Amber Tierney, MD
Gastroenterology · West Des Moines, IANPI 1902191059
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 97.6% of the total across 15 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 7 manufacturers reported payments, led by AbbVie at 36.4% of the total. 2024 is the largest year on record at $264, 10.0 times the $27 reported in 2019. That places this record below the midpoint for gastroenterology clinicians in IA, where the typical reported total is $554.
Across 15 payments — averaging $32.14 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$175
- Gilead$94
- Johnson & Johnson$94
- Ardelyx, Inc.$59
- Medtronic$30
- Olympus America Inc.$15
- plus $13 from 1 others
Across 8 payments — averaging $3187.50 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.
- Bausch Health US, LLC$26K
What the payments were for
- Food & beverage$47098%
- Education$122%
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 |
|---|---|---|
| AbbVie | 6 | $175 |
| Gilead | 1 | $94 |
| Johnson & Johnson(2 entities) | 4 | $94 |
| Ardelyx, Inc. | 1 | $59 |
| Medtronic | 1 | $30 |
| Olympus America Inc. | 1 | $15 |
| Ferring Pharmaceuticals Inc. | 1 | $13 |
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.
- Skyrizi$122
How this compares
$482 in reported general payments places this provider in the 45th percentile of 113 gastroenterology providers in Iowa.
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 |
|---|---|---|
| StelaraUstekinumab | 15 | $376,617 |
| Mesalamine | 45 | $17,052 |
| LinzessLinaclotide | 17 | $14,362 |
| Sod Sulf-Potass Sulf-Mag SulfSodium, Potassium,mag Sulfates | 189 | $11,611 |
| Mesalamine ErMesalamine | 11 | $4,977 |
| Peg 3350-ElectrolyteSodium Chloride/Nahco3/Kcl/Peg | 104 | $2,231 |
| Pantoprazole Sodium | 92 | $1,271 |
| Omeprazole | 110 | $1,184 |
| Colestipol Hcl | 13 | $1,156 |
| Sulfasalazine | 25 | $823 |
| Azathioprine | 19 | $772 |
| Lactulose | 23 | $590 |
| Gavilyte-NSodium Chloride/Nahco3/Kcl/Peg | 26 | $374 |
| Sucralfate | 18 | $271 |
| Famotidine | 34 | $257 |
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 |
|---|---|---|
| Johnson & JohnsonStelara | $94 | $376,61715 claims |
| AbbVieLinzess | $175 | $14,36217 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 45th percentile of 113 gastroenterology providers in Iowa.
Other gastroenterology in West Des Moines
- Ramon ReyesWest Des Moines$2K
- Tyler AasenWest Des Moines$2K
- Shawn HancockWest Des Moines$891
- Justin RiceWest Des Moines$598
- Laura DakovichWest Des Moines$477
- Nagendra MyneniClive$66K
- Ryan PerumpailBettendorf$62K
- Richard ManfreadyWaterloo$56K
- Maen MasadehIowa City$24K
- Mohammed IrshadClinton$18K
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.