DR. SHAWNA CHAN MD
Prescription History 1326676321
Psychiatry & Neurology - Psychiatry in Los Angeles, CA
Medicare Part D Prescription History
Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for DR. SHAWNA CHAN MD, an active Psychiatry specialist practicing in Los Angeles, CA. Our medical registry currently tracks 18 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 523 documented patient claims. Among these therapy options, the most frequently utilized medication is Clozapine, which accounts for 126 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 (2023)Rx (2023) | Avg Cost per FillCost / Fill | Vs. Other CA PrescribersVs. CA Avg |
|---|---|---|---|
| Clozapine | 126 | $86.45▼ below CA avg | ▲ More than typical |
About Clozapine: See also Warning section. Show more ▾ This medication is used to treat certain mental/mood disorders (schizophrenia, schizoaffective disorders). Clozapine is a psychiatric medication (anti-psychotic type) that works by helping to restore the balance of certain natural substances (neurotransmitters) in the brain. Clozapine decreases hallucinations and helps prevent suicide in people who are likely to try to harm themselves. It helps you to think more clearly and positively about yourself, feel less nervous, and take part in everyday life. A tricylic dibenzodiazepine, classified as an atypical antipsychotic agent. It binds several types of central nervous system receptors, and displays a unique pharmacological profile. Clozapine is a serotonin antagonist, with strong binding to 5-HT 2A/2C receptor subtype. It also displays strong affinity to several dopaminergic receptors, but shows only weak antagonism at the dopamine D2 receptor, a receptor commonly thought to modulate neuroleptic activity. Agranulocytosis is a major adverse effect associated with administration of this agent. In 2023, this provider wrote 126 Medicare prescriptions for Clozapine, about 2.2 times the volume of the typical California prescriber of this medication (57). Medicare paid an average of $86.45 per fill, versus $89.25 statewide. How often this provider prescribes it This provider prescribes this medication more often than the average CA 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 CA average for this medication. 126.4 30-Day Fills standardized to 30-day supplies 3,420 Days of Medication total across all patients in 2023 | |||
| Lorazepam | 44 | $9.45 | ≈ Typical |
About Lorazepam: This medication is used to treat serious seizures that do not stop (status epilepticus). Show more ▾ It is also used before surgeries or procedures to cause drowsiness, decrease anxiety, and cause forgetfulness about the procedure or surgery. Lorazepam belongs to a class of medications called benzodiazepines, which produce a calming effect on the brain and nerves (central nervous system). It is thought to work by increasing the effect of a certain natural chemical (GABA) in the brain. A benzodiazepine used as an anti-anxiety agent with few side effects. It also has hypnotic, anticonvulsant, and considerable sedative properties and has been proposed as a preanesthetic agent. In 2023, this provider wrote 44 Medicare prescriptions for Lorazepam, about the same volume as the typical California prescriber of this medication (45). Medicare paid an average of $9.45 per fill, versus $7.40 statewide. How often this provider prescribes it This provider's prescribing volume for this medication is in line with the average CA 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. 45.7 30-Day Fills standardized to 30-day supplies 1,354 Days of Medication total across all patients in 2023 | |||
| Bupropion XlBupropion Hcl | 42 | $30.62▼ below CA avg | ≈ Typical |
About Bupropion Xl: Bupropion is used to treat depression. Show more ▾ It can improve your mood and feelings of well-being. It may work by helping to restore the balance of certain natural chemicals (neurotransmitters) in your brain. In 2023, this provider wrote 42 Medicare prescriptions for Bupropion Xl, about 1.2 times the volume of the typical California prescriber of this medication (35). Medicare paid an average of $30.62 per fill, versus $40.33 statewide. How often this provider prescribes it This provider's prescribing volume for this medication is in line with the average CA 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 CA average for this medication. 74 30-Day Fills standardized to 30-day supplies 2,220 Days of Medication total across all patients in 2023 | |||
| Aripiprazole | 31 | $366.81 | ▼ Less than typical |
About Aripiprazole: Aripiprazole is used to treat certain mental/mood disorders (such as bipolar disorder, schizophrenia, Tourette's syndrome, and irritability associated with autistic disorder). Show more ▾ It may also be used in combination with other medication to treat depression. Aripiprazole is known as an antipsychotic drug (atypical type). It works by helping to restore the balance of certain natural chemicals in the brain (neurotransmitters). 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. Aripiprazole can treat severe mood swings and decrease how often mood swings occur. A piperazine and quinolone derivative that is used primarily as an antipsychotic agent. It is a partial agonist of SEROTONIN RECEPTOR, 5-HT1A and DOPAMINE D2 RECEPTORS, where it also functions as a post-synaptic antagonist, and an antagonist of SEROTONIN RECEPTOR, 5-HT2A. It is used for the treatment of SCHIZOPHRENIA and BIPOLAR DISORDER, and as an adjunct therapy for the treatment of depression. In 2023, this provider wrote 31 Medicare prescriptions for Aripiprazole, about 67% of the volume of the typical California prescriber of this medication (46). Medicare paid an average of $366.81 per fill, versus $161.50 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average CA 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. 57.1 30-Day Fills standardized to 30-day supplies 1,711 Days of Medication total across all patients in 2023 | |||
