Nathan Hartgrove
Internal Medicine · Chattanooga, TNNPI 1538420229
Payments from drug & device makers
Across 292 payments — averaging $15.07 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Novo Nordisk$535
- AstraZeneca$476
- Amgen$355
- AbbVie$352
- Pfizer$256
- Astellas Pharma US Inc$234
- plus $2K from 25 others
What the payments were for
- Food & beverage$4,30198%
- Education$1002%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
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 |
|---|---|---|
| Novo Nordisk | 46 | $535 |
| AstraZeneca | 31 | $476 |
| Amgen(2 entities) | 27 | $355 |
| AbbVie(2 entities) | 25 | $352 |
| Pfizer | 17 | $256 |
| Astellas Pharma US Inc | 8 | $234 |
| Johnson & Johnson | 10 | $209 |
| Sanofi-aventis U.S. LLC | 13 | $191 |
| Biohaven Pharmaceuticals, Inc. | 10 | $177 |
| Amarin Pharma, Inc. | 10 | $175 |
| Novartis | 8 | $168 |
| Arbor Pharmaceuticals, Inc. | 12 | $161 |
| Esperion Therapeutics, Inc. | 8 | $139 |
| Eisai Inc. | 7 | $134 |
| Merck | 9 | $123 |
| Boehringer Ingelheim | 8 | $119 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 7 | $106 |
| GSK | 7 | $87 |
| Lilly USA, LLC | 6 | $75 |
| Kowa Pharmaceuticals America, Inc. | 5 | $60 |
| Gilead | 4 | $59 |
| Takeda Pharmaceuticals U.S.A., Inc. | 3 | $53 |
| Abbott | 2 | $41 |
| Jazz Pharmaceuticals Inc. | 2 | $29 |
| Regeneron Healthcare Solutions, Inc. | 1 | $16 |
| Mylan Specialty L.p. | 1 | $14 |
| Sunovion Pharmaceuticals Inc. | 1 | $14 |
| Medtronic | 1 | $12 |
| E.r. Squibb & Sons, L.L.C. | 1 | $12 |
| Boston Scientific | 1 | $11 |
| Clarus Therapeutics Inc. | 1 | $10 |
How this compares
$4,401 in reported general payments places this provider in the 85th percentile of 2,216 internal medicine providers in Tennessee.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| OzempicSemaglutide | 74 | $72,961 |
| EliquisApixaban | 23 | $24,324 |
| GlyxambiEmpagliflozin/Linagliptin | 12 | $6,874 |
| Xigduo XrDapaglifloz Propaned/Metformin | 12 | $6,571 |
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 85 | $2,394 |
| Buprenorphine | 12 | $2,365 |
| Testosterone Cypionate | 18 | $1,432 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 46 | $1,317 |
| Albuterol Sulfate HfaAlbuterol Sulfate | 36 | $1,269 |
| Gabapentin | 79 | $981 |
| Esomeprazole Magnesium | 17 | $864 |
| Levothyroxine Sodium | 94 | $843 |
| Rosuvastatin Calcium | 49 | $745 |
| Losartan Potassium | 57 | $694 |
| Armour ThyroidThyroid,pork | 16 | $664 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| Novo NordiskOzempic | $535 | $72,96174 claims |
| PfizerEliquis | $256 | $24,32423 claims |
| Boehringer IngelheimGlyxambi | $119 | $6,87412 claims |
| AbbVieArmour Thyroid | $352 | $66416 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 85th percentile of 2,216 internal medicine providers in Tennessee.
Other internal medicine in Chattanooga
- Mark McKenzieChattanooga$11.9M
- 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
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.