Amifampridine Phosphate
Brand name: Firdapse
Rank #239 of 500 drugs by total cost
Data: CMS Medicare Part D, 2023 (most current available) · Updated March 2026
$54.4M
Total Cost
1,203
Total Claims
$54.4M
Total Cost
72
Prescribers
$45K
Cost per Claim
0
Beneficiaries
1,214
30-Day Fills
$755K
Avg Cost/Provider
17
Avg Claims/Provider
Share of Medicare Part D Spending
0.02%
of total Medicare Part D spending
$54.4M of $275.65B
Top Prescribers by Cost
Top 10 prescribers of $54.4M total
🔎 Data Overview
At $45,193 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 $755,103 per prescriber suggests this drug may be concentrated among specialists. High per-provider spending can sometimes indicate inappropriate prescribing or overly aggressive use.
Insights generated from CMS data analysis. Statistical patterns are not accusations — always consider clinical context.
Top Prescribers of Amifampridine Phosphate
| # | Provider | Specialty | Location | Claims | Cost |
|---|---|---|---|---|---|
| 1 | Vern Juel | Neurology | Durham, NC | 53 | $2.3M |
| 2 | Nizar Chahin | Neurology | Portland, OR | 35 | $2.1M |
| 3 | Margherita Milone | Neurology | Rochester, MN | 30 | $1.6M |
| 4 | Kerry Levin | Neurology | Cleveland, OH | 24 | $1.3M |
| 5 | Carlayne Jackson | Neurology | San Antonio, TX | 27 | $1.3M |
| 6 | Kelly Gwathmey | Neurology | Henrico, VA | 25 | $1.3M |
| 7 | Ericka Wong | Neurology | Philadelphia, PA | 24 | $1.3M |
| 8 | Milvia Pleitez | Neurology | Houston, TX | 22 | $1.2M |
| 9 | Cynthia Gibson | Nurse Practitioner | Rochester, NY | 23 | $1.2M |
| 10 | Samir Macwan | Neurology | Rancho Mirage, CA | 30 | $1.2M |
| 11 | Amanda Peltier | Neurology | Nashville, TN | 21 | $1.1M |
| 12 | Melanie Taylor | Neurology | Grand Rapids, MI | 32 | $1.1M |
| 13 | David Johnson | Neurology | Saint Paul, MN | 26 | $1.1M |
| 14 | Xiaosong Zhao | Neurology | Dublin, OH | 25 | $1.1M |
| 15 | Ikjae Lee | Neurology | New York, NY | 20 | $993K |
Top prescribers ranked by total cost for this drug in 2023.
Related Drugs by Cost
| # | Drug | Total Cost | Claims |
|---|---|---|---|
| 236 | Valsartan (Valsartan) | $56.4M | 1,481,937 |
| 237 | Benralizumab (Fasenra Pen) | $54.8M | 9,334 |
| 238 | Netarsudil Mesylat/Latanoprost (Rocklatan) | $54.7M | 103,171 |
| 239 | Amifampridine Phosphate (Firdapse) | $54.4M | 1,203 |
| 240 | Dapaglifloz Propaned/Metformin (Xigduo Xr) | $54.4M | 58,629 |
| 241 | Buspirone Hcl (Buspirone Hcl) | $53.7M | 2,868,147 |
| 242 | Oxybutynin Chloride (Oxybutynin Chloride Er) | $53.4M | 1,872,901 |
Related Analysis
Data from CMS Medicare Part D Prescriber-Drug Public Use File, 2023. Methodology