Journalism in the Public Interest


Prescriber Checkup

Prescriber Checkup » DILTIAZEM ER


Diltiazem is used to treat high blood pressure and to control angina (chest pain). Diltiazem is in a class of medications called calcium-channel blockers. It works by relaxing the blood vessels so the heart does not have to pump as hard. It also increases the supply of blood and oxygen to the heart. More info »


Medicare Part D Claims
Retail Cost

Cost by state

State Claims Cost
California 206,376 $12.2M
Florida 120,583 $4.74M
Texas 93,943 $4.12M
North Carolina 77,120 $3.25M
Tennessee 76,771 $2.87M
New York 72,324 $3.61M
Pennsylvania 67,811 $3.09M
Illinois 61,851 $2.57M
Missouri 60,210 $2.36M
Georgia 59,083 $2.49M
Ohio 52,843 $2.66M
Washington 51,663 $2.25M
Kentucky 50,830 $2.05M
Wisconsin 50,023 $2.06M
Minnesota 44,314 $1.97M
Arkansas 42,731 $1.52M
Iowa 41,942 $1.56M
Arizona 40,811 $1.76M
Alabama 40,301 $1.58M
Virginia 36,666 $1.82M
Indiana 35,494 $1.55M
Louisiana 35,115 $1.4M
Oregon 32,535 $1.55M
South Carolina 32,295 $1.43M
Mississippi 30,442 $1.16M
Massachusetts 30,197 $1.38M
Oklahoma 28,945 $1.25M
Michigan 28,481 $1.5M
Kansas 27,657 $1.07M
Colorado 27,301 $1.29M
Nebraska 19,072 $662K
Puerto Rico 18,737 $566K
New Jersey 18,318 $1.01M
Maryland 14,316 $840K
New Mexico 14,065 $572K
Maine 13,444 $712K
Nevada 13,325 $524K
Connecticut 11,938 $578K
Idaho 11,446 $459K
West Virginia 10,376 $488K
North Dakota 9,891 $386K
South Dakota 9,538 $358K
Utah 8,170 $340K
Montana 7,878 $305K
Rhode Island 7,567 $300K
Hawaii 7,526 $363K
New Hampshire 6,517 $329K
Vermont 6,019 $297K
Delaware 3,470 $209K
Wyoming 2,795 $118K
Alaska 2,424 $86.1K
District of Columbia 1,950 $100K
About This Data

ProPublica obtained prescribing data from Medicare’s prescription drug benefit, known as Part D, under the Freedom of Information Act. The data for 2011 includes nearly 1.2 billion prescriptions written by 1.6 million doctors, nurses and other providers. This database lists about 364,000 of those providers who wrote 50 or more prescriptions for at least one drug that year. About three-fourths went to patients 65 and older; the rest were for disabled patients. Methodology »

Incorrect Info?

If you are a provider and you believe your address is incorrect, check the listing you created on the National Provider Identifier registry. If you change your listing, send a note to and we will update your information. If you have other questions about this data, send a note to

Top prescribers for DILTIAZEM ER

Provider Medicare Claims City State