AMAKA JENNIFER ONYIAGU M.D
Prescription History 1386263283
Internal Medicine in Las Vegas, NV

Active since April 10, 2020PECOS EnrolledAccepts Medicare Assignment
2720 N TENAYA WAY, LAS VEGAS, NV 89128(702) 877-8600 Get Directions

NPPES record last updated: November 18, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 18, 2025, May 16, 2024, Apr 10, 2020 (3 updates tracked since 2020).

Medicare Part D Prescription History

Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for AMAKA JENNIFER ONYIAGU M.D, an active Internal Medicine specialist practicing in Las Vegas, NV. Our medical registry currently tracks 17 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 299 documented patient claims. Among these therapy options, the most frequently utilized medication is Amoxicillin-Clavulanate Potass, which accounts for 27 claims alone. Use the table below to sort by claims, cost, or utilization compared with the state average; select any medication for its full profile.

17
Medications
299
Total Claims
408
30-Day Fills
Amoxicillin-Clavulanate Potass
Most Prescribed · 27 claims
View details
17 medications · 2024 Medicare Part D
Medicare Part D medications prescribed by AMAKA JENNIFER ONYIAGU M.D in 2024, with prescription volumes, average cost per fill, and NV state comparisons
Medication Prescriptions (2024)Rx (2024) Avg Cost per FillCost / Fill Vs. Other NV PrescribersVs. NV Avg

About Amoxicillin-Clavulanate Potass: Amoxicillin/clavulanic acid is a combination penicillin-type antibiotic used to treat a wide variety of bacterial infections. Show more ▾

It works by stopping the growth of bacteria. This antibiotic treats only bacterial infections. It will not work for viral infections (such as common cold, flu). Using any antibiotic when it is not needed can cause it to not work for future infections.

In 2024, this provider wrote 27 Medicare prescriptions for Amoxicillin-Clavulanate Potass, about the same volume as the typical Nevada prescriber of this medication (29). Medicare paid an average of $8.63 per fill, versus $8.39 statewide.

How often this provider prescribes it

This provider
27
NV average
29.0

This provider's prescribing volume for this medication is in line with the average NV prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$8.63
NV average
$8.39

Gross Part D cost per fill; not the patient's out-of-pocket price.

27
30-Day Fills
standardized to 30-day supplies
179
Days of Medication
total across all patients in 2024

About Amlodipine Besylate: Amlodipine is used with or without other medications to treat high blood pressure. Show more ▾

Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. Amlodipine belongs to a class of drugs known as calcium channel blockers. It works by relaxing blood vessels so blood can flow more easily. Amlodipine is also used to prevent certain types of chest pain (angina). It may help to increase your ability to exercise and decrease the frequency of angina attacks. It should not be used to treat attacks of chest pain when they occur. Use other medications (such as sublingual nitroglycerin) to relieve attacks of chest pain as directed by your doctor. A long-acting dihydropyridine calcium channel blocker. It is effective in the treatment of ANGINA PECTORIS and HYPERTENSION.

In 2024, this provider wrote 24 Medicare prescriptions for Amlodipine Besylate, about 19% of the volume of the typical Nevada prescriber of this medication (125.6). Medicare paid an average of $5.35 per fill, versus $6.11 statewide.

How often this provider prescribes it

This provider
24
NV average
125.6

This provider prescribes this medication less often than the average NV prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$5.35
NV average
$6.11

This provider's average cost per fill is below the NV average for this medication.

46
30-Day Fills
standardized to 30-day supplies
1,380
Days of Medication
total across all patients in 2024

About Eliquis: Apixaban is used to prevent serious blood clots from forming due to a certain irregular heartbeat (atrial fibrillation) or after hip/knee replacement surgery. Show more ▾

With atrial fibrillation, part of the heart does not beat the way it should. This can lead to blood clots forming, which can travel to other parts of your body (such as the lungs or legs) or increase your risk for stroke. In the United States, apixaban is also approved to treat certain types of blood clots (deep vein thrombosis-DVT, pulmonary embolus-PE) and to prevent them from forming again. Apixaban is an anticoagulant that works by blocking certain clotting proteins in your blood. An antithrombotic agent.

In 2024, this provider wrote 23 Medicare prescriptions for Eliquis, about a third of the volume of the typical Nevada prescriber of this medication (70.4). Medicare paid an average of $680.79 per fill, versus $1,006.49 statewide.

How often this provider prescribes it

This provider
23
NV average
70.4

This provider prescribes this medication less often than the average NV prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$680.79
NV average
$1,006.49

This provider's average cost per fill is below the NV average for this medication.

