TRESA ELIZABETH ZACHARIAS MD
Prescription History 1366838708
Psychiatry & Neurology - Neurology in Chicago, IL
Medicare Part D Prescription History
Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for TRESA ELIZABETH ZACHARIAS MD, an active Neurology specialist practicing in Chicago, IL. Our medical registry currently tracks 10 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 330 documented patient claims. Among these therapy options, the most frequently utilized medication is Emgality Pen, which accounts for 71 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.
| Medication | Prescriptions (2024)Rx (2024) | Avg Cost per FillCost / Fill | Vs. Other IL PrescribersVs. IL Avg |
|---|---|---|---|
| Emgality PenGalcanezumab-Gnlm | 71 | $769.47▼ below IL avg | ▲ More than typical |
About Emgality Pen: This medication is used to help prevent migraine. Show more ▾ It is also used to treat a certain type of headache (episodic cluster headache). Galcanezumab belongs to a class of drugs known as monoclonal antibodies. This medication may work by changing the amounts of certain natural substances in the brain. Using this medication can help improve your ability to concentrate and do your usual tasks. Immunoglobulin G4 anti-human calcitonin gene-related peptide monoclonal antibody for the treatment of migraine. In 2024, this provider wrote 71 Medicare prescriptions for Emgality Pen, about 2.2 times the volume of the typical Illinois prescriber of this medication (31.8). Medicare paid an average of $769.47 per fill, versus $825.54 statewide. How often this provider prescribes it This provider prescribes this medication more often than the average IL prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill This provider's average cost per fill is below the IL average for this medication. 77 30-Day Fills standardized to 30-day supplies 2,276 Days of Medication total across all patients in 2024 | |||
| Donepezil Hcl | 69 | $13.29 | ≈ Typical |
About Donepezil Hcl: Donepezil is used to treat confusion (dementia) related to Alzheimer's disease. Show more ▾ It does not cure Alzheimer's disease, but it may improve memory, awareness, and the ability to function. This medication is an enzyme blocker that works by restoring the balance of natural substances (neurotransmitters) in the brain. An indan and piperidine derivative that acts as a selective and reversible inhibitor of ACETYLCHOLINESTERASE. Donepezil is highly selective for the central nervous system and is used in the management of mild to moderate DEMENTIA in ALZHEIMER DISEASE. In 2024, this provider wrote 69 Medicare prescriptions for Donepezil Hcl, about the same volume as the typical Illinois prescriber of this medication (67.2). Medicare paid an average of $13.29 per fill, versus $11.52 statewide. How often this provider prescribes it This provider's prescribing volume for this medication is in line with the average IL prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill Gross Part D cost per fill; not the patient's out-of-pocket price. 205.3 30-Day Fills standardized to 30-day supplies 6,160 Days of Medication total across all patients in 2024 | |||
| Gabapentin | 56 | $15.50▼ below IL avg | ▼ Less than typical |
About Gabapentin: Gabapentin is used with other medications to prevent and control seizures. Show more ▾ It is also used to relieve nerve pain following shingles (a painful rash due to herpes zoster infection) in adults. Gabapentin is known as an anticonvulsant or antiepileptic drug. A cyclohexane-gamma-aminobutyric acid derivative that is used for the treatment of PARTIAL SEIZURES; NEURALGIA; and RESTLESS LEGS SYNDROME. In 2024, this provider wrote 56 Medicare prescriptions for Gabapentin, about 65% of the volume of the typical Illinois prescriber of this medication (86.8). Medicare paid an average of $15.50 per fill, versus $15.83 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average IL prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill This provider's average cost per fill is below the IL average for this medication. 129 30-Day Fills standardized to 30-day supplies 3,870 Days of Medication total across all patients in 2024 | |||
| Memantine Hcl | 35 | $35.54 | ▼ Less than typical |
About Memantine Hcl: Memantine is used to treat moderate to severe confusion (dementia) related to Alzheimer's disease. Show more ▾ It does not cure Alzheimer's disease, but it may improve memory, awareness, and the ability to perform daily functions. This medication works by blocking the action of a certain natural substance in the brain (glutamate) that is believed to be linked to symptoms of Alzheimer's disease. AMANTADINE derivative that has some dopaminergic effects. It has been proposed as an antiparkinson agent. In 2024, this provider wrote 35 Medicare prescriptions for Memantine Hcl, about half the volume of the typical Illinois prescriber of this medication (66). Medicare paid an average of $35.54 per fill, versus $30.45 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average IL prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill Gross Part D cost per fill; not the patient's out-of-pocket price. 94 30-Day Fills standardized to 30-day supplies 2,820 Days of Medication total across all patients in 2024 | |||
| Sumatriptan Succinate | 23 | $39.96 | ≈ Typical |
About Sumatriptan Succinate: Sumatriptan is used to treat migraines. Show more ▾ It helps to relieve headache, pain, and other migraine symptoms (including nausea, vomiting, sensitivity to light/sound). Prompt treatment helps you return to your normal routine and may decrease your need for other pain medications. Sumatriptan belongs to a class of drugs known as triptans. It affects a certain natural substance (serotonin) that causes narrowing of blood vessels in the brain. It may also relieve pain by affecting certain nerves in the brain. Sumatriptan does not prevent future migraines or lessen how often you get migraine attacks. A serotonin agonist that acts selectively at 5HT1 receptors. It is used in the treatment of MIGRAINE DISORDERS. In 2024, this provider wrote 23 Medicare prescriptions for Sumatriptan Succinate, about the same volume as the typical Illinois prescriber of this medication (22.5). Medicare paid an average of $39.96 per fill, versus $16.86 statewide. How often this provider prescribes it This provider's prescribing volume for this medication is in line with the average IL prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill Gross Part D cost per fill; not the patient's out-of-pocket price. 24 30-Day Fills standardized to 30-day supplies 567 Days of Medication total across all patients in 2024 | |||
