Doctor profile · Federal record
Dr. Jennifer Williamson, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Brookings, SD
- NPI 1427305721
- Accepts Medicare
- MIPS 93.3 / 100 · 2023
- 20 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
400 22Nd Ave
Brookings, SD 570062450
(605) 697-9500
Credentials & registration
- NPI registered
- August 2012 — 14 yrs on file
- Profile last updated
- March 17, 2016
- Year of graduation
- 2006 — 20 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- South Dakota #9507
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1427305721. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,571
Distinct HCPCS
9
Medicare allowed
$152,018
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 710 | 437 | $94 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 372 | 269 | $63 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 349 | 349 | $127 | |
99495 |
Transitional care management services for problem of at least moderate complexity | 48 | 43 | $135 | |
G0438 |
Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit | 27 | 27 | $162 | |
99496 |
Transitional care management services for problem of high complexity | 20 | 18 | $185 | |
G0180 |
Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and | 18 | 17 | $51 | |
G0402 |
Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment | 14 | 14 | $127 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 13 | 13 | $32 |
In context: peer comparison
Among 2 peers in Brookings Internal Medicine Physician, average services per provider: 151. This provider delivers 10× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
4,792
Patients
1,213
Total drug cost
$203,216
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levothyroxine Sodium | Generic | 700 | 165 | $8,323 |
| Losartan Potassium | Generic | 658 | 161 | $8,971 |
| Atorvastatin Calcium | Generic | 504 | 136 | $7,096 |
| Amlodipine Besylate | Generic | 360 | 90 | $3,660 |
| Rosuvastatin Calcium | Generic | 317 | 90 | $8,927 |
| Metformin Hcl | Generic | 311 | 87 | $3,192 |
| Omeprazole | Generic | 269 | 71 | $3,731 |
| Lisinopril | Generic | 257 | 68 | $2,441 |
| Metoprolol Succinate | Generic | 256 | 60 | $4,161 |
| Potassium Chloride | Generic | 242 | 64 | $6,857 |
Hospital affiliations
Frequently asked questions
What is Dr. Jennifer Williamson's medical specialty?
Dr. Jennifer Williamson practices Internal Medicine Physician in Brookings, SD.
Where does Dr. Jennifer Williamson practice?
Dr. Jennifer Williamson practices at 400 22Nd Ave, Brookings, SD 570062450. Office phone: 6056979500.
What is Dr. Jennifer Williamson's NPI?
Dr. Jennifer Williamson's National Provider Identifier (NPI) is 1427305721, issued by NPPES.
Does Dr. Jennifer Williamson accept Medicare assignment?
Yes. Dr. Jennifer Williamson accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Jennifer Williamson commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439). Source: CMS Medicare Physician & Other Practitioners file.