AARON L RITTGERS
Allopathic & Osteopathic Physicians|Internal Medicine|Pulmonary Disease KNOXVILLE, TN NPI 1205871423
Browse related groups: Allopathic & Osteopathic Physicians|Internal Medicine|Pulmonary Disease TN Acerta Pharma LLC All categories
General Payments — all program years on this page
$1,335.96
- Category: General Payments
- Program years: PY2018–2024
- Record count: 41
- As of (CMS publication): 2026-01-23
Latest program year (PY2024): $210.74 across 5 records · disputed records: 0
Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.
How this figure is calculated
- The total is the sum of the General Payments records CMS published for the labeled program year(s), exactly as published. Nothing is estimated, weighted, or combined across categories.
- General Payments only. Research and Ownership/Investment are separate datasets and are never summed with these figures; amounts are kept separate per program year.
- Featured-page threshold (a presentation gate, not a judgment): records>=3 OR total>=100 (all years).
- Methodology & Data — sourcing, labeling, and limitations.
By nature of payment
Latest program year (PY2024) · sorted by reported total.
| Nature of payment | Amount | Records |
|---|---|---|
| Food and Beverage | $210.74 | 5 |
By paying entity
Latest program year (PY2024) · sorted by reported total.
| Paying entity | Amount | Records |
|---|---|---|
| Acerta Pharma LLC | $150.94 | 2 |
| PFIZER INC. | $59.80 | 3 |
By program year
Records — PY2024 (5)
| Record ID | Paying entity | Amount | Date | Nature of payment | Dispute status | Published | Source |
|---|---|---|---|---|---|---|---|
| 1104368583 | AstraZeneca Pharmaceuticals LP | $25.95 | 08/28/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1104610840 | AstraZeneca Pharmaceuticals LP | $124.99 | 09/18/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1131326637 | PFIZER INC. | $17.78 | 03/27/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1131415350 | PFIZER INC. | $21.01 | 11/07/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1131437304 | PFIZER INC. | $21.01 | 09/24/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
Provenance & corrections
- Dataset: CMS Open Payments — General Payments
- Source: CMS Open Payments dataset (bulk file)
- Publisher of source data: Centers for Medicare & Medicaid Services
- Generated from: OP_DTL_GNRL_PGYR2024_P01232026_01102026.csv
One page per canonical provider; split Profile_IDs are merged via Associated_Covered_Recipient_Profile_ID_1/_2 from the Covered Recipient Profile Supplement.
Corrections to the substance of a record route to CMS through its review-and-dispute process; errors in how this site mirrors or displays a record route to us. Both paths are described in Methodology & Data.