John Parker, MD
Endocrinology, Diabetes & Metabolism · Wilmington, NCNPI 1457345928
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $160,824 of the $225,308 with a category attached, or 71.4%. 60 manufacturers reported payments, led by Corcept Therapeutics at 38.8% of the total. 2025 is the largest year on record at $70,400, 3.2 times the $21,819 reported in 2019. Among endocrinology, diabetes & metabolism clinicians in NC with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 1,297 payments — averaging $173.72 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Corcept Therapeutics$87K
- Novo Nordisk$53K
- AstraZeneca$35K
- Insulet Corporation$19K
- Pfizer$10K
- Esperion Therapeutics, Inc.$7K
- plus $14K from 54 others
Across 659 payments — averaging $6006.13 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.
- Eli Lilly$2.3M
- AbbVie$596K
- Pfizer$581K
- Novo Nordisk AS$106K
- Corcept Therapeutics$88K
- Gilead$79K
- plus $218K from 11 others
What the payments were for
- Consulting fees$35,18516%
- Speaking & faculty fees$160,82471%
- Travel & lodging$7,5073%
- Food & beverage$21,57510%
- Education$1670%
- Other$500%
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.
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
$225,308 in reported general payments places this provider in the 90th percentile of 232 endocrinology, diabetes & metabolism providers in North Carolina.
See all endocrinology, diabetes & metabolism providers in North Carolina →
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 |
|---|---|---|
| KorlymMifepristone | 70 | $1,230,474 |
| OzempicSemaglutide | 325 | $556,723 |
| TrulicityDulaglutide | 88 | $122,197 |
| MounjaroTirzepatide | 84 | $100,977 |
| Omnipod 5 Dexg7g6 Pods (Gen 5)Insulin Pump Cart,auto,bt,g6/7 | 64 | $96,992 |
| JardianceEmpagliflozin | 67 | $72,762 |
| JanuviaSitagliptin Phosphate | 79 | $63,030 |
| SynthroidLevothyroxine Sodium | 513 | $48,253 |
| RybelsusSemaglutide | 28 | $46,714 |
| FarxigaDapagliflozin Propanediol | 31 | $45,599 |
| Tresiba Flextouch U-200Insulin Degludec | 19 | $26,126 |
| Soliqua 100-33Insulin Glargine/Lixisenatide | 17 | $24,645 |
| Humalog Kwikpen U-200Insulin Lispro | 21 | $22,409 |
| Tresiba Flextouch U-100Insulin Degludec | 25 | $21,603 |
| NovologInsulin Aspart | 44 | $20,399 |
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 |
|---|---|---|
| Corcept TherapeuticsKorlym | $87,445 | $1,230,47470 claims |
| Novo NordiskOzempic, Rybelsus, Novolog, Wegovy | $53,461 | $641,833411 claims |
| Lilly USA, LLCTrulicity, Mounjaro, Humalog | $1,710 | $241,336229 claims |
| Boehringer IngelheimJardiance, Synjardy Xr | $888 | $86,33678 claims |
| MerckJanuvia | $442 | $63,03079 claims |
| AbbVieSynthroid, Armour Thyroid | $115 | $54,183589 claims |
| AstraZenecaFarxiga | $35,082 | $45,59931 claims |
| Sanofi-aventis U.S. LLCSoliqua 100-33, Lantus | $1,328 | $27,59834 claims |
| Amneal Pharmaceuticals LLCLevothyroxine Sodium | $152 | $10,574866 claims |
| IBSA Pharma Inc.Tirosint | $378 | $10,29441 claims |
| Antares Pharma, Inc.Xyosted | $886 | $9,11315 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 90th percentile of 232 endocrinology, diabetes & metabolism providers in North Carolina.
Other endocrinology, diabetes & metabolism in Wilmington
- Michael FavoritoWilmington$723K
- Seth BraunsteinWilmington$134K
- Lauren GratianWilmington$34K
- Sean McCalmonWilmington$10K
- Michael McGarrityWilmington$9K
- Mark WarrenGreenville$915K
- Thomas OconnellBurlington$805K
- Corey BerlinRaleigh$742K
- Stephen SouthGreensboro$624K
- Richard DoddAsheville$526K
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.