Katelin Jean Williamson, D.O.
Psychiatry Physician · Columbia, SC
Katelin Jean Williamson, D.O. is a psychiatry physician with a practice address in Columbia, South Carolina, and NPI 1477967859, issued on Jun 13, 2014. Check the license (South Carolina 36709, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Katelin Jean Williamson
- Credential
- D.O.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 36709 SC
Self-reported in NPPES; status is on the state search - Practice location
- 720 Gracern RD Ste 120, Columbia, SC 29210
- Phone
- (803) 296-2585
- Enumerated
- Jun 13, 2014
- Record last updated
- Apr 23, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (803) 551-2585
- Medicaid ID
- 367098 SC
- Medicare enrollment
- Enrolled (PECOS I20190802000287); accepts Medicare assignment
- Medical or professional school
- Lake Erie College Of Osteopathic Medicine, Erie, 2014
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 891 in South Carolina → Look up another NPI →
Also registered at 720 Gracern RD Ste 120
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amber Nickerson, LISW-CP, LCSWClinical Social Worker1447776679
- Brittany Peters, MDChild & Adolescent Psychiatry Physician1841463163
- Margaret Rukstalis, MDPsychiatry Physician1649629619
- Jaclyn Sligar, MDPsychiatry Physician1942613278
Verify Katelin Jean Williamson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 36709Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average psychiatry physician in 2024
394 Medicare Part D claims for 11 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Clonidine Hcl69 claims
- Aripiprazole56 claims
- Clozapine39 claims
- Guanfacine Hcl Er25 claims
- Hydroxyzine Hcl24 claims
- Clonazepam23 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- South Carolina Dept OF Mental Health Accounting OfficeColumbia, SC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katelin Jean Williamson among 891 psychiatry physician records in South Carolina
Katelin Jean Williamson, D.O. is one of 891 psychiatry physician records with a practice address in South Carolina. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 60% of them.
- NPI issued2014 · 60% of these records are older, 38% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 41% of these records are
- Graduated2014 · median 2007 among the 365 with a school on file
- Record last updated2021 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
171 psychiatry physician records list a practice address in Columbia
They are 171 of the 11,200 NPPES records with a practice address in Columbia, and 891 psychiatry physician records in South Carolina.
All 891 in South Carolina → Every provider in Columbia → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Anil Juneja, M.D.Columbia, SC 292101851463566
- Rachel Metcalfe, MDColumbia, SC 292101104322429
- Subba Rao, MDColumbia, SC 292101518053909
- Margaret Rukstalis, MDColumbia, SC 292101649629619
- Jaclyn Sligar, MDColumbia, SC 292101942613278
- Mohan Sridaran, DOColumbia, SC 292101861654667
- Beverly Wood, MDColumbia, SC 292101063621100
- Barbara Crockett, M.D.Columbia, SC 292091811915192
Common questions
What is Katelin Jean Williamson, D.O.'s NPI number?
Katelin Jean Williamson, D.O.'s National Provider Identifier (NPI) is 1477967859, issued on Jun 13, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Katelin Jean Williamson, D.O. located?
The NPPES record lists a practice address at 720 Gracern RD Ste 120, Columbia, SC, 29210. Phone: (803) 296-2585. Providers update this record themselves, so call before visiting.
How can I verify Katelin Jean Williamson, D.O.'s license?
NPPES lists South Carolina license number 36709, as entered by the provider. Search the South Carolina Board of Medical Examiners at https://verify.llronline.com/LicLookup/Med/Med.aspx?div=22. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Katelin Jean Williamson, D.O. prescribe under Medicare Part D?
In 2024, Katelin Jean Williamson, D.O. had 394 Medicare Part D claims for 11 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.