Aaron L. Rittgers, MD
NPI 1205871423ActiveIndividual· Internal Medicine, Pulmonary Disease· Knoxville, TN
Internal Medicine, Pulmonary Disease (MD) in Knoxville, Tennessee, trained at Mercer University School of Medicine (class of 1998). In 2024 Medicare paid $75,061 for 351 patients, and Part D covered 342 of their prescriptions, 84% of them generic. Astrazeneca Pharmaceuticals LP was the largest of 3 companies reporting payments in 2025, $451.44 in all, mostly food and beverage.
Overview
| NPI | 1205871423 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 19, 2006 |
| Last updated in NPPES | May 27, 2025 |
| Certified by provider | May 27, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | 35297 | TN |
| Internal Medicine | 207R00000X | 35297 | TN |
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 (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 351 |
|---|---|
| Services billed | 1,040 across 11 procedure codes |
| Paid by Medicare | $75,061 |
Part D prescriptions in 2024
| Prescriptions (claims) | 342 · 366 30-day fills |
|---|---|
| Patients | 160 |
| Total drug cost | $26,981 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | Mercer University School of Medicine |
|---|---|
| Graduation year | 1998 |
| Medicare specialty | Internal Medicine |
Medical group
- Statcare Inpatient LLCKnoxville, TN · 109 clinicians
Hospital affiliations
- Fort Loudoun Medical CenterLenoir City, TN
- Parkwest Medical CenterKnoxville, TN
Other facilities
- Covenant HomecareHome health agency · Knoxville, TN
Industry payments (Open Payments)
- 2025$451.44 · 8 payments from 3 companies
- 2024$210.74 · 5 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $360.12 | 4 |
| E.R. Squibb & Sons, L.L.C. | $70.68 | 3 |
| Abbvie Inc. | $20.64 | 1 |
What the 2025 payments were for
- Food and Beverage$451.44 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 76 pulmonologists in Knoxville · All pulmonologists in Tennessee