RxDoctor Payments Data

Neehar Parikh, MD

Gastroenterology · Ann Arbor, MINPI 1669655478

Payments from drug & device makers

What this record shows

This record is dominated by consulting fees: $84,901 of the $101,216 with a category attached, or 83.9%. 15 manufacturers reported payments, led by Exelixis Inc. at 29.5% of the total. Reporting peaked in 2019 at $32,301 and has fallen 76.8% since, to $7,503 in 2025. Among gastroenterology clinicians in MI with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.

$101,216in general payments, 2019–2025

Across 89 payments — averaging $1137.26 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

  • Exelixis Inc.$30K
  • Eisai Inc.$15K
  • E.r. Squibb & Sons, L.L.C.$11K
  • Genentech USA, Inc.$9K
  • Exact Sciences$6K
  • Gilead$6K
  • plus $25K from 9 others
$249,733in research payments, 2019–2025

Across 74 payments — averaging $3374.77 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.

  • Genentech, Inc.$185K
  • Bayer$55K
  • Eli Lilly$10K

What the payments were for

  • Consulting fees$84,90184%
  • Speaking & faculty fees$8,0308%
  • Travel & lodging$5,0675%
  • Food & beverage$3,1203%
  • Education$990%

General payments by program year

19
20
21
22
23
24
25

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.

CompanyPaymentsTotal
Exelixis Inc.15$29,892
Eisai Inc.13$14,514
E.r. Squibb & Sons, L.L.C.3$10,725
Genentech USA, Inc.11$8,713
Exact Sciences6$6,485
Gilead11$5,578
Merck6$5,366
Fujifilm Healthcare Americas Corporation7$4,161
Genentech, Inc.1$3,745
AstraZeneca4$3,736
Sirtex Medical Inc2$3,254
Bayer5$2,153
Eli Lilly2$1,593
Fujifilm Wako Diagnostics U.S.A. Corporation2$1,202
Astellas Pharma US Inc1$99

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

$101,216 in reported general payments places this provider in the 95th percentile of 497 gastroenterology providers in Michigan.

See all gastroenterology providers in Michigan

Medicare billing

Part B allowed, 2024
$29,171
Medicare patients
115
Services billed
252

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

DrugClaimsCost to plans & patients
XifaxanRifaximin27$101,886
Envarsus XrTacrolimus36$26,186
VemlidyTenofovir Alafenamide12$17,395
Mycophenolate Mofetil75$6,777
Tacrolimus70$4,435
Ursodiol42$4,020
Cyclosporine ModifiedCyclosporine, Modified16$2,862
Lactulose23$983
Bumetanide25$834
Spironolactone27$563
Mycophenolic AcidMycophenolate Sodium12$371
Azathioprine14$293
Omeprazole19$268
Prednisone32$138
Furosemide15$94

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.

CompanyPaid to this providerPart D cost of their drugs
GileadVemlidy$5,578$17,39512 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 95th percentile of 497 gastroenterology providers in Michigan.

Other gastroenterology in Ann Arbor

See the full list for Michigan

Where these figures come from

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