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Prescriber Checkup

RAYMOND GRENFELL, JR. M.D.

At A Glance: This Prescriber in 2011

Endocrinology, Diabetes Metabolism

Self-Reported Primary Specialty

See Other Prescribers With This Specialty in This State »

6,669Medicare Part D Prescriptions Filled, Including Refills

Rank: 4 out of 23

$553K Total Retail Price of All Prescriptions

Rank: 6 out of 23

549 Patients Receiving at Least One Drug in Part D
75%Patients 65 Years and Older
16% Subsidized Claims for Low-Income Patients

How Does This Prescriber Compare to Peers?

In the same specialty and state. Caveats »

Drugs That Present Special Risks
Costs of Prescribing
Average for
this specialty
in Mississippi

Narcotics

N/A

Antipsychotics to Seniors

N/A

Risky Drugs to Seniors

1% of this provider’s 5,446 prescriptions for patients 65 and older were for "potentially dangerous" drugs, compared to an average of 1%.

Brand Name Drugs

54% of this provider’s prescriptions were for brand-name drugs, compared to an average of 44%.

Prescription Price

$83 was the average price of a prescription from this provider, compared to $89 among peers.

Prescriptions per Patient

12 is the average number of prescriptions (including refills) per patient, compared to an average of 12.


Another View

This chart shows a different comparison of all providers in this specialty based on their mix of drugs and volume. Providers are grouped by similarity; those least like their peers are farthest to the right. Hover over the bars to see names of other prescribers.

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This Prescriber's Drugs

The table below list this provider’s drugs, the number of prescriptions and how many went to seniors. Drugs are ranked by volume and compared with the rank for all providers in the same specialty and state.

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A

An antipsychotic drug. More » Antipsychotics are frequently given to dementia patients, though it increases their risk of death.

R

A risky drug for seniors. More » The American Geriatrics Society has said this drug is "potentially dangerous" for seniors and might be inappropriate.

N

A narcotic drug. More » Misuse and abuse of narcotics led to some 16,000 overdose deaths in 2010.

10

This provider is among the top 10 prescribers of
this drug in the country.

This provider’s prescriptions for this drug were for more days than those of peers. More » Because of this, his or her prescription count may be lower.

This provider’s prescriptions for this drug were for fewer days than those of peers. More » Because of this, his or her prescription count may be higher.

This Drug's Rank
Drug Name Total Prescriptions Filled
Including Refills
Prescriptions
to 65+
Category For this Prescriber For All Prescribers in
This Specialty in Mississippi
SYNTHROID

Treats hypothyroidism. +

Treats hypothyroidism. More info »

1,139 871 1 1
CRESTOR

Lowers high levels of chole... +

Lowers high levels of cholesterol and triglycerides (fats) in your blood. Helps keep atherosclerosis (hardening of the arteries) from getting worse. Lowers the risk of stroke and heart attack in people who have certain risk factors. This medicine is an HMG-CoA inhibitor, also called a statin. More info »

273 237 2 9
PRAVASTATIN SODIUM

Pravastatin is used with di... +

Pravastatin is used with diet, weight-loss, and exercise to reduce the risk of heart attack and stroke and to decrease the chance that heart surgery will be needed in people who have heart disease or who are at risk of developing heart disease. Pravastatin is also used to reduce the amount of cholesterol (a fat-like substance) and other fatty substances in the blood. Pravastatin is in a class of medications called HMG-CoA reductase inhibitors (statins). It works by slowing the production of cholesterol in the body to decrease the amount of cholesterol that may build up on the walls of the arteries and block blood flow to the heart, brain, and other parts of the body. More info »

268 217 3 10
METFORMIN HCL ER

Metformin is used alone or ... +

Metformin is used alone or with other medications, including insulin, to treat type 2 diabetes (condition in which the body does not use insulin normally and, therefore, cannot control the amount of sugar in the blood). Metformin is in a class of drugs called biguanides. Metformin helps to control the amount of glucose (sugar) in your blood. It decreases the amount of glucose you absorb from your food and the amount of glucose made by your liver. Metformin also increases your body's response to insulin, a natural substance that controls the amount of glucose in the blood. Metformin is not used to treat type 1 diabetes (condition in which the body does not produce insulin and therefore cannot control the amount of sugar in the blood). More info »

232 208 4 13
INSULIN SYRINGE 189 148 5 14
LEVOXYL

Treats hypothyroidism. Also... +

Treats hypothyroidism. Also treats an enlarged thyroid gland (goiter) and thyroid cancer. More info »

