GONUL D OZAY MD
Prescription History 1538884184
Student in an Organized Health Care Education/Training Program in Washington, DC

Active since October 06, 2022
3800 RESERVOIR RD NW, WASHINGTON, DC 20007(202) 444-2000 Get Directions

NPPES record last updated: March 31, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Mar 31, 2026, Jun 18, 2025, Oct 6, 2022 (3 updates tracked since 2022).

Medicare Part D Prescription History

Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for GONUL D OZAY MD, an active Student in an Organized Health Care Education/Training Program specialist practicing in Washington, DC. Our medical registry currently tracks 15 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 783 documented patient claims. Among these therapy options, the most frequently utilized medication is Rytary, which accounts for 174 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.

15
Medications
783
Total Claims
1,653
30-Day Fills
Rytary
Most Prescribed · 174 claims
View details
15 medications · 2023 Medicare Part D
Medicare Part D medications prescribed by GONUL D OZAY MD in 2023, with prescription volumes, average cost per fill, and DC state comparisons
Medication Prescriptions (2023)Rx (2023) Avg Cost per FillCost / Fill Vs. Other DC PrescribersVs. DC Avg

About Rytary: This combination medication is used to treat symptoms of Parkinson's disease or Parkinson-like symptoms (such as shakiness, stiffness, difficulty moving). Show more ▾

Parkinson's disease is thought to be caused by too little of a naturally occurring substance (dopamine) in the brain. Levodopa changes into dopamine in the brain, helping to control movement. Carbidopa prevents the breakdown of levodopa in the bloodstream so more levodopa can enter the brain. Carbidopa can also reduce some of levodopa's side effects such as nausea and vomiting.

In 2023, this provider wrote 174 Medicare prescriptions for Rytary, about 2.1 times the volume of the typical District Of Columbia prescriber of this medication (82). Medicare paid an average of $1,294.65 per fill, versus $1,442.39 statewide.

How often this provider prescribes it

This provider
174
DC average
82.0

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

What Medicare paid per fill

This provider
$1,294.65
DC average
$1,442.39

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

349.9
30-Day Fills
standardized to 30-day supplies
10,226
Days of Medication
total across all patients in 2023

About Rivastigmine: Rivastigmine is used to treat confusion (dementia) related to Alzheimer's disease and to Parkinson's disease. Show more ▾

Rivastigmine does not cure either of these diseases, but it may improve memory, awareness, and the ability to perform daily functions. This medication works by restoring the balance of natural substances (neurotransmitters) in the brain. A carbamate-derived reversible CHOLINESTERASE INHIBITOR that is selective for the CENTRAL NERVOUS SYSTEM and is used for the treatment of DEMENTIA in ALZHEIMER DISEASE and PARKINSON DISEASE.

In 2023, this provider wrote 123 Medicare prescriptions for Rivastigmine, about 2.6 times the volume of the typical District Of Columbia prescriber of this medication (48). Medicare paid an average of $362.91 per fill, versus $500.57 statewide.

How often this provider prescribes it

This provider
123
DC average
48.0

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

What Medicare paid per fill

This provider
$362.91
DC average
$500.57

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

266
30-Day Fills
standardized to 30-day supplies
7,964
Days of Medication
total across all patients in 2023

About Rasagiline Mesylate: Rasagiline is used alone or with other medications (such as levodopa/carbidopa) to treat symptoms of Parkinson's disease. Show more ▾

It can help improve symptoms such as shakiness, stiffness, and difficulty moving. It can also help reduce the amount of off time (periods of slow movement or stiffness). Rasagiline belongs to a class of drugs known as MAO inhibitors. It works by increasing the levels of certain natural substances in the brain (such as dopamine, norepinephrine, serotonin). Parkinson's disease is thought to be caused by too little dopamine in the brain.

In 2023, this provider wrote 85 Medicare prescriptions for Rasagiline Mesylate, about 1.3 times the volume of the typical District Of Columbia prescriber of this medication (66). Medicare paid an average of $420.04 per fill, versus $548.69 statewide.