27.8
30-Day Fills
standardized to 30-day supplies
793
Days of Medication
total across all patients in 2024

About Oxycodone Hcl: This medication is used to help relieve moderate to severe pain. Show more ▾

Oxycodone belongs to a class of drugs known as opioid analgesics. It works in the brain to change how your body feels and responds to pain. A semisynthetic derivative of CODEINE.

In 2024, this provider wrote 22 Medicare prescriptions for Oxycodone Hcl, about a third of the volume of the typical Nevada prescriber of this medication (74.9). Medicare paid an average of $4.89 per fill, versus $18.13 statewide.

How often this provider prescribes it

This provider
22
NV average
74.9

This provider prescribes this medication less often than the average NV prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$4.89
NV average
$18.13

This provider's average cost per fill is below the NV average for this medication.

22
30-Day Fills
standardized to 30-day supplies
116
Days of Medication
total across all patients in 2024

About Atorvastatin Calcium: Atorvastatin is used along with a proper diet to help lower "bad" cholesterol and fats (such as LDL, triglycerides) and raise "good" cholesterol (HDL) in the blood. Show more ▾

It belongs to a group of drugs known as "statins." It works by reducing the amount of cholesterol made by the liver. Lowering "bad" cholesterol and triglycerides and raising "good" cholesterol decreases the risk of heart disease and helps prevent strokes and heart attacks. In addition to eating a proper diet (such as a low-cholesterol/low-fat diet), other lifestyle changes that may help this medication work better include exercising, losing weight if overweight, and stopping smoking. Consult your doctor for more details. A pyrrole and heptanoic acid derivative, HYDROXYMETHYLGLUTARYL-COA REDUCTASE INHIBITOR (statin), and ANTICHOLESTEREMIC AGENT that is used to reduce serum levels of LDL-CHOLESTEROL; APOLIPOPROTEIN B; and TRIGLYCERIDES. It is used to increase serum levels of HDL-CHOLESTEROL in the treatment of HYPERLIPIDEMIAS, and for the prevention of CARDIOVASCULAR DISEASES in patients with multiple risk factors.

In 2024, this provider wrote 20 Medicare prescriptions for Atorvastatin Calcium, about 11% of the volume of the typical Nevada prescriber of this medication (185.7). Medicare paid an average of $5.39 per fill, versus $9.59 statewide.

How often this provider prescribes it

This provider
20
NV average
185.7

This provider prescribes this medication less often than the average NV prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$5.39
NV average
$9.59

This provider's average cost per fill is below the NV average for this medication.

49.3
30-Day Fills
standardized to 30-day supplies
1,480
Days of Medication
total across all patients in 2024

About Pantoprazole Sodium: Pantoprazole is used to treat certain stomach and esophagus problems (such as acid reflux). Show more ▾

It works by decreasing the amount of acid your stomach makes. This medication relieves symptoms such as heartburn, difficulty swallowing, and cough. It helps heal acid damage to the stomach and esophagus, helps prevent ulcers, and may help prevent cancer of the esophagus. Pantoprazole belongs to a class of drugs known as proton pump inhibitors (PPIs). 2-pyridinylmethylsulfinylbenzimidazole proton pump inhibitor that is used in the treatment of GASTROESOPHAGEAL REFLUX and PEPTIC ULCER.

In 2024, this provider wrote 19 Medicare prescriptions for Pantoprazole Sodium, about a third of the volume of the typical Nevada prescriber of this medication (60.4). Medicare paid an average of $2.91 per fill, versus $11.39 statewide.

How often this provider prescribes it

This provider
19
NV average
60.4

This provider prescribes this medication less often than the average NV prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$2.91
NV average
$11.39

This provider's average cost per fill is below the NV average for this medication.

26
30-Day Fills
standardized to 30-day supplies
707
Days of Medication
total across all patients in 2024

About Prednisone: Prednisone is used to treat conditions such as arthritis, blood disorders, breathing problems, severe allergies, skin diseases, cancer, eye problems, and immune system disorders. Show more ▾

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. A synthetic anti-inflammatory glucocorticoid derived from CORTISONE. It is biologically inert and converted to PREDNISOLONE in the liver.

In 2024, this provider wrote 19 Medicare prescriptions for Prednisone, about half the volume of the typical Nevada prescriber of this medication (42.7). Medicare paid an average of $2.06 per fill, versus $3.85 statewide.

