JOHN JAIRO REYES-CASTANO M.D.
Prescription History 1073770145
Internal Medicine - Endocrinology, Diabetes & Metabolism in Springfield, VA

NPI Status: Active since May 16, 2008

Contact Information

6501 LOISDALE CT
SPRINGFIELD, VA
ZIP 22150
Phone: (706) 922-1067
Fax: (703) 922-1041

Prescription History for Informed Healthcare Decisions

When choosing a healthcare provider, especially one who prescribes medications, having access to their prescribing history can be invaluable. This page offers detailed insights into the prescriptions JOHN JAIRO REYES-CASTANO M.D. has written for Medicare beneficiaries in the past, empowering both current and prospective patients to make informed decisions about their healthcare.

Why This Information Matters

This Medicare Part D dataset provides transparency into the provider’s prescribing patterns, helping you understand the scope and nature of their pharmaceutical care. Here’s what you can learn:

Prescribing Trends: See which medications—both generic and brand-name—this provider has most frequently prescribed.
Specialization Insights: The types of drugs prescribed can give insight into the provider’s areas of focus or specialization, whether it’s managing chronic conditions, addressing acute illnesses, or providing preventive care.
Cost Awareness: Learn about the total drug costs associated with these prescriptions, which may help you anticipate your own costs and coverage needs.
Patient-Centered Decision Making: Understanding a provider’s prescribing practices helps you align their expertise with your health goals, ensuring the care you receive is consistent with your expectations.

Alendronate Sodium

Generic Name: Alendronate Sodium
Specialty: Endocrinology
Times Prescribed: 59
Number of 30-Day Refills Prescribed: 164
What is this prescription?: A nonhormonal medication for the treatment of postmenopausal osteoporosis in women. This drug builds healthy bone, restoring some of the bone loss as a result of osteoporosis.
What is this prescription used for?: Alendronate is used to prevent and treat certain types of bone loss (osteoporosis) in adults. Osteoporosis causes bones to become thinner and break more easily. Your chance of developing osteoporosis increases as you age, after menopause, or if you are taking corticosteroid medications (such as prednisone) for a long time. This medication works by slowing bone loss. This effect helps maintain strong bones and reduce the risk of broken bones (fractures). Alendronate belongs to a class of drugs called bisphosphonates.

Calcitriol

Generic Name: Calcitriol
Specialty: Endocrinology
Times Prescribed: 14
Number of 30-Day Refills Prescribed: 38
What is this prescription?: The physiologically active form of vitamin D. It is formed primarily in the kidney by enzymatic hydroxylation of 25-hydroxycholecalciferol (CALCIFEDIOL). Its production is stimulated by low blood calcium levels and parathyroid hormone. Calcitriol increases intestinal absorption of calcium and phosphorus, and in concert with parathyroid hormone increases bone resorption.
What is this prescription used for?: Calcitriol is a man-made active form of vitamin D. Most people get enough vitamin D from exposure to the sun and from fortified food products (such as dairy products, vitamins). Vitamin D helps control parathyroid hormone and the levels of certain minerals (such as calcium, phosphorus) that are needed for building and keeping strong bones. Before regular vitamin D can be used by the body, it needs to be changed to the active form by the liver and kidneys. Calcitriol is used in patients with kidney disease who can't make enough of the active form of Vitamin D. This medication is also used to prevent and treat certain types of calcium/phosphorus/parathyroid problems that can happen with long-term kidney dialysis or hypoparathyroidism. Calcitriol is usually used along with specific diet recommendations and sometimes other medications.

Cinacalcet Hcl

Generic Name: Cinacalcet Hcl
Specialty: Endocrinology
Times Prescribed: 13
Number of 30-Day Refills Prescribed: 19
What is this prescription used for?: Cinacalcet is used to treat increased amounts of a certain hormone (parathyroid) in people with long-term kidney disease who are on dialysis. It is also used to treat increased amounts of calcium in people with an overactive parathyroid gland or in people with cancer of the parathyroid gland. Cinacalcet works by decreasing the amount of parathyroid hormone, calcium, and phosphorus in your body. Having the right amount of these substances in your body helps to prevent bone disease.

