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Muhammad Gillan, MD

Rheumatology · Oklahoma City, OKNPI 1114918869

Payments from drug & device makers

$16,162in general payments, 2019–2025

Across 926 payments — averaging $17.45 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

  • AbbVie$3K
  • Amgen$2K
  • AstraZeneca$2K
  • Johnson & Johnson$2K
  • UCB, Inc.$2K
  • E.r. Squibb & Sons, L.L.C.$1K
  • plus $5K from 21 others

What the payments were for

  • Food & beverage$15,85298%
  • Education$3102%

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

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.

How this compares

$16,162 in reported general payments places this provider in the 65th percentile of 67 rheumatology providers in Oklahoma.

See all rheumatology providers in Oklahoma

Medicare billing

Part B allowed, 2024
$1,225,046
Medicare patients
393
Services billed
55,795

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
RinvoqUpadacitinib30$201,622
Humira(Cf) PenAdalimumab19$179,827
Enbrel SureclickEtanercept24$177,287
KevzaraSarilumab14$62,628
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen526$11,097
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen95$3,061
Hydroxychloroquine Sulfate90$2,706
Tramadol Hcl199$1,964
Febuxostat12$1,882
MethotrexateMethotrexate Sodium55$1,840
Pregabalin50$1,781
Celecoxib38$1,104
Gabapentin65$1,057
Cevimeline Hcl19$1,029
Acetaminophen-CodeineAcetaminophen With Codeine44$732

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
AbbVieRinvoq$2,738$201,62230 claims
SanofiKevzara$269$62,62814 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 65th percentile of 67 rheumatology providers in Oklahoma.

Other rheumatology in Oklahoma City

See the full list for Oklahoma

Where these figures come from

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