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

MRS. JILL C WILLIAMSON MA, CCC-SLP
NPI 1114185469
Speech-Language Pathologist in West Columbia, SC

Q: What is Jill Williamson's NPI number?

The NPI number for Jill Williamson is 1114185469. It was assigned to this individual provider in the NPPES registry on May 22, 2008.

Q: What is Jill Williamson's specialty?

The primary specialty registered for this NPI is Speech-Language Pathologist with taxonomy code 235Z00000X.

Q: When was this NPI record last updated?

The NPPES record for Jill Williamson was last updated on September 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.

Active since May 22, 2008

123 E MEDICAL LN, WEST COLUMBIA, SC 29169(803) 791-2397(803) 936-8184 Get Directions Write a Review

NPPES record last updated: September 22, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

Record update history: Sep 22, 2026, Jul 20, 2026 (2 updates tracked since 2026).

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About Mrs. Jill C Williamson Ma, Ccc-slp NPPES

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

MRS. JILL C WILLIAMSON MA, CCC-SLP (NPI 1114185469) is an individual speech-language pathologist provider in West Columbia, South Carolina, licensed in South Carolina (3431) and active in the NPI registry since May 2008. She maintains a secondary practice location in Gilbert and is a graduate of Other (2018).

NPPES Registry Identity

NPI1114185469

Entity TypeIndividualFemale

Primary Taxonomy235Z00000X

Provider Legal NameMRS. JILL C WILLIAMSONCredential: MA, CCC-SLP

Location Address123 E MEDICAL LNWest Columbia, SC 29169-4813

Mailing Address216 Jeter RdGilbert, SC 29054-9592 · (803) 808-3395

Phone(803) 791-2397

Fax(803) 936-8184

Sole ProprietorYes

Medical School CMSOtherGraduated 2018

Enumeration DateMay 22, 2008

Last NPPES UpdateSeptember 22, 20262 updates tracked since enumeration

NPPES CertifiedSeptember 22, 2026

✔ NPI 1114185469 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 SC · 3431

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.

123 E MEDICAL LN, West Columbia, SC 29169

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Secondary Practice Location 1

Location 1216 Jeter RdGilbert, SC 29054-9592 · Phone (803) 808-3395

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mrs. Jill C Williamson Ma, Ccc-slp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7911463559

PECOS Enrollment IDI20260803003340

Other Providers at the Same Location NPPES 18

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

DR. WILLIAM ZACHARY SMITH DPT

Physical Therapist