| RizatriptanRizatriptan Benzoate | 18 | $19.90 | ≈ Typical |
About Rizatriptan: Rizatriptan is used to treat migraines. Show more ▾ It helps to relieve headache, pain, and other migraine symptoms (including nausea, vomiting, sensitivity to light/sound). Prompt treatment helps you return to your normal routine and may decrease your need for other pain medications. Rizatriptan belongs to a class of drugs known as triptans. It affects a certain natural substance (serotonin) that causes narrowing of blood vessels in the brain. It may also relieve pain by affecting certain nerves in the brain. Rizatriptan does not prevent future migraines or lessen how often you get migraine attacks. In 2024, this provider wrote 18 Medicare prescriptions for Rizatriptan, about 88% of the volume of the typical Illinois prescriber of this medication (20.5). Medicare paid an average of $19.90 per fill, versus $17.87 statewide. How often this provider prescribes it This provider's prescribing volume for this medication is in line with the average IL prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill Gross Part D cost per fill; not the patient's out-of-pocket price. 22 30-Day Fills standardized to 30-day supplies 546 Days of Medication total across all patients in 2024 | |||
| Aimovig AutoinjectorErenumab-Aooe | 16 | $720.76▼ below IL avg | ▼ Less than typical |
About Aimovig Autoinjector: This medication is used to help prevent migraine. Show more ▾ This medication may work by changing the amounts of certain natural substances in the brain. Erenumab belongs to a class of drugs known as monoclonal antibodies. Preventing frequent migraine attacks can help improve your ability to concentrate and do your usual tasks. Anti-human calcitonin gene-related peptide monoclonal antibody for the prevention of migraine headaches. In 2024, this provider wrote 16 Medicare prescriptions for Aimovig Autoinjector, about half the volume of the typical Illinois prescriber of this medication (31.2). Medicare paid an average of $720.76 per fill, versus $839.25 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average IL prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill This provider's average cost per fill is below the IL average for this medication. 16 30-Day Fills standardized to 30-day supplies 462 Days of Medication total across all patients in 2024 | |||
| Lamotrigine | 15 | $2.85▼ below IL avg | ▼ Less than typical |
About Lamotrigine: Lamotrigine is used alone or with other medications to prevent and control seizures. Show more ▾ It may also be used to help prevent the extreme mood swings of bipolar disorder in adults. Lamotrigine is known as an anticonvulsant or antiepileptic drug. It is thought to work by restoring the balance of certain natural substances in the brain. This drug is not approved for use in children younger than 2 years due to an increased risk of side effects (such as infections). A phenyltriazine compound, sodium and calcium channel blocker that is used for the treatment of SEIZURES and BIPOLAR DISORDER. In 2024, this provider wrote 15 Medicare prescriptions for Lamotrigine, about a third of the volume of the typical Illinois prescriber of this medication (50). Medicare paid an average of $2.85 per fill, versus $12.11 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average IL prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill This provider's average cost per fill is below the IL average for this medication. 27 30-Day Fills standardized to 30-day supplies 810 Days of Medication total across all patients in 2024 | |||
| Clonazepam | 14 | $1.68▼ below IL avg | ▼ Less than typical |
About Clonazepam: Clonazepam is used to prevent and control seizures. Show more ▾ This medication is known as an anticonvulsant or antiepileptic drug. It is also used to treat panic attacks. Clonazepam works by calming your brain and nerves. It belongs to a class of drugs called benzodiazepines. An anticonvulsant used for several types of seizures, including myotonic or atonic seizures, photosensitive epilepsy, and absence seizures, although tolerance may develop. It is seldom effective in generalized tonic-clonic or partial seizures. The mechanism of action appears to involve the enhancement of GAMMA-AMINOBUTYRIC ACID receptor responses. In 2024, this provider wrote 14 Medicare prescriptions for Clonazepam, about a third of the volume of the typical Illinois prescriber of this medication (48.3). Medicare paid an average of $1.68 per fill, versus $7.29 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average IL prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill This provider's average cost per fill is below the IL average for this medication. 14 30-Day Fills standardized to 30-day supplies 420 Days of Medication total across all patients in 2024 | |||
| Levetiracetam | 13 | $37.54 | ▼ Less than typical |
About Levetiracetam: Levetiracetam is used to treat seizures (epilepsy). Show more ▾ It belongs to a class of drugs known as anticonvulsants. Levetiracetam may decrease the number of seizures you have. A pyrrolidinone and acetamide derivative that is used primarily for the treatment of SEIZURES and some movement disorders, and as a nootropic agent. In 2024, this provider wrote 13 Medicare prescriptions for Levetiracetam, about a quarter of the volume of the typical Illinois prescriber of this medication (58.3). Medicare paid an average of $37.54 per fill, versus $30.94 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average IL prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill Gross Part D cost per fill; not the patient's out-of-pocket price. 19 30-Day Fills standardized to 30-day supplies 558 Days of Medication total across all patients in 2024 | |||
About this data. The prescription history for TRESA ELIZABETH ZACHARIAS MD 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 Neurology prescribing approach at this Chicago, IL 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 IL 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.
