Interferon Beta-1a
Brand name: Avonex
Rank #163 of 500 drugs by total cost
Data: CMS Medicare Part D, 2023 (most current available) · Updated March 2026
$98.3M
Total Cost
11,314
Total Claims
$98.3M
Total Cost
652
Prescribers
$8,685
Cost per Claim
17
Beneficiaries
11,830
30-Day Fills
$151K
Avg Cost/Provider
17
Avg Claims/Provider
Share of Medicare Part D Spending
0.04%
of total Medicare Part D spending
$98.3M of $275.65B
Top Prescribers by Cost
Top 10 prescribers of $98.3M total
🔎 Data Overview
At $8,685 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 $150,716 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 $5,780,408 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 Interferon Beta-1a
| # | Provider | Specialty | Location | Claims | Cost |
|---|---|---|---|---|---|
| 1 | David Hojnacki | Neurology | Buffalo, NY | 198 | $1.6M |
| 2 | Saud Sadiq | Neurology | New York, NY | 69 | $761K |
| 3 | Clyde Markowitz | Neurology | Philadelphia, PA | 80 | $653K |
| 4 | Ravi Pande | Neurology | Greenwood, MS | 72 | $628K |
| 5 | Neil Lava | Neurology | Atlanta, GA | 70 | $585K |
| 6 | Jacob Sloane | Neurology | Boston, MA | 40 | $562K |
| 7 | Mary Rensel | Neurology | Cleveland, OH | 58 | $513K |
| 8 | Mary Ann Picone | Neurology | Teaneck, NJ | 52 | $509K |
| 9 | Douglas Schell | Certified Clinical Nurse Specialist | Kansas City, MO | 60 | $507K |
| 10 | Brian Steingo | Neurology | Boca Raton, FL | 52 | $506K |
| 11 | Anthony Esposito | Neurology | Anniston, AL | 51 | $500K |
| 12 | Barbara Bumstead | Nurse Practitioner | Bay Shore, NY | 27 | $474K |
| 13 | Pamela Clark | Nurse Practitioner | Rochester, NY | 54 | $471K |
| 14 | Jacob Sloane | Neurology | Boston, MA | 54 | $468K |
| 15 | Amy Pruitt | Neurology | Philadelphia, PA | 48 | $456K |
Top prescribers ranked by total cost for this drug in 2023.
Related Drugs by Cost
| # | Drug | Total Cost | Claims |
|---|---|---|---|
| 160 | Omalizumab (Xolair) | $98.9M | 30,451 |
| 161 | Brimonidine Tartrate (Alphagan P) | $98.8M | 988,570 |
| 162 | Dexlansoprazole (Dexlansoprazole Dr) | $98.7M | 275,116 |
| 163 | Interferon Beta-1a (Avonex) | $98.3M | 11,314 |
| 164 | Guselkumab (Tremfya) | $97.1M | 7,102 |
| 165 | Levetiracetam (Levetiracetam) | $96.1M | 1,723,736 |
| 166 | Oxycodone Myristate (Xtampza Er) | $96.1M | 141,266 |
Related Analysis
Data from CMS Medicare Part D Prescriber-Drug Public Use File, 2023. Methodology