Casey Jack Cronan, DO
NPI 1821415647ActiveIndividual· Internal Medicine, Infectious Disease· Spartanburg, SC
Internal Medicine, Infectious Disease (DO) with Spartanburg Medical Center, practicing in Spartanburg, South Carolina. Their prescriptions cost Medicare Part D more than their services did: $2,028,807 for 1,793 claims, against $43,037 paid for services in 2024. Viiv Healthcare Company was the largest of 5 companies reporting payments in 2025, $152.22 in all, mostly food and beverage. Lists Cherokee Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1821415647 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Mar 19, 2014 |
| Last updated in NPPES | Dec 15, 2020 |
| Certified by provider | Dec 15, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | 39100 | SC |
| Internal Medicine, Infectious Disease | 207RI0200X | 071594 | GA |
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 - Infectious Disease (SC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 117 |
|---|---|
| Services billed | 552 across 12 procedure codes |
| Paid by Medicare | $43,037 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,793 · 1,876 30-day fills |
|---|---|
| Patients | 93 |
| Total drug cost | $2,028,807 |
| Generic share | 62% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Infectious Disease |
Medical group
- Spartanburg Medical CenterSpartanburg, SC · 1,078 clinicians
Hospital affiliations
- Cherokee Medical CenterGaffney, SC
- Pelham Medical CenterGreer, SC
- Spartanburg Medical CenterSpartanburg, SC
Industry payments (Open Payments)
- 2025$152.22 · 7 payments from 5 companies
- 2024$176.87 · 7 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Viiv Healthcare Company | $68.95 | 3 |
| Gilead Sciences, Inc. | $29.26 | 1 |
| Melinta Therapeutics, LLC | $21.95 | 1 |
| Pfizer Inc. | $17.98 | 1 |
| Abbvie Inc. | $14.08 | 1 |
What the 2025 payments were for
- Food and Beverage$152.22 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Infectious Disease providers in South Carolina →