How often this provider prescribes it

This provider
19
NV average
42.7

This provider prescribes this medication less often than the average NV prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$2.06
NV average
$3.85

This provider's average cost per fill is below the NV average for this medication.

19
30-Day Fills
standardized to 30-day supplies
182
Days of Medication
total across all patients in 2024

About Doxycycline Hyclate: This medication is used to treat a wide variety of bacterial infections, including those that cause acne. Show more ▾

This medication is also used to prevent malaria. This medication is known as a tetracycline antibiotic. It works by stopping the growth of bacteria. This antibiotic treats only bacterial infections. It will not work for viral infections (such as common cold, flu). Using any antibiotic when it is not needed can cause it to not work for future infections. A synthetic tetracycline derivative with similar antimicrobial activity.

In 2024, this provider wrote 18 Medicare prescriptions for Doxycycline Hyclate, about 61% of the volume of the typical Nevada prescriber of this medication (29.4). Medicare paid an average of $8.74 per fill, versus $12.44 statewide.

How often this provider prescribes it

This provider
18
NV average
29.4

This provider prescribes this medication less often than the average NV prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$8.74
NV average
$12.44

This provider's average cost per fill is below the NV average for this medication.

18
30-Day Fills
standardized to 30-day supplies
127
Days of Medication
total across all patients in 2024

About Cefdinir: Cefdinir is used to treat a wide variety of bacterial infections. Show more ▾

This medication is known as a cephalosporin antibiotic. It works by stopping the growth of bacteria. This antibiotic treats only bacterial infections. It will not work for viral infections (such as common cold, flu). Using any antibiotic when it is not needed can cause it to not work for future infections. A third-generation oral cephalosporin antibacterial agent that is used to treat bacterial infections of the respiratory tract and skin.

In 2024, this provider wrote 16 Medicare prescriptions for Cefdinir, about half the volume of the typical Nevada prescriber of this medication (27.8). Medicare paid an average of $15.89 per fill, versus $14.82 statewide.

How often this provider prescribes it

This provider
16
NV average
27.8

This provider prescribes this medication less often than the average NV prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$15.89
NV average
$14.82

Gross Part D cost per fill; not the patient's out-of-pocket price.

16
30-Day Fills
standardized to 30-day supplies
107
Days of Medication
total across all patients in 2024

About Furosemide: Furosemide is used to reduce extra fluid in the body (edema) caused by conditions such as heart failure, liver disease, and kidney disease. Show more ▾

This can lessen symptoms such as shortness of breath and swelling in your arms, legs, and abdomen. This drug is also used to treat high blood pressure. Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. Furosemide is a "water pill" (diuretic) that causes you to make more urine. This helps your body get rid of extra water and salt. A benzoic-sulfonamide-furan. It is a diuretic with fast onset and short duration that is used for EDEMA and chronic RENAL INSUFFICIENCY.

In 2024, this provider wrote 16 Medicare prescriptions for Furosemide, about a third of the volume of the typical Nevada prescriber of this medication (54.8). Medicare paid an average of $3.72 per fill, versus $5.23 statewide.

How often this provider prescribes it

This provider
16
NV average
54.8

This provider prescribes this medication less often than the average NV prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$3.72
NV average
$5.23

This provider's average cost per fill is below the NV average for this medication.

19
30-Day Fills
standardized to 30-day supplies
404
Days of Medication
total across all patients in 2024

About Nifedipine Er: Nifedipine is used alone or in combination with other drugs to treat high blood pressure (hypertension). Show more ▾

Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. This medication is also used for certain types of chest pain (angina). It may help increase your ability to exercise and decrease the frequency of chest pain attacks. It should not be used to treat chest pain when it occurs. Use other medications (such as sublingual nitroglycerin) to relieve attacks of chest pain as directed by your doctor. Consult your doctor or pharmacist for more details. This medication is known as a calcium channel blocker. It works by relaxing and widening blood vessels so blood can flow more easily. A potent vasodilator agent with calcium antagonistic action. It is a useful anti-anginal agent that also lowers blood pressure.

In 2024, this provider wrote 16 Medicare prescriptions for Nifedipine Er, about 64% of the volume of the typical Nevada prescriber of this medication (25.1). Medicare paid an average of $8.41 per fill, versus $23.49 statewide.

How often this provider prescribes it

This provider
16
NV average
25.1

This provider prescribes this medication less often than the average NV prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$8.41
NV average
$23.49

This provider's average cost per fill is below the NV average for this medication.

