RxDoctor Payments Data

Gary Gilkeson, MD

Rheumatology · Charleston, SCNPI 1487762423

Payments from drug & device makers

What this record shows

This record is dominated by consulting fees: $15,870 of the $16,134 with a category attached, or 98.4%. Pfizer accounts for 85.5% of it on its own, with 5 other manufacturers making up the rest. Reporting peaked in 2024 at $4,940 and has fallen 97.5% since, to $124 in 2025.

$16,134in general payments, 2019–2025

Across 9 payments — averaging $1792.64 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

  • Pfizer$14K
  • GSK$2K
  • Sanofi$109
  • AstraZeneca$91
  • Amgen$49
  • UCB, Inc.$15
$50,977in research payments, 2019–2025

Across 20 payments — averaging $2548.85 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.

  • GSK$36K
  • Bristol Myers Squibb$15K

What the payments were for

  • Consulting fees$15,87098%
  • Food & beverage$2642%

General payments by program year

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
Pfizer3$13,800
GSK2$2,070
Sanofi1$109
AstraZeneca1$91
Amgen1$49
UCB, Inc.1$15

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

$16,134 in reported general payments places this provider in the 75th percentile of 123 rheumatology providers in South Carolina.

See all rheumatology providers in South Carolina

Medicare billing

Part B allowed, 2024
$17,756
Medicare patients
90
Services billed
332

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
Humira(Cf) PenAdalimumab32$319,548
EnbrelEtanercept35$213,952
XeljanzTofacitinib Citrate26$106,501
Hydroxychloroquine Sulfate128$5,577
Mycophenolic AcidMycophenolate Sodium22$3,788
Mycophenolate Mofetil19$1,638
Colchicine13$1,485
Oxycodone Hcl37$1,146
Leflunomide18$991
Hydromorphone Hcl12$596
Prednisone103$489
Diclofenac Sodium28$445
Gabapentin18$275
Zolpidem Tartrate24$242
Cyclobenzaprine Hcl28$240

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
AmgenEnbrel$49$213,95235 claims
PfizerXeljanz$13,800$106,50126 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 75th percentile of 123 rheumatology providers in South Carolina.

Other rheumatology in Charleston

See the full list for South Carolina

Where these figures come from

Is this you, or does something look wrong? →