David C. Mares, MD
NPI 1396770335ActiveIndividual· Internal Medicine, Pulmonary Disease· Anderson, IN
Internal Medicine, Pulmonary Disease (MD) in Anderson, Indiana, trained at Indiana University School of Medicine (class of 1998). Their prescriptions cost Medicare Part D more than their services did: $2,645,330 for 5,622 claims, against $144,883 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 18 companies reporting payments in 2025, $227,946 in all, mostly speaking and faculty fees.
Overview
| NPI | 1396770335 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 11, 2006 |
| Last updated in NPPES | Dec 19, 2024 |
| Certified by provider | Dec 19, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | 01041834 | IN |
| Internal Medicine, Critical Care Medicine | 207RC0200X | 01041834 | IN |
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 - Pulmonary Disease (IN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 366 |
|---|---|
| Services billed | 1,408 across 41 procedure codes |
| Paid by Medicare | $144,883 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,622 · 8,187 30-day fills |
|---|---|
| Patients | 603 |
| Total drug cost | $2,645,330 |
| Generic share | 63% of claims |
Education and affiliations
| Medical school | Indiana University School of Medicine |
|---|---|
| Graduation year | 1998 |
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Critical Care (Intensivists) |
Medical group
- Medical Specialists of Madison County PCElwood, IN · 4 clinicians
Hospital affiliations
- Ascension St Vincent AndersonAnderson, IN
- Ascension St Vincent KokomoKokomo, IN
- Ascension St Vincent MercyElwood, IN
- Community Hospital of Anderson and Madison CountyAnderson, IN
Other facilities
- Compassus - IndianapolisHospice · Muncie, IN
- Southerncare South BendHospice · Mishawaka, IN
Industry payments (Open Payments)
- 2025$227,946 · 246 payments from 18 companies
- 2024$214,944 · 235 payments from 22 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $152,197 | 128 |
| Grifols USA, LLC | $35,131 | 26 |
| Viatris Specialty LLC | $26,536 | 26 |
| Verona Pharma, Inc. | $10,903 | 13 |
| Regeneron Healthcare Solutions, Inc. | $2,226 | 5 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$208,596 · 84 payments
- Honoraria$10,000 · 3 payments
- Food and Beverage$6,411 · 145 payments
- Travel and Lodging$2,922 · 13 payments
- Education$17.38 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Pulmonary Disease providers in Anderson
- 1508891664
- 1205861242
- 1467685677
- 1598766321
- 1700071487
- 1760445050
- 1740215805
- 1871978312
All Internal Medicine, Pulmonary Disease providers in Indiana →