Mark McKenzie
Internal Medicine · Chattanooga, TNNPI 1821064122
Payments from drug & device makers
Across 1,173 payments — averaging $10,127 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Modernatx, Inc.$6.3M
- AbbVie$1.3M
- Pfizer$960K
- Novavax Inc$631K
- Ironwood Pharmaceuticals, Inc$440K
- Eli Lilly$427K
- plus $1.8M from 26 others
Across 70 payments — averaging $2697.78 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Glenmark Pharmaceuticals Inc., USA$124K
- Ichnos Glenmark Innovation Inc$36K
- Eli Lilly$17K
- Pfizer$11K
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
| Company | Payments | Total |
|---|---|---|
| Modernatx, Inc. | 298 | $6,262,707 |
| AbbVie(2 entities) | 259 | $1,312,028 |
| Pfizer | 87 | $959,571 |
| Novavax Inc | 32 | $630,868 |
| Ironwood Pharmaceuticals, Inc | 44 | $439,933 |
| Eli Lilly | 58 | $427,357 |
| Regeneron | 14 | $222,189 |
| Rhythm Pharmaceuticals, Inc. | 16 | $182,721 |
| Vanda Pharmaceuticals Inc. | 32 | $156,608 |
| Novartis | 3 | $155,921 |
| Cue Health Inc. | 4 | $135,532 |
| H. Lundbeck A S | 20 | $132,016 |
| Gilead | 44 | $124,103 |
| Merck | 4 | $101,707 |
| Abbott | 4 | $98,009 |
| AstraZeneca | 4 | $74,244 |
| Takeda Pharmaceuticals U.S.A., Inc. | 18 | $72,937 |
| Bristol Myers Squibb | 14 | $63,217 |
| Hemosonics LLC | 2 | $61,130 |
| Kowa Research Institute, Inc. | 32 | $49,951 |
| Sanofi Pasteur Inc. | 4 | $44,458 |
| Sanofi US Services Inc. | 4 | $41,909 |
| Astrazeneca UK Limited | 2 | $33,471 |
| BD | 3 | $29,575 |
| LEO Pharma AS | 3 | $17,751 |
| GSK | 11 | $17,532 |
| Biohaven Pharmaceutical Holding Company Ltd. | 6 | $14,525 |
| Novo Nordisk AS | 143 | $9,970 |
| E.r. Squibb & Sons, L.L.C. | 5 | $5,740 |
| Shire North American Group Inc | 1 | $600 |
| Sanofi | 1 | $98 |
| Boston Scientific | 1 | $20 |
How this compares
$11,878,397 in reported general payments places this provider in the 95th percentile of 2,216 internal medicine providers in Tennessee.
Other internal medicine in Chattanooga
- Charles CrumpChattanooga$1M
- Eugene RyanChattanooga$636K
- Valerie BoazChattanooga$105K
- Carlton VollbergChattanooga$105K
- Maighan SeagroveChattanooga$78K
- Jeremy HogstromChattanooga$30K
- Jermaine HogstromChattanooga$29K
- Bernard GrunstraBristol$6.4M
- Jewel WhiteKingsport$5.7M
- Judith WhiteKingsport$5.6M
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.