How often this provider prescribes it

This provider
85
DC average
66.0

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

What Medicare paid per fill

This provider
$420.04
DC average
$548.69

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

236.3
30-Day Fills
standardized to 30-day supplies
7,068
Days of Medication
total across all patients in 2023

About Nuplazid: Pimavanserin is used to treat the symptoms of a certain mental/mood disorder (psychosis) that might occur with Parkinson's disease. Show more ▾

It helps lessen symptoms such as seeing or hearing things that are not there (hallucinations) and false beliefs (delusions). Pimavanserin belongs to a class of drugs known as atypical antipsychotics, though it works differently from most other drugs in this class.

In 2023, this provider wrote 79 Medicare prescriptions for Nuplazid, about 1.2 times the volume of the typical District Of Columbia prescriber of this medication (67). Medicare paid an average of $6,489.90 per fill, versus $5,646.59 statewide.

How often this provider prescribes it

This provider
79
DC average
67.0

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

What Medicare paid per fill

This provider
$6,489.90
DC average
$5,646.59

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

105
30-Day Fills
standardized to 30-day supplies
3,108
Days of Medication
total across all patients in 2023

About Carbidopa-Levodopa: This combination medication is used to treat symptoms of Parkinson's disease or Parkinson-like symptoms (such as shakiness, stiffness, difficulty moving). Show more ▾

Parkinson's disease is thought to be caused by too little of a naturally occurring substance (dopamine) in the brain. Levodopa changes into dopamine in the brain, helping to control movement. Carbidopa prevents the breakdown of levodopa in the bloodstream so more levodopa can enter the brain. Carbidopa can also reduce some of levodopa's side effects such as nausea and vomiting.

In 2023, this provider wrote 48 Medicare prescriptions for Carbidopa-Levodopa, about 86% of the volume of the typical District Of Columbia prescriber of this medication (56). Medicare paid an average of $45.88 per fill, versus $53.96 statewide.

How often this provider prescribes it

This provider
48
DC average
56.0

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

What Medicare paid per fill

This provider
$45.88
DC average
$53.96

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

130
30-Day Fills
standardized to 30-day supplies
3,875
Days of Medication
total across all patients in 2023

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.

In 2023, this provider wrote 45 Medicare prescriptions for Donepezil Hcl, about the same volume as the typical District Of Columbia prescriber of this medication (44). Medicare paid an average of $28.76 per fill, versus $18.66 statewide.

How often this provider prescribes it

This provider
45
DC average
44.0

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

What Medicare paid per fill

This provider
$28.76
DC average
$18.66

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

115.4
30-Day Fills
standardized to 30-day supplies
3,448
Days of Medication
total across all patients in 2023

About Gocovri: Amantadine is used to treat Parkinson's disease, as well as side effects caused by drugs (such as drug-induced extrapyramidal symptoms), chemicals, and other medical conditions. Show more ▾

In these cases, this medication may help to improve your range of motion and ability to exercise. For the treatment of these conditions, amantadine is believed to work by restoring the balance of natural chemicals (neurotransmitters) in the brain. Amantadine is used to prevent or treat a certain type of flu (influenza A). If you have been infected with the flu, this medication may help make your symptoms less severe and shorten the time it will take you to get better. Taking amantadine if you have been or will be exposed to the flu may help to prevent you from getting the flu. This medication is an antiviral that is believed to work by stopping growth of the flu virus. This medication is not a vaccine. To increase the chance that you will not get the flu, it is important to get a flu shot once a year at the beginning of every flu season, if possible. Based on the recommendation from the Centers for Disease Control (CDC) in the US, amantadine should not be used to treat or prevent influenza A because the current influenza A virus in the United States and Canada is resistant to this medication. For more details, talk to your doctor or pharmacist. An antiviral that is used in the prophylactic or symptomatic treatment of influenza A. It is also used as an antiparkinsonian agent, to treat extrapyramidal reactions, and for postherpetic neuralgia. The mechanisms of its effects in movement disorders are not well understood but probably reflect an increase in synthesis and release of dopamine, with perhaps some inhibition of dopamine uptake.

In 2023, this provider wrote 43 Medicare prescriptions for Gocovri, about 1.4 times the volume of the typical District Of Columbia prescriber of this medication (30). Medicare paid an average of $4,268.15 per fill, versus $3,980.47 statewide.

