Ofatumumab
Brand name: Kesimpta Pen
Rank #119 of 500 drugs by total cost
Data: CMS Medicare Part D, 2023 (most current available) · Updated March 2026
$144.6M
Total Cost
14,774
Total Claims
$144.6M
Total Cost
491
Prescribers
$9,788
Cost per Claim
502
Beneficiaries
15,569
30-Day Fills
$295K
Avg Cost/Provider
30
Avg Claims/Provider
Share of Medicare Part D Spending
0.05%
of total Medicare Part D spending
$144.6M of $275.65B
Top Prescribers by Cost
Top 10 prescribers of $144.6M total
🔎 Data Overview
At $9,788 per prescription, this is a high-cost medication. Expensive drugs drive Medicare spending growth and create access challenges for patients with coverage gaps.
Average cost of $294,525 per prescriber suggests this drug may be concentrated among specialists. High per-provider spending can sometimes indicate inappropriate prescribing or overly aggressive use.
Average cost of $288,071 per patient per year. Medications at this price point significantly impact patient out-of-pocket costs and Medicare spending.
Insights generated from CMS data analysis. Statistical patterns are not accusations — always consider clinical context.
Top Prescribers of Ofatumumab
| # | Provider | Specialty | Location | Claims | Cost |
|---|---|---|---|---|---|
| 1 | Sangjin Oh | Neurology | Glen Burnie, MD | 227 | $2.2M |
| 2 | Robert Pace | Neurology | Owosso, MI | 221 | $2.0M |
| 3 | Reinaldo Verson | Neurology | Columbus, GA | 204 | $1.8M |
| 4 | Joseph Guarnaccia | Neurology | Derby, CT | 185 | $1.8M |
| 5 | Esther Murray | Physician Assistant | Wilmington, NC | 172 | $1.6M |
| 6 | George Hutton | Neurology | Houston, TX | 144 | $1.6M |
| 7 | Douglas Juvinall | Neurology | Peoria, IL | 158 | $1.5M |
| 8 | Neil Lava | Neurology | Atlanta, GA | 156 | $1.5M |
| 9 | Jesus Lovera | Neurology | New Orleans, LA | 157 | $1.4M |
| 10 | Carrie Downey | Neurology | Bangor, ME | 139 | $1.4M |
| 11 | Anna Cluskey | Physician Assistant | Milwaukee, WI | 149 | $1.3M |
| 12 | Roberto Bomprezzi | Neurology | Worcester, MA | 143 | $1.2M |
| 13 | Unsong Oh | Neurology | Richmond, VA | 123 | $1.1M |
| 14 | Paula Aston | Neurology | Wausau, WI | 100 | $1.1M |
| 15 | Aram Zabeti | Neurology | Cincinnati, OH | 94 | $1.0M |
Top prescribers ranked by total cost for this drug in 2023.
Related Drugs by Cost
| # | Drug | Total Cost | Claims |
|---|---|---|---|
| 116 | Sofosbuvir/Velpatasvir (Epclusa) | $149.4M | 6,544 |
| 117 | Dolutegravir/Rilpivirine (Juluca) | $148.9M | 41,081 |
| 118 | Lisinopril (Lisinopril) | $145.8M | 15,744,768 |
| 119 | Ofatumumab (Kesimpta Pen) | $144.6M | 14,774 |
| 120 | Emtricitab/Rilpiviri/Tenof Ala (Odefsey) | $144.1M | 37,441 |
| 121 | Eltrombopag Olamine (Promacta) | $142.8M | 10,876 |
| 122 | Alpha-1-Proteinase Inhibitor (Prolastin C) | $137.9M | 12,352 |
Related Analysis
Data from CMS Medicare Part D Prescriber-Drug Public Use File, 2023. Methodology