Avinash Kashyap Viswanathan, M.D.
NPI 1639487911ActiveIndividual· Internal Medicine· Springfield, IL
Internal Medicine (M.D.) with Memorial Physician Services, practicing in Springfield, Illinois. Their prescriptions cost Medicare Part D more than their services did: $1,203,385 for 14,345 claims, against $80,641 paid for services in 2024. Lists Jacksonville Memorial Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1639487911 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Sep 20, 2010 |
| Last updated in NPPES | May 23, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036.133495 | IL |
| Internal Medicine | 207R00000X | 336.094733 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 356 |
|---|---|
| Services billed | 1,559 across 22 procedure codes |
| Paid by Medicare | $80,641 |
Part D prescriptions in 2024
| Prescriptions (claims) | 14,345 · 30,206 30-day fills |
|---|---|
| Patients | 890 |
| Total drug cost | $1,203,385 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 2010 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Memorial Physician ServicesChatham, IL · 165 clinicians
Hospital affiliations
- Jacksonville Memorial HospitalJacksonville, IL
- Memorial Medical CenterSpringfield, IL
- Sarah D Culbertson Memorial HospitalRushville, IL
- St Johns HospitalSpringfield, IL
- Taylorville Memorial HospitalTaylorville, IL
Other facilities
- Elara Caring VHome health agency · Springfield, IL
- Enhabit Home HealthHome health agency · Springfield, IL
- Hospice Care of IllinoisHospice · Springfield, IL
- Springfield Suites Rehab and NursingNursing home · Springfield, IL
- Villa Health Care EastNursing home · Sherman, IL
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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