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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.

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

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: October 18, 2026.

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

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, billing reassignment, and ordering and referring status from CMS.

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

Medicare Billing Reassignment

Medicare enrollment records show Jill Williamson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Lexington Health Inc
Same address
Internal Medicine
120 E MEDICAL LN
West Columbia, SC 29169
  • Reassigned Medicare billing, South Carolina enrollment
  • 1,219 clinicians in this Medicare group
NPI 1558969667 (803) 936-7210

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 19

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

DR. WILLIAM ZACHARY SMITH DPT
Physical Therapist
123 E MEDICAL LN
WEST COLUMBIA, SC 29169
Lexington County (803) 791-2397
KAREN H DORR OTR/L
Occupational Therapist
123 E MEDICAL LN
WEST COLUMBIA, SC 29169
Lexington County (803) 791-2397
CALLIE MARIE HARLAN OTD
Occupational Therapist
123 E MEDICAL LN
WEST COLUMBIA, SC 29169
Lexington County (803) 791-2397
KAELA DIANAH HILL M.S., CCC-SLP
Speech-Language Pathologist
123 E MEDICAL LN
WEST COLUMBIA, SC 29169
Lexington County (803) 791-2397
LAUREN VINOSKI KENNEDY OTR/L
Occupational Therapist
123 E MEDICAL LN
WEST COLUMBIA, SC 29169
Lexington County (803) 791-2397
ALLYSON KINSMAN DPT
Physical Therapist
123 E MEDICAL LN
WEST COLUMBIA, SC 29169
Lexington County (803) 791-2397
DR. SAMUEL JON HACKETT DPT
Physical Therapist
123 E MEDICAL LN
WEST COLUMBIA, SC 29169
Lexington County (803) 791-2397
MRS. KATHRYN HOGAN COLE MSP,CCC-SLP
Speech-Language Pathologist
123 E MEDICAL LN
WEST COLUMBIA, SC 29169
Lexington County (803) 936-8184

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 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.

Where is Jill Williamson located?

Jill Williamson practices at 123 E Medical Ln, West Columbia, SC 29169. The listed phone number is (803) 791-2397.

What is Jill Williamson's specialty?

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

Is Jill Williamson enrolled in Medicare?

Yes. Jill Williamson is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Jill Williamson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jill Williamson reassigns Medicare benefits to Lexington Health Inc (West Columbia, SC). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Jill Williamson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

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 30 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.