Doctor profile · Federal record
Dr. Katelin Williamson, D.O.
Psychiatry Physician (CMS: Psychiatry) · Columbia, SC
- NPI 1477967859
- Accepts Medicare
- 12 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
720 Gracern RD Ste 120
Columbia, SC 292107657
(803) 296-2585
fax (803) 551-2585 - Additional location
-
3555 Harden Street Ext Ste 141
Columbia, SC 292036894
(803) 434-4300
fax (803) 434-8326 - Mailing address
-
Po Box 743904
Atlanta, GA 303743904
Credentials & registration
- NPI registered
- June 2014 — 12 yrs on file
- Profile last updated
- April 23, 2021
- Year of graduation
- 2014 — 12 yrs since
- Specialty taxonomy
- 2084P0800X — NUCC code
- State license (1)
- South Carolina #36709
- Medicaid
- SC #367098
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1477967859. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
18
Distinct HCPCS
1
Medicare allowed
$2,985
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
90792 |
Psychiatric diagnostic evaluation with medical services | 18 | 18 | $166 |
In context: peer comparison
Among 22 peers in this city , average services per provider: 105. This provider delivers 0.2× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
236
Patients
0
Total drug cost
$21,584
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Clonidine Hcl | Generic | 49 | 0 | $494 |
| Clozapine | Generic | 43 | 0 | $4,320 |
| Aripiprazole | Generic | 24 | 0 | $514 |
| Guanfacine Hcl Er (Guanfacine Hcl) | Brand | 24 | 0 | $390 |
| Clonazepam | Generic | 22 | 0 | $113 |
| Hydroxyzine Hcl | Generic | 14 | 0 | $175 |
| Abilify (Aripiprazole) | Brand | 12 | 0 | $10,553 |
| Diazepam | Generic | 12 | 0 | $74 |
| Fluoxetine Hcl | Generic | 12 | 0 | $104 |
| Quillichew Er (Methylphenidate Hcl) | Brand | 12 | 0 | $4,775 |
Frequently asked questions
What is Dr. Katelin Williamson's medical specialty?
Dr. Katelin Williamson practices Psychiatry Physician in Columbia, SC.
Where does Dr. Katelin Williamson practice?
Dr. Katelin Williamson practices at 720 Gracern RD Ste 120, Columbia, SC 292107657. Office phone: 8032962585.
What is Dr. Katelin Williamson's NPI?
Dr. Katelin Williamson's National Provider Identifier (NPI) is 1477967859, issued by NPPES.
Does Dr. Katelin Williamson accept Medicare assignment?
Yes. Dr. Katelin Williamson accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Katelin Williamson commonly perform?
Top Medicare-reported procedures in 2023: Psychiatric diagnostic evaluation with medical services (HCPCS 90792). Source: CMS Medicare Physician & Other Practitioners file.