How often this provider prescribes it

This provider
43
DC average
30.0

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

What Medicare paid per fill

This provider
$4,268.15
DC average
$3,980.47

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

83
30-Day Fills
standardized to 30-day supplies
2,490
Days of Medication
total across all patients in 2023

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.

In 2023, this provider wrote 43 Medicare prescriptions for Memantine Hcl, about the same volume as the typical District Of Columbia prescriber of this medication (44). Medicare paid an average of $28.20 per fill, versus $54.11 statewide.

How often this provider prescribes it

This provider
43
DC average
44.0

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

What Medicare paid per fill

This provider
$28.20
DC average
$54.11

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

68.1
30-Day Fills
standardized to 30-day supplies
1,945
Days of Medication
total across all patients in 2023

About Nourianz: Istradefylline is used by people with Parkinson's disease taking carbidopa/levodopa to reduce the amount of off time (periods of slow movement or stiffness).

In 2023, this provider wrote 40 Medicare prescriptions for Nourianz, about 78% of the volume of the typical District Of Columbia prescriber of this medication (51). Medicare paid an average of $3,495.29 per fill, versus $3,322.08 statewide.

How often this provider prescribes it

This provider
40
DC average
51.0

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

What Medicare paid per fill

This provider
$3,495.29
DC average
$3,322.08

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

74
30-Day Fills
standardized to 30-day supplies
2,217
Days of Medication
total across all patients in 2023

About Escitalopram Oxalate: Escitalopram is used to treat depression and anxiety. Show more ▾

It works by helping to restore the balance of a certain natural substance (serotonin) in the brain. Escitalopram belongs to a class of drugs known as selective serotonin reuptake inhibitors (SSRI). It may improve your energy level and feelings of well-being and decrease nervousness. S-enantiomer of CITALOPRAM. Belongs to a class of drugs known as SELECTIVE SEROTONIN REUPTAKE INHIBITORS, used to treat depression and generalized anxiety disorder.

In 2023, this provider wrote 25 Medicare prescriptions for Escitalopram Oxalate, about 86% of the volume of the typical District Of Columbia prescriber of this medication (29). Medicare paid an average of $34.15 per fill, versus $17.98 statewide.

How often this provider prescribes it

This provider
25
DC average
29.0

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

What Medicare paid per fill

This provider
$34.15
DC average
$17.98

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

59
30-Day Fills
standardized to 30-day supplies
1,768
Days of Medication
total across all patients in 2023

About Duloxetine Hcl: Duloxetine is used to treat depression and anxiety. Show more ▾

In addition, duloxetine is used to help relieve nerve pain (peripheral neuropathy) in people with diabetes or ongoing pain due to medical conditions such as arthritis, chronic back pain, or fibromyalgia (a condition that causes widespread pain). Duloxetine may improve your mood, sleep, appetite, and energy level, and decrease nervousness. It can also decrease pain due to certain medical conditions. Duloxetine is known as a serotonin-norepinephrine reuptake inhibitor (SNRI). This medication works by helping to restore the balance of certain natural substances (serotonin and norepinephrine) in the brain. A thiophene derivative and selective NEUROTRANSMITTER UPTAKE INHIBITOR for SEROTONIN and NORADRENALINE (SNRI). It is an ANTIDEPRESSIVE AGENT and ANXIOLYTIC, and is also used for the treatment of pain in patients with DIABETES MELLITUS and FIBROMYALGIA.

In 2023, this provider wrote 19 Medicare prescriptions for Duloxetine Hcl, about 66% of the volume of the typical District Of Columbia prescriber of this medication (29). Medicare paid an average of $50.73 per fill, versus $47.18 statewide.

How often this provider prescribes it

This provider
19
DC average
29.0

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

What Medicare paid per fill

This provider
$50.73
DC average
$47.18

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

49
30-Day Fills
standardized to 30-day supplies
1,439
Days of Medication
total across all patients in 2023

About Memantine Hcl Er: 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.

