Clarissa Grace Barnes, M.D.
NPI 1770758757ActiveIndividual· Internal Medicine· Yankton, SD
Internal Medicine (M.D.) in Yankton, South Dakota, trained at Johns Hopkins University School of Medicine (class of 2008). 188 Medicare patients in 2024, $30,264 paid; nearly all of their 101 Part D prescriptions were generic (96%).
Overview
| NPI | 1770758757 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 29, 2008 |
| Last updated in NPPES | Jan 16, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 8146 | SD |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (SD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 188 |
|---|---|
| Services billed | 416 across 11 procedure codes |
| Paid by Medicare | $30,264 |
Part D prescriptions in 2024
| Prescriptions (claims) | 101 · 105 30-day fills |
|---|---|
| Patients | 73 |
| Total drug cost | $4,109 |
| Generic share | 96% of claims |
Education and affiliations
| Medical school | Johns Hopkins University School of Medicine |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Internal Medicine |
Medical group
- Avera McKennanSioux Falls, SD · 959 clinicians
Hospital affiliations
- Avera Marshall Regional Medical CtrMarshall, MN
- Avera McKennan Hospital & University Health CenterSioux Falls, SD
- North Memorial Health HospitalRobbinsdale, MN
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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