Forteo

Generic Name: Teriparatide
Specialty: Endocrinology
Times Prescribed: 14
Number of 30-Day Refills Prescribed: 17.8
What is this prescription?: A polypeptide that consists of the 1-34 amino-acid fragment of human PARATHYROID HORMONE, the biologically active N-terminal region. The acetate form is given by intravenous infusion in the differential diagnosis of HYPOPARATHYROIDISM and PSEUDOHYPOPARATHYROIDISM. (Reynolds JEF(Ed): Martindale: The Extra Pharmacopoeia (electronic version). Micromedex, Inc, Englewood, CO, 1995)
What is this prescription used for?: Teriparatide is used to treat bone loss (osteoporosis) in people who have a high risk of getting fractures. It is similar to a natural hormone in your body (parathyroid hormone). It works by increasing bone mass and strength. This effect helps to decrease the risk of getting a fracture. This medication is not recommended for use in children or young adults whose bones are still growing.

Glipizide

Generic Name: Glipizide
Specialty: Endocrinology
Times Prescribed: 22
Number of 30-Day Refills Prescribed: 66
What is this prescription?: An oral hypoglycemic agent which is rapidly absorbed and completely metabolized.
What is this prescription used for?: Glipizide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes. It may also be used with other diabetes medications. Controlling high blood sugar helps prevent kidney damage, blindness, nerve problems, loss of limbs, and sexual function problems. Proper control of diabetes may also lessen your risk of a heart attack or stroke. Glipizide belongs to the class of drugs known as sulfonylureas. It lowers blood sugar by causing the release of your body's natural insulin.

Humalog

Generic Name: Insulin Lispro
Specialty: Endocrinology
Times Prescribed: 22
Number of 30-Day Refills Prescribed: 49.8
What is this prescription?: Insulin that has been modified so that the B-chain contains a LYSINE at position 28 instead of a PROLINE and a PROLINE at position 29 instead of a LYSINE. It is used to manage BLOOD GLUCOSE levels in patients with TYPE 2 DIABETES.
What is this prescription used for?: Insulin lispro is used with a proper diet and exercise program to control high blood sugar in people with diabetes. Controlling high blood sugar helps prevent kidney damage, blindness, nerve problems, loss of limbs, and sexual function problems. Proper control of diabetes may also lessen your risk of a heart attack or stroke. Insulin lispro is a man-made product that is similar to human insulin. It replaces the insulin that your body would normally make. Insulin lispro starts working faster and lasts for a shorter time than regular insulin. It works by helping blood sugar (glucose) get into cells so your body can use it for energy. This medication is usually used with a medium- or long-acting insulin product. Insulin lispro may also be used with other oral diabetes medications (such as sulfonylureas like glyburide or glipizide).

Humalog Kwikpen U-100

Generic Name: Insulin Lispro
Specialty: Endocrinology
Times Prescribed: 26
Number of 30-Day Refills Prescribed: 64.4
What is this prescription?: Insulin that has been modified so that the B-chain contains a LYSINE at position 28 instead of a PROLINE and a PROLINE at position 29 instead of a LYSINE. It is used to manage BLOOD GLUCOSE levels in patients with TYPE 2 DIABETES.
What is this prescription used for?: Insulin lispro is used with a proper diet and exercise program to control high blood sugar in people with diabetes. Controlling high blood sugar helps prevent kidney damage, blindness, nerve problems, loss of limbs, and sexual function problems. Proper control of diabetes may also lessen your risk of a heart attack or stroke. Insulin lispro is a man-made product that is similar to human insulin. It replaces the insulin that your body would normally make. Insulin lispro starts working faster and lasts for a shorter time than regular insulin. It works by helping blood sugar (glucose) get into cells so your body can use it for energy. This medication is usually used with a medium- or long-acting insulin product. Insulin lispro may also be used with other oral diabetes medications (such as sulfonylureas like glyburide or glipizide).

