John Sistrunk, MD
Endocrinology, Diabetes & Metabolism · Jackson, MSNPI 1164430419
Payments from drug & device makers
What this record shows
The money is spread across several categories — consulting fees (51.8%), speaking fees and food and beverage — rather than concentrated in one kind of arrangement. 14 manufacturers reported payments, led by Amgen at 58.0% of the total. Reporting peaked in 2020 at $16,731 and has fallen 82.6% since, to $2,913 in 2025.
Across 131 payments — averaging $311.61 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Amgen$24K
- Eli Lilly$7K
- AbbVie$4K
- Ortho-clinical Diagnostics, Inc.$2K
- Quidel Corporation$2K
- Novo Nordisk$438
- plus $1K from 8 others
Across 3 payments — averaging $30,608 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.
- Ortho-clinical Diagnostics, Inc.$92K
What the payments were for
- Consulting fees$21,15052%
- Speaking & faculty fees$15,49838%
- Travel & lodging$7352%
- Food & beverage$3,3698%
- Education$690%
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(2 entities) | 21 | $23,671 |
| Eli Lilly | 3 | $7,388 |
| AbbVie | 63 | $4,142 |
| Ortho-clinical Diagnostics, Inc. | 1 | $2,400 |
| Quidel Corporation | 1 | $1,500 |
| Novo Nordisk | 4 | $438 |
| Amneal Pharmaceuticals LLC | 27 | $406 |
| Ascendis Pharma Endocrinology Inc | 2 | $236 |
| Corcept Therapeutics | 2 | $230 |
| Eisai Inc. | 2 | $124 |
| Lilly USA, LLC | 1 | $92 |
| Exelixis Inc. | 1 | $87 |
| AstraZeneca | 1 | $76 |
| IBSA Pharma Inc. | 2 | $33 |
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
How this compares
$40,821 in reported general payments places this provider in the 80th percentile of 48 endocrinology, diabetes & metabolism providers in Mississippi.
See all endocrinology, diabetes & metabolism providers in Mississippi →
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 |
|---|---|---|
| SynthroidLevothyroxine Sodium | 395 | $27,816 |
| UnithroidLevothyroxine Sodium | 13 | $2,204 |
| Levothyroxine Sodium | 76 | $645 |
| EuthyroxLevothyroxine Sodium | 40 | $308 |
| Methimazole | 23 | $146 |
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 |
|---|---|---|
| AbbVieSynthroid | $4,142 | $27,816395 claims |
| Amneal Pharmaceuticals LLCUnithroid, Levothyroxine Sodium | $406 | $2,84889 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 48 endocrinology, diabetes & metabolism providers in Mississippi.
Other endocrinology, diabetes & metabolism in Jackson
- Eric DyessJackson$885K
- Honey EastJackson$721K
- Ben SealeJackson$623K
- Amanda SchieferJackson$204K
- Raymond GrenfellJackson$16K
- Vanessa SandiferJackson$14K
- John KnightJackson$9K
- Jana PhillipsJackson$8K
- Robert EvansJackson$8K
- Christina GloverJackson$7K
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.