30
30-Day Fills
standardized to 30-day supplies
900
Days of Medication
total across all patients in 2024

About Metoprolol Tartrate: Metoprolol is used with or without other medications to treat high blood pressure (hypertension). Show more ▾

Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. This medication is also used to treat chest pain (angina) and to improve survival after a heart attack. Metoprolol belongs to a class of drugs known as beta blockers. It works by blocking the action of certain natural chemicals in your body, such as epinephrine, on the heart and blood vessels. This effect lowers the heart rate, blood pressure, and strain on the heart. A selective adrenergic beta-1 blocking agent that is commonly used to treat ANGINA PECTORIS; HYPERTENSION; and CARDIAC ARRHYTHMIAS.

In 2024, this provider wrote 15 Medicare prescriptions for Metoprolol Tartrate, about a quarter of the volume of the typical Nevada prescriber of this medication (54.1). Medicare paid an average of $5.25 per fill, versus $6.63 statewide.

How often this provider prescribes it

This provider
15
NV average
54.1

This provider prescribes this medication less often than the average NV prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$5.25
NV average
$6.63

This provider's average cost per fill is below the NV average for this medication.

28
30-Day Fills
standardized to 30-day supplies
840
Days of Medication
total across all patients in 2024

About Naloxone Hcl: Naloxone is used for the emergency treatment of known or suspected opioid overdose. Show more ▾

Serious opioid overdose symptoms may include unusual sleepiness, unusual difficulty waking up, or breathing problems (ranging from slow/shallow breathing to no breathing). Other symptoms of overdose may include very small "pinpoint" pupils, slow heartbeat, or low blood pressure. If someone has serious overdose symptoms but you are not sure if the symptoms are due to opioid overdose, give naloxone right away anyway, since lasting slow/shallow breathing may cause permanent damage to the brain or death. Since symptoms of opioid overdose may return after treatment, be sure to get medical help right away after giving the first dose of naloxone. This medication belongs to a class of drugs known as opioid antagonists. It works by blocking the effects of the opioid in the brain. A specific opiate antagonist that has no agonist activity. It is a competitive antagonist at mu, delta, and kappa opioid receptors.

In 2024, this provider wrote 15 Medicare prescriptions for Naloxone Hcl, about a third of the volume of the typical Nevada prescriber of this medication (38.4). Medicare paid an average of $46.02 per fill, versus $66.73 statewide.

How often this provider prescribes it

This provider
15
NV average
38.4

This provider prescribes this medication less often than the average NV prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$46.02
NV average
$66.73

This provider's average cost per fill is below the NV average for this medication.

15
30-Day Fills
standardized to 30-day supplies
162
Days of Medication
total across all patients in 2024

About Carvedilol: Carvedilol is used to treat high blood pressure and heart failure. Show more ▾

It is also used after a heart attack to improve the chance of survival if your heart is not pumping well. Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. This drug works by blocking the action of certain natural substances in your body, such as epinephrine, on the heart and blood vessels. This effect lowers your heart rate, blood pressure, and strain on your heart. Carvedilol belongs to a class of drugs known as alpha and beta blockers. A carbazole and propanol derivative that acts as a non-cardioselective beta blocker and vasodilator. It has blocking activity for ALPHA 1 ADRENERGIC RECEPTORS and, at higher doses, may function as a blocker of CALCIUM CHANNELS; it also has antioxidant properties. Carvedilol is used in the treatment of HYPERTENSION; ANGINA PECTORIS; and HEART FAILURE. It can also reduce the risk of death following MYOCARDIAL INFARCTION.

In 2024, this provider wrote 14 Medicare prescriptions for Carvedilol, about a quarter of the volume of the typical Nevada prescriber of this medication (54.8). Medicare paid an average of $3.66 per fill, versus $8.56 statewide.

How often this provider prescribes it

This provider
14
NV average
54.8

This provider prescribes this medication less often than the average NV prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$3.66
NV average
$8.56

This provider's average cost per fill is below the NV average for this medication.

22.5
30-Day Fills
standardized to 30-day supplies
675
Days of Medication
total across all patients in 2024

About Cephalexin: This medication is used to treat a wide variety of bacterial infections. Show more ▾

This medication is known as a cephalosporin antibiotic. It works by stopping the growth of bacteria. This medication will not work for viral infections (such as common cold, flu). Unnecessary use or misuse of any antibiotic can lead to its decreased effectiveness. A semisynthetic cephalosporin antibiotic with antimicrobial activity similar to that of CEPHALORIDINE or CEPHALOTHIN, but somewhat less potent. It is effective against both gram-positive and gram-negative organisms.