Humulin 70/30 Kwikpen

Generic Name: Insulin Nph Hum/Reg Insulin Hm
Specialty: Endocrinology
Times Prescribed: 13
Number of 30-Day Refills Prescribed: 37.3

Humulin N

Generic Name: Insulin Nph Human Isophane
Specialty: Endocrinology
Times Prescribed: 24
Number of 30-Day Refills Prescribed: 71.4

Humulin N Kwikpen

Generic Name: Insulin Nph Human Isophane
Specialty: Endocrinology
Times Prescribed: 21
Number of 30-Day Refills Prescribed: 46.6

Humulin R

Generic Name: Insulin Regular, Human
Specialty: Endocrinology
Times Prescribed: 34
Number of 30-Day Refills Prescribed: 96.2
What is this prescription used for?: Inhaled insulin powder is used with a proper diet and exercise program to control high blood sugar in people with diabetes. Controlling high blood sugar helps prevent kidney damage, blindness, nerve problems, loss of limbs, and sexual function problems. Proper control of diabetes may also lessen your risk of a heart attack or stroke. This man-made insulin product is the same as human insulin. It replaces the insulin that your body would normally make. It is a short-acting insulin. It works by helping blood sugar (glucose) get into cells so your body can use it for energy. This product is absorbed into the blood through your lungs. It starts working faster and lasts for a shorter time than regular insulin injected under the skin. It is usually used in combination with a medium- or long-acting insulin product. This medication may also be used alone or with other oral diabetes drugs (such as metformin).

Insulin Syringe

Generic Name: Syringe-Needle,insulin,0.5 Ml
Specialty: Endocrinology
Times Prescribed: 16
Number of 30-Day Refills Prescribed: 46

Jardiance

Generic Name: Empagliflozin
Specialty: Endocrinology
Times Prescribed: 37
Number of 30-Day Refills Prescribed: 93
What is this prescription used for?: Empagliflozin is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes. Controlling high blood sugar helps prevent kidney damage, blindness, nerve problems, loss of limbs, and sexual function problems. Empagliflozin is also used in patients with type 2 diabetes and heart disease to lower the risk of death from heart attack or stroke. Empagliflozin works by increasing the removal of sugar by your kidneys. Empagliflozin is also used to treat heart failure. It may help you live longer and lower your risk of going to the hospital for heart failure. Empagliflozin works by increasing the removal of sodium by your kidneys.

Lantus

Generic Name: Insulin Glargine,hum.Rec.Anlog
Specialty: Endocrinology
Times Prescribed: 22
Number of 30-Day Refills Prescribed: 65.4
What is this prescription?: A recombinant LONG ACTING INSULIN and HYPOGLYCEMIC AGENT that is used to manage BLOOD GLUCOSE in patients with DIABETES MELLITUS.
What is this prescription used for?: Insulin glargine is used with a proper diet and exercise program to control high blood sugar in people with diabetes. Controlling high blood sugar helps prevent kidney damage, blindness, nerve problems, loss of limbs, and sexual function problems. Proper control of diabetes may also lessen your risk of a heart attack or stroke. Insulin glargine is a man-made product that is similar to human insulin. It replaces the insulin that your body would normally make. It acts longer than regular insulin, providing a low, steady level of insulin. It works by helping blood sugar (glucose) get into cells so your body can use it for energy. Insulin glargine may be used with a shorter-acting insulin product. It may also be used alone or with other diabetes drugs. This monograph is about the following insulin glargine products: insulin glargine, insulin glargine-yfgn.

Lantus Solostar

Generic Name: Insulin Glargine,hum.Rec.Anlog
Specialty: Endocrinology
Times Prescribed: 16
Number of 30-Day Refills Prescribed: 49.1
What is this prescription?: A recombinant LONG ACTING INSULIN and HYPOGLYCEMIC AGENT that is used to manage BLOOD GLUCOSE in patients with DIABETES MELLITUS.
What is this prescription used for?: Insulin glargine is used with a proper diet and exercise program to control high blood sugar in people with diabetes. Controlling high blood sugar helps prevent kidney damage, blindness, nerve problems, loss of limbs, and sexual function problems. Proper control of diabetes may also lessen your risk of a heart attack or stroke. Insulin glargine is a man-made product that is similar to human insulin. It replaces the insulin that your body would normally make. It acts longer than regular insulin, providing a low, steady level of insulin. It works by helping blood sugar (glucose) get into cells so your body can use it for energy. Insulin glargine may be used with a shorter-acting insulin product. It may also be used alone or with other diabetes drugs. This monograph is about the following insulin glargine products: insulin glargine, insulin glargine-yfgn.

