KATELIN JEAN WILLIAMSON D.O.
NPI 1477967859
Psychiatry & Neurology - Psychiatry in Columbia, SC

Q: What is Katelin Williamson's NPI number?

The NPI number for Katelin Williamson is 1477967859. It was assigned to this individual provider in the NPPES registry on June 13, 2014.

Q: What is Katelin Williamson's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Active since June 13, 2014PECOS EnrolledAccepts Medicare Assignment

720 GRACERN RD STE 120, COLUMBIA, SC 29210(803) 296-2585(803) 551-2585 Get Directions Write a Review

NPPES record last updated: April 23, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 23, 2021, Jul 29, 2020 (2 updates tracked since 2020).

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About Katelin Jean Williamson D.o. NPPES

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

KATELIN JEAN WILLIAMSON D.O. (NPI 1477967859) is an individual psychiatry provider in Columbia, South Carolina, licensed in South Carolina (36709) and active in the NPI registry since June 2014. She is enrolled in Medicare PECOS, maintains a secondary practice location in Columbia, and is a graduate of Lake Erie College Of Osteopathic Medicine, Erie (2014).

NPPES Registry Identity

NPI1477967859

Entity TypeIndividualFemale

Primary Taxonomy2084P0800X

Provider Legal NameKATELIN JEAN WILLIAMSONCredential: D.O.

Location Address720 GRACERN RD STE 120Columbia, SC 29210-7657

Mailing AddressPo Box 743904Atlanta, GA 30374-3904 · (803) 296-7330

Phone(803) 296-2585

Fax(803) 551-2585

Sole ProprietorNo

Medical School CMSLake Erie College Of Osteopathic Medicine, ErieGraduated 2014

Enumeration DateJune 13, 2014

Last NPPES UpdateApril 23, 20212 updates tracked since enumeration

NPPES CertifiedApril 23, 2021

✔ NPI 1477967859 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians

Taxonomy Code2084P0800X

License✔ Licensed in SC · 36709

Definition

A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

720 GRACERN RD STE 120, Columbia, SC 29210

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Secondary Practice Location 1

Location 13555 Harden Street Ext Ste 141Columbia, SC 29203-6894 · Phone (803) 434-4300 · Fax (803) 434-8326

Other Identifiers 1

Medicaid367098SC

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Katelin Jean Williamson D.o. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1850627530

PECOS Enrollment IDI20190802000287

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Katelin Williamson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

South Carolina Dept Of Mental Health Accounting Office

2.8 mi

Community/Behavioral Health

2414 BULL ST, ATTN: TDE GRANT OF TELEPSYCHIATRY
Columbia, SC 29201

Reassigned Medicare billing, South Carolina enrollment
Also billed through NPI 1861066854 (South Carolina)
133 clinicians in this Medicare group

NPI 1831338961 (803) 898-7183

Stationmd Professional Corporation

596 mi

Emergency Medicine

515 VALLEY ST STE 203
Maplewood, NJ 07040

Reassigned Medicare billing, New Jersey enrollment
38 clinicians in this Medicare group

NPI 1285015347 (908) 663-2929

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 29210 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$163.84 typical visit price

range $53.57 – $163.84

Typical copayment $40.96 (range $13.39 – $40.96)

Most-billed visit code 99205

Established Patient

$67.12 typical visit price

range $16.96 – $133.52

Typical copayment $16.78 (range $4.24 – $33.38)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 4

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

AMBER NICKERSON LISW-CP, LCSW

Social Worker (Clinical)

720 GRACERN RD STE 120
COLUMBIA, SC 29210

Richland County (803) 296-2191

DR. MARGARET RUYLE RUKSTALIS MD

Psychiatry & Neurology (Psychiatry)

720 GRACERN RD STE 120
COLUMBIA, SC 29210

Richland County (803) 296-8765

BRITTANY RAY PETERS MD

Psychiatry & Neurology (Child & Adolescent Psychiatry)

720 GRACERN RD STE 120
COLUMBIA, SC 29210

Richland County (803) 296-2585

JACLYN SLIGAR MD

Psychiatry & Neurology (Psychiatry)

720 GRACERN RD STE 120
COLUMBIA, SC 29210

Richland County (803) 296-8765

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 Katelin Williamson's NPI number?

The NPI number for Katelin Williamson is 1477967859. It was assigned to this individual provider in the NPPES registry on June 13, 2014.

Where is Katelin Williamson located?

Katelin Williamson practices at 720 Gracern Rd Ste 120, Columbia, SC 29210. The listed phone number is (803) 296-2585.

What is Katelin Williamson's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Katelin Williamson enrolled in Medicare?

Yes. Katelin Williamson is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Katelin Williamson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Katelin Williamson reassigns Medicare benefits to 2 organizations: South Carolina Dept Of Mental Health Accounting Office (Columbia, SC) and Stationmd Professional Corporation (Maplewood, NJ). Each 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 Katelin 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 Katelin Williamson was last updated on April 23, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.