187 142 6 8
GLIMEPIRIDE

Treats type 2 diabetes. Use... +

Treats type 2 diabetes. Used together with a proper diet and exercise to help control high blood sugar. This medicine is a sulfonylurea. More info »

185 148 7 3
HUMULIN N

Treats diabetes mellitus. +

Treats diabetes mellitus. More info »

154 154 8 24
LANTUS

Treats diabetes mellitus. I... +

Treats diabetes mellitus. Insulin is a hormone that helps get sugar from the blood to the muscles, where it is used for energy. This type of insulin usually works longer than regular insulin. More info »

146 122 9 7
TRIAMTERENE-HCTZ

The combination of triamter... +

The combination of triamterene and hydrochlorothiazide is used to treat high blood pressure and edema (fluid retention; excess fluid held in body tissues) in patients who have lower amounts of potassium in their bodies or for whom low potassium levels in the body could be dangerous. The combination of triamterene and hydrochlorothiazide is in a class of medications called diuretics ('water pills'). It causes the kidneys to get rid of unneeded water and sodium from the body into the urine, but reduces the loss of potassium. More info »

144 124 10 58
NOVOLOG

Treats diabetes mellitus. I... +

Treats diabetes mellitus. Insulin is a hormone that helps get sugar from the blood to the muscles, where it is used for energy. This type of insulin is similar to regular insulin, but acts in the body more quickly. More info »

142 106 11 6
HUMALOG

Treats diabetes mellitus. I... +

Treats diabetes mellitus. Insulin is a hormone that helps get sugar from the blood to the muscles, where it is used for energy. This type of insulin starts working faster than regular insulin. More info »

140 121 12 15
LIPITOR

Lowers high cholesterol and... +

Lowers high cholesterol and triglyceride levels in the blood. Lowers the risk of chest pain, stroke, heart attack, or certain heart and blood vessel problems in people who have certain risk factors. This medicine is an HMG-CoA inhibitor, also called a statin. More info »

140 115 12 20
ZETIA

Lowers cholesterol in your ... +

Lowers cholesterol in your blood. May be used in combination with another cholesterol-lowering medicine called a "statin." More info »

135 119 14 35
RAMIPRIL

Treats high blood pressure ... +

Treats high blood pressure and heart failure after a heart attack. Reduces risk of heart attack, stroke, and death in people 55 years and older who have heart disease. This medicine is an ACE (angiotensin-converting enzyme) inhibitor. More info »

128 111 15 52
SIMVASTATIN

Treats high cholesterol and... +

Treats high cholesterol and triglyceride levels in the blood. Lowers risk of heart attack, stroke, and certain blood vessel problems in people with certain risk factors. This medicine is an HMG-CoA reductase inhibitor, also called a statin. More info »

124 119 16 4
AMLODIPINE BESYLATE

Amlodipine is used alone or... +

Amlodipine is used alone or in combination with other medications to treat high blood pressure and chest pain (angina). Amlodipine is in a class of medications called calcium channel blockers. It lowers blood pressure by relaxing the blood vessels so the heart does not have to pump as hard. It controls chest pain by increasing the supply of blood to the heart. If taken regularly, amlodipine controls chest pain, but it does not stop chest pain once it starts. Your doctor may prescribe a different medication to take when you have chest pain. More info »

121 94 17 12
LEVOTHYROXINE SODIUM

Levothyroxine, a thyroid ho... +

Levothyroxine, a thyroid hormone, is used to treat hypothyroidism, a condition where the thyroid gland does not produce enough thyroid hormone. Without this hormone, the body cannot function properly, resulting in: poor growth; slow speech; lack of energy; weight gain; hair loss; dry, thick skin; and increased sensitivity to cold. When taken correctly, levothyroxine reverses these symptoms. Levothyroxine is also used to treat congenital hypothyroidism (cretinism) and goiter (enlarged thyroid gland). More info »

121 103 17 2
INDAPAMIDE

Treats high blood pressure ... +

Treats high blood pressure and fluid retention (edema). This medicine is a diuretic (water pill). More info »

107 101 19 66
ENALAPRIL MALEATE

Enalapril is used alone or ... +

Enalapril is used alone or in combination with other medications to treat high blood pressure. It is also used in combination with other medications to treat heart failure. Enalapril is in a class of medications called angiotensin-converting enzyme (ACE) inhibitors. It works by decreasing certain chemicals that tighten the blood vessels, so blood flows more smoothly and the heart can pump blood more efficiently. More info »

106 97 20 67
NOVOLIN N

Treats diabetes mellitus. +

Treats diabetes mellitus. More info »

