Alexander Sarkisian, MD
Gastroenterology · Dakota Dunes, SDNPI 1174985568
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $18,872 of the $25,901 with a category attached, or 72.9%. Celltrion USA Inc. accounts for 90.0% of it on its own, with 15 other manufacturers making up the rest. 2024 is the largest year on record at $23,508, more than ten times the $335 reported in 2019.
Across 93 payments — averaging $278.51 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Celltrion USA Inc.$23K
- AbbVie$750
- Boston Scientific$374
- Medtronic$244
- Takeda Pharmaceuticals U.S.A., Inc.$219
- Gilead$218
- plus $792 from 10 others
What the payments were for
- Consulting fees$3,99015%
- Travel & lodging$18,87273%
- Food & beverage$2,84711%
- Education$1921%
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 |
|---|---|---|
| Celltrion USA Inc. | 26 | $23,304 |
| AbbVie(2 entities) | 30 | $750 |
| Boston Scientific | 4 | $374 |
| Medtronic | 3 | $244 |
| Takeda Pharmaceuticals U.S.A., Inc. | 8 | $219 |
| Gilead | 2 | $218 |
| Intercept Pharmaceuticals, Inc. | 3 | $153 |
| Ardelyx, Inc. | 3 | $137 |
| W. L. Gore & Associates, Inc. | 1 | $135 |
| Olympus America Inc. | 1 | $91 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 4 | $78 |
| Apollo Endosurgery US Inc | 1 | $74 |
| Braintree Laboratories, Inc. | 3 | $51 |
| Shire North American Group Inc | 2 | $33 |
| Regeneron Healthcare Solutions, Inc. | 1 | $24 |
| Nestle Healthcare Nutrition Inc. | 1 | $16 |
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.
- ZYMFENTRA$22,859
- Epclusa$218
- VIATORR TIPS Endoprosthesis w/ Controlled Expansion$135
- OCALIVA$126
- Humira$122
- Emprint$121
- GENERAL - BILIARY DEVICES$115
- IBSRELA$112
- SPYGLASS$111
How this compares
$25,901 in reported general payments places this provider in the 85th percentile of 41 gastroenterology providers in South Dakota.
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 |
|---|---|---|
| Sod Sulf-Potass Sulf-Mag SulfSodium, Potassium,mag Sulfates | 293 | $18,874 |
| LinzessLinaclotide | 16 | $9,557 |
| SuflavePeg 3350/Sod Sulf,chlr/Pot/Mag | 37 | $4,477 |
| Budesonide DrBudesonide | 30 | $4,327 |
| Colestipol Hcl | 49 | $3,469 |
| Pantoprazole Sodium | 178 | $2,122 |
| Ursodiol | 11 | $1,361 |
| SuprepSodium, Potassium,mag Sulfates | 11 | $1,178 |
| Sucralfate | 17 | $1,004 |
| Dicyclomine Hcl | 21 | $486 |
| Gavilyte-GPeg3350/Sod Sulf,bicarb,cl/Kcl | 32 | $336 |
| Peg-3350 And ElectrolytesPeg3350/Sod Sulf,bicarb,cl/Kcl | 17 | $212 |
| Omeprazole | 32 | $152 |
| Famotidine | 16 | $107 |
| Gabapentin | 13 | $83 |
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 |
|---|---|---|
| AbbVieLinzess | $750 | $9,55716 claims |
| Braintree Laboratories, Inc.Suflave | $51 | $4,47737 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 85th percentile of 41 gastroenterology providers in South Dakota.
Other gastroenterology in Dakota Dunes
- Sarah BlighDakota Dunes$1K
- Jeffrey MichalakDakota Dunes$1K
- Michael PersaudDakota Dunes$13
- Chandar SingaramSioux Falls$125K
- Erik NessSioux Falls$50K
- Cristina Hill JensenSioux Falls$49K
- Mouhanna Abu GhanimehSioux Falls$34K
- Muhammad FaisalSioux Falls$30K
- Ali ZakariaRapid City$17K
- Oksana AleksenkoRapid City$6K
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.