In 2023, this provider wrote 17 Medicare prescriptions for Memantine Hcl Er, about half the volume of the typical District Of Columbia prescriber of this medication (35). Medicare paid an average of $300.39 per fill, versus $209.51 statewide.

How often this provider prescribes it

This provider
17
DC average
35.0

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

What Medicare paid per fill

This provider
$300.39
DC average
$209.51

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

39
30-Day Fills
standardized to 30-day supplies
1,170
Days of Medication
total across all patients in 2023

About Droxidopa: Droxidopa is used to treat symptoms of low blood pressure when standing, caused by a certain medical condition (neurogenic orthostatic hypotension-NOH). Show more ▾

This medication can lessen symptoms of low blood pressure when standing (orthostatic hypotension), such as dizziness, lightheadedness, or the feeling that you are about to black out. Droxidopa is used by people whose daily activities are severely affected by this condition, even after other treatments are used (such as support stockings, water bolus). It is thought to work by making the blood vessels become more narrow, which increases blood pressure. A synthetic precursor of norepinephrine that is used in the treatment of PARKINSONIAN DISORDERS and ORTHOSTATIC HYPOTENSION.

In 2023, this provider wrote 16 Medicare prescriptions for Droxidopa, about a third of the volume of the typical District Of Columbia prescriber of this medication (42). Medicare paid an average of $638.26 per fill, versus $4,969.43 statewide.

How often this provider prescribes it

This provider
16
DC average
42.0

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

What Medicare paid per fill

This provider
$638.26
DC average
$4,969.43

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

20
30-Day Fills
standardized to 30-day supplies
598
Days of Medication
total across all patients in 2023

About Quetiapine Fumarate: This medication is used to treat certain mental/mood conditions (such as schizophrenia, bipolar disorder, sudden episodes of mania or depression associated with bipolar disorder). Show more ▾

Quetiapine is known as an anti-psychotic drug (atypical type). It works by helping to restore the balance of certain natural substances (neurotransmitters) in the brain. This medication can decrease hallucinations and improve your concentration. It helps you to think more clearly and positively about yourself, feel less nervous, and take a more active part in everyday life. It may also improve your mood, sleep, appetite, and energy level. Quetiapine can help prevent severe mood swings or decrease how often mood swings occur. A dibenzothiazepine and ANTIPSYCHOTIC AGENT that targets the SEROTONIN 5-HT2 RECEPTOR; HISTAMINE H1 RECEPTOR, adrenergic alpha1 and alpha2 receptors, as well as the DOPAMINE D1 RECEPTOR and DOPAMINE D2 RECEPTOR. It is used in the treatment of SCHIZOPHRENIA; BIPOLAR DISORDER and DEPRESSIVE DISORDER.

In 2023, this provider wrote 15 Medicare prescriptions for Quetiapine Fumarate, about a third of the volume of the typical District Of Columbia prescriber of this medication (46). Medicare paid an average of $21.13 per fill, versus $32.62 statewide.

How often this provider prescribes it

This provider
15
DC average
46.0

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

What Medicare paid per fill

This provider
$21.13
DC average
$32.62

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

32.8
30-Day Fills
standardized to 30-day supplies
983
Days of Medication
total across all patients in 2023

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.

In 2023, this provider wrote 11 Medicare prescriptions for Midodrine Hcl, about half the volume of the typical District Of Columbia prescriber of this medication (24). Medicare paid an average of $154.10 per fill, versus $86.04 statewide.

How often this provider prescribes it

This provider
11
DC average
24.0

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

What Medicare paid per fill

This provider
$154.10
DC average
$86.04

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

25
30-Day Fills
standardized to 30-day supplies
743
Days of Medication
total across all patients in 2023
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 DC prescriber of the same medication; volume reflects practice size as well as clinical preference.Green cost= below the DC average cost per fill.

About this data. The prescription history for GONUL D OZAY MD is compiled from the Centers for Medicare & Medicaid Services (CMS) Medicare Part D Prescriber Public Use File for calendar year 2023, 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 Student in an Organized Health Care Education/Training Program prescribing approach at this Washington, DC 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 volume among DC prescribers of the same medication. Always confirm current medications and costs directly with the provider and your plan.