Nathan Gray, MD
Internal Medicine · Knoxville, TNNPI 1952347999
Payments from drug & device makers
Across 263 payments — averaging $12.60 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Amgen$682
- AbbVie$639
- GSK$386
- Novo Nordisk$241
- Pfizer$145
- E.r. Squibb & Sons, L.L.C.$144
- plus $1K from 31 others
What the payments were for
- Food & beverage$3,302100%
- Education$120%
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 |
|---|---|---|
| Amgen | 62 | $682 |
| AbbVie(2 entities) | 62 | $639 |
| GSK | 25 | $386 |
| Novo Nordisk | 25 | $241 |
| Pfizer | 10 | $145 |
| E.r. Squibb & Sons, L.L.C. | 9 | $144 |
| Novartis | 8 | $120 |
| Boehringer Ingelheim | 7 | $116 |
| Abbott | 7 | $96 |
| Heartflow, Inc. | 1 | $86 |
| Radius Health, Inc. | 4 | $71 |
| Biohaven Pharmaceuticals, Inc. | 4 | $53 |
| Esperion Therapeutics, Inc. | 3 | $44 |
| Johnson & Johnson | 3 | $44 |
| AstraZeneca | 3 | $43 |
| Amarin Pharma, Inc. | 3 | $40 |
| Xeris Pharmaceuticals, Inc. | 2 | $32 |
| Teva Pharmaceuticals USA, Inc. | 2 | $30 |
| Eisai Inc. | 2 | $28 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 2 | $25 |
| Kowa Pharmaceuticals America, Inc. | 2 | $23 |
| ARS Pharmaceuticals Operations, Inc. | 1 | $21 |
| W. L. Gore & Associates, Inc. | 1 | $19 |
| Dexcom, Inc. | 1 | $18 |
| Philips North America LLC | 1 | $17 |
| Lundbeck LLC | 1 | $15 |
| Astellas Pharma US Inc | 1 | $15 |
| Medtronic | 1 | $15 |
| Lilly USA, LLC | 1 | $14 |
| Merck | 1 | $14 |
| Biohaven Pharmaceutical Holding Company Ltd. | 1 | $14 |
| Boston Scientific | 1 | $13 |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $13 |
| Regeneron Healthcare Solutions, Inc. | 1 | $12 |
| Sanofi-aventis U.S. LLC | 1 | $12 |
| Clarus Therapeutics Inc. | 2 | $10 |
| Vapotherm Inc | 1 | $7 |
How this compares
$3,314 in reported general payments places this provider in the 80th percentile of 2,216 internal medicine providers in Tennessee.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| EliquisApixaban | 37 | $36,980 |
| OzempicSemaglutide | 27 | $34,030 |
| JanuviaSitagliptin Phosphate | 11 | $16,754 |
| JardianceEmpagliflozin | 17 | $16,720 |
| XareltoRivaroxaban | 13 | $14,806 |
| GlyxambiEmpagliflozin/Linagliptin | 20 | $12,772 |
| Janumet XrSitagliptin Phos/Metformin Hcl | 17 | $12,070 |
| SynthroidLevothyroxine Sodium | 86 | $6,174 |
| MyrbetriqMirabegron | 14 | $5,859 |
| ShingrixVaricella-Zoster Ge/As01b/Pf | 22 | $4,975 |
| AbrysvoRsv Vacc, Pref A And Pref B/Pf | 13 | $4,178 |
| Saxagliptin Hcl | 13 | $4,122 |
| Rosuvastatin Calcium | 211 | $2,438 |
| Boostrix TdapDiphth,pertuss(Acell),tet Vac | 33 | $2,319 |
| Atorvastatin Calcium | 322 | $2,311 |
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 |
|---|---|---|
| PfizerEliquis, Abrysvo | $145 | $41,15950 claims |
| Novo NordiskOzempic | $241 | $34,03027 claims |
| Boehringer IngelheimJardiance, Glyxambi | $116 | $29,49237 claims |
| MerckJanuvia, Janumet Xr | $14 | $28,82428 claims |
| Johnson & JohnsonXarelto | $44 | $14,80613 claims |
| AbbVieSynthroid | $639 | $6,17486 claims |
| Astellas Pharma US IncMyrbetriq | $15 | $5,85914 claims |
| GSKShingrix | $386 | $4,97522 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 80th percentile of 2,216 internal medicine providers in Tennessee.
Other internal medicine in Knoxville
- Amanda Moore MillerKnoxville$2.3M
- George NewmanKnoxville$682K
- Dennis DeruelleKnoxville$263K
- Lewis HagoodKnoxville$143K
- Johnny AltawilKnoxville$23K
- Mark McKenzieChattanooga$11.9M
- Bernard GrunstraBristol$6.4M
- Jewel WhiteKingsport$5.7M
- Judith WhiteKingsport$5.6M
- Obadias MarquezOoltewah$2.8M
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.