Greg Parker, MD
Emergency Medicine · Hammond, LANPI 1255502316
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 54 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. Novo Nordisk accounts for 60.2% of it on its own, with 8 other manufacturers making up the rest. Reporting peaked in 2022 at $265 and has fallen 55.5% since, to $118 in 2025. Among emergency medicine clinicians in LA 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 54 payments — averaging $14.86 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Novo Nordisk$483
- Shockwave Medical, Inc$90
- Johnson & Johnson$78
- Vanda Pharmaceuticals Inc.$45
- AstraZeneca$42
- Otsuka America Pharmaceutical, Inc.$22
- plus $42 from 3 others
What the payments were for
- Food & beverage$802100%
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 | 42 | $483 |
| Shockwave Medical, Inc | 1 | $90 |
| Johnson & Johnson | 2 | $78 |
| Vanda Pharmaceuticals Inc. | 2 | $45 |
| AstraZeneca | 3 | $42 |
| Otsuka America Pharmaceutical, Inc. | 1 | $22 |
| Xeris Pharmaceuticals, Inc. | 1 | $22 |
| Impulse Dynamics (USA) Inc. | 1 | $16 |
| Phathom Pharmaceuticals, Inc. | 1 | $4 |
How this compares
$802 in reported general payments places this provider in the 90th percentile of 881 emergency medicine providers in Louisiana.
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 |
|---|---|---|
| Ondansetron OdtOndansetron | 41 | $286 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 57 | $165 |
| Cephalexin | 40 | $162 |
| Ciprofloxacin Hcl | 19 | $143 |
| Metronidazole | 15 | $105 |
| Methylprednisolone | 19 | $101 |
| Meclizine Hcl | 15 | $54 |
| Potassium Chloride | 18 | $37 |
Paid to pharmacies, not to this prescriber.
Other emergency medicine in Hammond
- Shaun CarpenterHammond$10K
- John GuidryHammond$2K
- David ToupsHammond$1K
- Lucas AinsworthHammond$724
- Fred WillisShreveport$427K
- Bryant BoydShreveport$83K
- Thomas ArnoldShreveport$48K
- Noah PoresNew Orleans$34K
- Granville MorseNew Orleans$32K
- Claude DantonioNew Orleans$26K
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.