for Mark Underwood is 1639512247. It was assigned to this individual provider in the NPPES registry on April 12, 2013.

Where is Mark Underwood located?

Mark Underwood practices at 615 Snow Ave, Richland, WA 99352. The listed phone number is (509) 967-6332.

What is Mark Underwood'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 Underwood was last updated on April 12, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.