Levothyroxine Sodium

Generic Name: Levothyroxine Sodium
Specialty: Endocrinology
Times Prescribed: 156
Number of 30-Day Refills Prescribed: 463
What is this prescription?: The major hormone derived from the thyroid gland. Thyroxine is synthesized via the iodination of tyrosines (MONOIODOTYROSINE) and the coupling of iodotyrosines (DIIODOTYROSINE) in the THYROGLOBULIN. Thyroxine is released from thyroglobulin by proteolysis and secreted into the blood. Thyroxine is peripherally deiodinated to form TRIIODOTHYRONINE which exerts a broad spectrum of stimulatory effects on cell metabolism.
What is this prescription used for?: Levothyroxine is used to treat an underactive thyroid (hypothyroidism). It replaces or provides more thyroid hormone, which is normally produced by the thyroid gland. Low thyroid hormone levels can occur naturally or when the thyroid gland is injured by radiation/medications or removed by surgery. Having enough thyroid hormone is important for maintaining normal mental and physical activity. In children, having enough thyroid hormone is important for normal mental and physical development. This medication is also used to treat other types of thyroid disorders (such as thyroid cancer). This medication should not be used to treat infertility unless it is caused by low thyroid hormone levels.

Metformin Hcl

Generic Name: Metformin Hcl
Specialty: Endocrinology
Times Prescribed: 16
Number of 30-Day Refills Prescribed: 48
What is this prescription?: A biguanide hypoglycemic agent used in the treatment of non-insulin-dependent diabetes mellitus not responding to dietary modification. Metformin improves glycemic control by improving insulin sensitivity and decreasing intestinal absorption of glucose. (From Martindale, The Extra Pharmacopoeia, 30th ed, p289)
What is this prescription used for?: Metformin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar. It is used in patients with type 2 diabetes. Controlling high blood sugar helps prevent kidney damage, blindness, nerve problems, loss of limbs, and sexual function problems. Proper control of diabetes may also lessen your risk of a heart attack or stroke. Metformin works by helping to restore your body's proper response to the insulin you naturally produce. It also decreases the amount of sugar that your liver makes and that your stomach/intestines absorb.

Metformin Hcl Er

Generic Name: Metformin Hcl
Specialty: Endocrinology
Times Prescribed: 29
Number of 30-Day Refills Prescribed: 87
What is this prescription?: A biguanide hypoglycemic agent used in the treatment of non-insulin-dependent diabetes mellitus not responding to dietary modification. Metformin improves glycemic control by improving insulin sensitivity and decreasing intestinal absorption of glucose. (From Martindale, The Extra Pharmacopoeia, 30th ed, p289)
What is this prescription used for?: Metformin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar. It is used in patients with type 2 diabetes. Controlling high blood sugar helps prevent kidney damage, blindness, nerve problems, loss of limbs, and sexual function problems. Proper control of diabetes may also lessen your risk of a heart attack or stroke. Metformin works by helping to restore your body's proper response to the insulin you naturally produce. It also decreases the amount of sugar that your liver makes and that your stomach/intestines absorb.

Methimazole

Generic Name: Methimazole
Specialty: Endocrinology
Times Prescribed: 106
Number of 30-Day Refills Prescribed: 310.6
What is this prescription?: A thioureylene antithyroid agent that inhibits the formation of thyroid hormones by interfering with the incorporation of iodine into tyrosyl residues of thyroglobulin. This is done by interfering with the oxidation of iodide ion and iodotyrosyl groups through inhibition of the peroxidase enzyme.
What is this prescription used for?: Methimazole is used to treat overactive thyroid (hyperthyroidism). It works by stopping the thyroid gland from making too much thyroid hormone.

Prednisone

Generic Name: Prednisone
Specialty: Endocrinology
Times Prescribed: 13
Number of 30-Day Refills Prescribed: 35
What is this prescription?: A synthetic anti-inflammatory glucocorticoid derived from CORTISONE. It is biologically inert and converted to PREDNISOLONE in the liver.
What is this prescription used for?: Prednisone is used to treat conditions such as arthritis, blood disorders, breathing problems, severe allergies, skin diseases, cancer, eye problems, and immune system disorders. Prednisone belongs to a class of drugs known as corticosteroids. It decreases your immune system's response to various diseases to reduce symptoms such as swelling and allergic-type reactions.