In 2024, this provider wrote 12 Medicare prescriptions for Cephalexin, about half the volume of the typical Nevada prescriber of this medication (27.8). Medicare paid an average of $8.48 per fill, versus $7.61 statewide.

How often this provider prescribes it

This provider
12
NV average
27.8

This provider prescribes this medication less often than the average NV prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$8.48
NV average
$7.61

Gross Part D cost per fill; not the patient's out-of-pocket price.

12
30-Day Fills
standardized to 30-day supplies
75
Days of Medication
total across all patients in 2024

About Midodrine Hcl: This medication is used for certain patients who have symptoms of low blood pressure when standing. Show more ▾

This condition is also known as orthostatic hypotension. Midodrine is used in people whose daily activities are severely affected by this condition, even after other treatments are used (such as support stockings). It is known as a sympathomimetic (alpha receptor agonist) that acts on the blood vessels to raise blood pressure. An ethanolamine derivative that is an adrenergic alpha-1 agonist. It is used as a vasoconstrictor agent in the treatment of HYPOTENSION.

In 2024, this provider wrote 12 Medicare prescriptions for Midodrine Hcl, about half the volume of the typical Nevada prescriber of this medication (23.8). Medicare paid an average of $37.27 per fill, versus $80.67 statewide.

How often this provider prescribes it

This provider
12
NV average
23.8

This provider prescribes this medication less often than the average NV prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$37.27
NV average
$80.67

This provider's average cost per fill is below the NV average for this medication.

12
30-Day Fills
standardized to 30-day supplies
245
Days of Medication
total across all patients in 2024

About Clopidogrel: Clopidogrel is used to prevent heart attacks and strokes in persons with heart disease (recent heart attack), recent stroke, or blood circulation disease (peripheral vascular disease). Show more ▾

It is also used with aspirin to treat new/worsening chest pain (new heart attack, unstable angina) and to keep blood vessels open and prevent blood clots after certain procedures (such as cardiac stent). Clopidogrel works by blocking platelets from sticking together and prevents them from forming harmful clots. It is an antiplatelet drug. It helps keep blood flowing smoothly in your body. A ticlopidine analog and platelet purinergic P2Y receptor antagonist that inhibits adenosine diphosphate-mediated PLATELET AGGREGATION. It is used to prevent THROMBOEMBOLISM in patients with ARTERIAL OCCLUSIVE DISEASES; MYOCARDIAL INFARCTION; STROKE; or ATRIAL FIBRILLATION.

In 2024, this provider wrote 11 Medicare prescriptions for Clopidogrel, about a quarter of the volume of the typical Nevada prescriber of this medication (45.5). Medicare paid an average of $3.62 per fill, versus $11.14 statewide.

How often this provider prescribes it

This provider
11
NV average
45.5

This provider prescribes this medication less often than the average NV prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$3.62
NV average
$11.14

This provider's average cost per fill is below the NV average for this medication.

18
30-Day Fills
standardized to 30-day supplies
510
Days of Medication
total across all patients in 2024
No medications match the current filters.
= the 5 medications this provider prescribes most.▲ More than typical≈ Typical▼ Less than typical= prescription volume vs the average NV prescriber of the same medication; volume reflects practice size as well as clinical preference.Green cost= below the NV average cost per fill.

About this data. The prescription history for AMAKA JENNIFER ONYIAGU M.D is compiled from the Centers for Medicare & Medicaid Services (CMS) Medicare Part D Prescriber Public Use File for calendar year 2024, the most recent federal release. Figures cover prescriptions filled for Medicare Part D beneficiaries only; prescriptions under private insurance, Medicaid, or self-pay plans are not included. Because prescribing decisions are generally consistent across coverage types, this record offers a useful view of the overall Internal Medicine prescribing approach at this Las Vegas, NV practice.

Reading the costs. Drug costs are gross amounts paid to pharmacies under Part D, including both plan and beneficiary payments. They are not the price a patient pays at the pharmacy counter. Medications with fewer than 11 claims are excluded from the federal source data, and state comparisons use the average among NV prescribers of the same medication and form, shown only when at least five prescribers contribute. Always confirm current medications and costs directly with the provider and your plan.

About the medication summaries. Drug use descriptions come from the CMS Medicare Part D Drug Spending Dashboard (2024), and substance definitions from Medical Subject Headings (MeSH) 2026, U.S. National Library of Medicine. They are summaries that do not contain all possible information about a medication and are not individual medical advice. Ask a health care professional about any medication and your specific health needs.