103 91 21 45
LOSARTAN POTASSIUM

Losartan is used alone or i... +

Losartan is used alone or in combination with other medications to treat high blood pressure. Losartan is also used to decrease the risk of stroke in people who have high blood pressure and a heart condition called left ventricular hypertrophy (enlargement of the walls of the left side of the heart). Losartan may not decrease the risk of stroke in African Americans who have these conditions. This medication is also used to treat kidney disease in people who have type 2 diabetes (condition in which the body does not use insulin normally and therefore cannot control the amount of sugar in the blood) and high blood pressure. Losartan is in a class of medications called angiotensin II receptor antagonists. It works by blocking the action of certain natural substances that tighten the blood vessels, allowing the blood to flow more smoothly and the heart to pump more efficiently. More info »

94 80 22 28
HUMULIN 70-30

Insulin injection is used t... +

Insulin injection is used to control blood sugar in people who have type 1 diabetes (condition in which the body does not make insulin and therefore cannot control the amount of sugar in the blood) or in people who have type 2 diabetes (condition in which the blood sugar is too high because the body does not produce or use insulin normally) that cannot be controlled with oral medications alone. Insulin injection is in a class of medications called hormones. Insulin injection is used to take the place of insulin that is normally produced by the body. It works by helping move sugar from the blood into other body tissues where it is used for energy. It also stops the liver from producing more sugar. All of the types of insulin that are available work in this way. The types of insulin differ only in how quickly they begin to work and how long they continue to control blood sugar. More info »

91 84 23 38
PEN NEEDLE 84 72 24 18
METFORMIN HCL

Metformin is used alone or ... +

Metformin is used alone or with other medications, including insulin, to treat type 2 diabetes (condition in which the body does not use insulin normally and, therefore, cannot control the amount of sugar in the blood). Metformin is in a class of drugs called biguanides. Metformin helps to control the amount of glucose (sugar) in your blood. It decreases the amount of glucose you absorb from your food and the amount of glucose made by your liver. Metformin also increases your body's response to insulin, a natural substance that controls the amount of glucose in the blood. Metformin is not used to treat type 1 diabetes (condition in which the body does not produce insulin and therefore cannot control the amount of sugar in the blood). More info »

84 69 24 5
HUMULIN R

Treats diabetes mellitus. +

Treats diabetes mellitus. More info »

78 49 26 44
NIASPAN

Lowers cholesterol and trig... +

Lowers cholesterol and triglyceride levels in the blood and treats niacin deficiency (pellagra). Also reduces heart attack risk and narrowing of the arteries in people who have heart disease. This medicine is a vitamin (B3). More info »

71 55 27 75
METOPROLOL SUCCINATE

Metoprolol is used alone or... +

Metoprolol is used alone or in combination with other medications to treat high blood pressure. It also is used to prevent angina (chest pain) and to improve survival after a heart attack. Extended-release (long-acting) metoprolol also is used in combination with other medications to treat heart failure. Metoprolol is in a class of medications called beta blockers. It works by relaxing blood vessels and slowing heart rate to improve blood flow and decrease blood pressure More info »

64 63 28 36
LISINOPRIL

Treats high blood pressure ... +

Treats high blood pressure and heart failure. A lower blood pressure will reduce the risk of stroke and heart attack. Also used in the first few days after a heart attack to help reduce the risk of death. This medicine is an angiotensin-converting enzyme (ACE) inhibitor. More info »

61 41 29 11
POTASSIUM CHLORIDE

Potassium is needed to main... +

Potassium is needed to maintain good health. More info »

52 40 30 40
DIOVAN

Treats high blood pressure ... +

Treats high blood pressure and heart failure. A lower blood pressure can reduce the risk of stroke and heart attack. May also prolong life after a heart attack. This medicine is an angiotensin receptor blocker (ARB). More info »

52 50 30 47
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 »

Caveats
  • No comparisons are shown if 10 or fewer prescribers in the state share this specialty.
  • The list of top drugs includes only those for which this provider wrote 50 or more prescriptions, but all prescriptions are counted in the summary totals at the top.
  • The calculation of “Risky Drugs to Seniors” does not include drugs for which a provider wrote 11 or fewer prescriptions because Medicare redacted the information to protect patient privacy.
  • Comparisons do not take into account the medical conditions of patients. Medications for certain conditions do not have generic alternatives, so patients would receive more expensive brand name drugs.
  • This provider's address and specialty information was last updated on July 8, 2007.
  • Comparisons are based on each provider’s current address, not necessarily where he or she worked during the time period covered in this database.
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 drugs@propublica.org and we will update your information. If you have other questions about this data, send a note to drugs@propublica.org.