Spironolactone

Generic Name: Spironolactone
Specialty: Endocrinology
Times Prescribed: 12
Number of 30-Day Refills Prescribed: 36
What is this prescription?: A potassium sparing diuretic that acts by antagonism of aldosterone in the distal renal tubules. It is used mainly in the treatment of refractory edema in patients with congestive heart failure, nephrotic syndrome, or hepatic cirrhosis. Its effects on the endocrine system are utilized in the treatments of hirsutism and acne but they can lead to adverse effects. (From Martindale, The Extra Pharmacopoeia, 30th ed, p827)
What is this prescription used for?: Spironolactone is used to treat high blood pressure and heart failure. Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. It is also used to treat swelling (edema) caused by certain conditions (such as heart failure, liver disease) by removing excess fluid and improving symptoms such as breathing problems. This medication is also used to treat conditions in which the body is making too much of a natural substance (aldosterone). Spironolactone is known as a water pill (potassium-sparing diuretic).

Testosterone

Generic Name: Testosterone
Specialty: Endocrinology
Times Prescribed: 23
Number of 30-Day Refills Prescribed: 27
What is this prescription?: A potent androgenic steroid and major product secreted by the LEYDIG CELLS of the TESTIS. Its production is stimulated by LUTEINIZING HORMONE from the PITUITARY GLAND. In turn, testosterone exerts feedback control of the pituitary LH and FSH secretion. Depending on the tissues, testosterone can be further converted to DIHYDROTESTOSTERONE or ESTRADIOL.
What is this prescription used for?: This medicated patch contains testosterone. It is used for hormone replacement in men who are not able to produce enough testosterone (for example, due to hypogonadism). This medication is absorbed through the skin, enters your bloodstream, and helps your body reach normal testosterone levels. Testosterone helps the body to develop and maintain the male sexual characteristics (masculinity), such as a deep voice and body hair. It also helps to maintain muscle and prevent bone loss, and is necessary for natural sexual ability/desire. This drug should not be used by women.

Ultra-Fine Short Pen Needle

Generic Name: Pen Needle, Diabetic
Specialty: Endocrinology
Times Prescribed: 39
Number of 30-Day Refills Prescribed: 81

Victoza 2-Pak

Generic Name: Liraglutide
Specialty: Endocrinology
Times Prescribed: 11
Number of 30-Day Refills Prescribed: 22.5
What is this prescription?: An analog of GLUCAGON-LIKE PEPTIDE 1 and agonist of the GLUCAGON-LIKE PEPTIDE 1 RECEPTOR that is used as a HYPOGLYCEMIC AGENT and supplemental therapy in the treatment of DIABETES MELLITUS by patients who do not respond to METFORMIN.
What is this prescription used for?: This medication is used with a doctor-approved exercise, behavior change, and reduced-calorie diet program to help you lose weight. It is used by certain overweight people, such as those who are obese or have weight-related medical problems. Losing weight and keeping it off can lessen the many health risks that come with obesity, including heart disease, diabetes, high blood pressure, and a shorter life. Liraglutide is similar to a natural hormone in your body (incretin). It works by controlling your appetite.

Victoza 3-Pak

Generic Name: Liraglutide
Specialty: Endocrinology
Times Prescribed: 13
Number of 30-Day Refills Prescribed: 16.5
What is this prescription?: An analog of GLUCAGON-LIKE PEPTIDE 1 and agonist of the GLUCAGON-LIKE PEPTIDE 1 RECEPTOR that is used as a HYPOGLYCEMIC AGENT and supplemental therapy in the treatment of DIABETES MELLITUS by patients who do not respond to METFORMIN.
What is this prescription used for?: This medication is used with a doctor-approved exercise, behavior change, and reduced-calorie diet program to help you lose weight. It is used by certain overweight people, such as those who are obese or have weight-related medical problems. Losing weight and keeping it off can lessen the many health risks that come with obesity, including heart disease, diabetes, high blood pressure, and a shorter life. Liraglutide is similar to a natural hormone in your body (incretin). It works by controlling your appetite.

This dataset provides information about prescriptions written for Medicare beneficiaries in the year 2022. It does not include prescriptions for patients with private insurance, Medicaid, or other coverage types. However, this information remains valuable for all patients, as it may reflect the provider's overall prescribing preferences and approach to pharmaceutical care. This can help you make better-informed decisions when considering or continuing care with this provider.