Carbamazepine

Rank #294 of 500 drugs by total cost

Data: CMS Medicare Part D, 2023 (most current available) · Updated March 2026

$40.4M

Total Cost

389,090

Total Claims

$40.4M

Total Cost

16,351

Prescribers

$104

Cost per Claim

11,700

Beneficiaries

519,029

30-Day Fills

$2,470

Avg Cost/Provider

Avg Claims/Provider

Share of Medicare Part D Spending

0.01%

of total Medicare Part D spending

$40.4M of $275.65B

Top 10 prescribers of $40.4M total

#	Provider	Specialty	Location	Claims	Cost
1	Michael Kaplowitz	Psychiatry	Riverdale, NY	285	$96K
2	Deborah Zielinski	Nurse Practitioner	Chicago, IL	115	$69K
3	Caitlin Mcelroy-Cox	Nurse Practitioner	New York, NY	40	$58K
4	Deborah Zielinski	Nurse Practitioner	Chicago, IL	336	$54K
5	James Tao	Neurology	Chicago, IL	65	$47K
6	Melissa Carran	Neurology	Camden, NJ	183	$44K
7	Ruth Dekker	Nurse Practitioner	Pocatello, ID	206	$40K
8	Vijay Thadani	Neurology	Lebanon, NH	188	$39K
9	David Labiner	Neurology	Tucson, AZ	149	$39K
10	Nicole Lawson	Nurse Practitioner	Rochester, MN	154	$38K
11	Stephan Eisenschenk	Neurology	Gainesville, FL	20	$37K
12	Jenell Mitteness	Nurse Practitioner	Willmar, MN	186	$36K
13	Antoine Mitri	Neurology	Downey, CA	363	$36K
14	Hoover Royals	Family Practice	Dover, NC	471	$35K
15	Mubashir Khan	Neurology	Prince George, VA	168	$34K

Top prescribers ranked by total cost for this drug in 2023.

#	Drug	Total Cost	Claims
291	Atogepant (Qulipta)	$40.7M	32,955
292	Obeticholic Acid (Ocaliva)	$40.6M	4,131
293	Doxycycline Hyclate (Doxycycline Hyclate)	$40.5M	2,023,357
294	Carbamazepine (Carbamazepine)	$40.4M	389,090
295	Methylnaltrexone Bromide (Relistor)	$39.8M	16,356
296	Spironolactone (Spironolactone)	$39.4M	3,126,938
297	Varenicline Tartrate (Varenicline Tartrate)	$38.8M	87,274

The 20 drugs that cost Medicare the most.

Why some providers resist cheaper generics.

How pharmacy benefit managers drive up drug prices.

Data from CMS Medicare Part D Prescriber-Drug Public Use File, 2023. Methodology