| Quetiapine Fumarate | 27 | $48.87 | ▼ Less than typical |
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 27 Medicare prescriptions for Quetiapine Fumarate, about half the volume of the typical California prescriber of this medication (56). Medicare paid an average of $48.87 per fill, versus $39.99 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average CA 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. 35 30-Day Fills standardized to 30-day supplies 1,050 Days of Medication total across all patients in 2023 | |||
| Lamotrigine | 26 | $17.93 | ▼ 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 2023, this provider wrote 26 Medicare prescriptions for Lamotrigine, about 63% of the volume of the typical California prescriber of this medication (41). Medicare paid an average of $17.93 per fill, versus $17.04 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average CA 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. 36 30-Day Fills standardized to 30-day supplies 1,000 Days of Medication total across all patients in 2023 | |||
| Olanzapine | 26 | $57.49 | ▼ Less than typical |
About Olanzapine: Olanzapine is used to treat certain mental/mood conditions (such as schizophrenia, bipolar disorder). Show more ▾ It may also be used in combination with other medication to treat depression. This medication can help to decrease hallucinations and help you to think more clearly and positively about yourself, feel less agitated, and take a more active part in everyday life. Olanzapine belongs to a class of drugs called atypical antipsychotics. It works by helping to restore the balance of certain natural substances in the brain. Talk to the doctor about the risks and benefits of treatment (especially when used by teenagers). See also Precautions section. A benzodiazepine derivative that binds SEROTONIN RECEPTORS; MUSCARINIC RECEPTORS; HISTAMINE H1 RECEPTORS; ADRENERGIC ALPHA-1 RECEPTORS; and DOPAMINE RECEPTORS. It is an antipsychotic agent used in the treatment of SCHIZOPHRENIA; BIPOLAR DISORDER; and MAJOR DEPRESSIVE DISORDER; it may also reduce nausea and vomiting in patients undergoing chemotherapy. In 2023, this provider wrote 26 Medicare prescriptions for Olanzapine, about half the volume of the typical California prescriber of this medication (54). Medicare paid an average of $57.49 per fill, versus $41.60 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average CA 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. 27 30-Day Fills standardized to 30-day supplies 760 Days of Medication total across all patients in 2023 | |||
| Divalproex Sodium | 23 | $164.34 | ▼ Less than typical |
About Divalproex Sodium: This medication is used to treat seizure disorders, certain psychiatric conditions (manic phase of bipolar disorder), and to prevent migraine headaches. Show more ▾ It works by restoring the balance of certain natural substances (neurotransmitters) in the brain. A fatty acid with anticonvulsant and anti-manic properties that is used in the treatment of EPILEPSY and BIPOLAR DISORDER. The mechanisms of its therapeutic actions are not well understood. It may act by increasing GAMMA-AMINOBUTYRIC ACID levels in the brain or by altering the properties of VOLTAGE-GATED SODIUM CHANNELS. In 2023, this provider wrote 23 Medicare prescriptions for Divalproex Sodium, about half the volume of the typical California prescriber of this medication (46). Medicare paid an average of $164.34 per fill, versus $45.51 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average CA 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. 25 30-Day Fills standardized to 30-day supplies 750 Days of Medication total across all patients in 2023 | |||
| Venlafaxine Hcl ErVenlafaxine Hcl | 22 | $20.85▼ below CA avg | ≈ Typical |
About Venlafaxine Hcl Er: Venlafaxine is used to treat depression, anxiety, panic attacks, and social anxiety disorder (social phobia). Show more ▾ It may improve your mood and energy level and may help restore your interest in daily living. It may also decrease fear, anxiety, unwanted thoughts, and the number of panic attacks. Venlafaxine is known as a serotonin-norepinephrine reuptake inhibitor (SNRI). It works by helping to restore the balance of certain natural substances (serotonin and norepinephrine) in the brain. In 2023, this provider wrote 22 Medicare prescriptions for Venlafaxine Hcl Er, about 76% of the volume of the typical California prescriber of this medication (29). Medicare paid an average of $20.85 per fill, versus $30.98 statewide. How often this provider prescribes it This provider's prescribing volume for this medication is in line with the average CA 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 CA average for this medication. 24 30-Day Fills standardized to 30-day supplies 720 Days of Medication total across all patients in 2023 | |||
| Fluoxetine Hcl | 21 | $12.88▼ below CA avg | ▼ Less than typical |
About Fluoxetine Hcl: This long-acting form of fluoxetine is used to treat depression in people who have been successfully treated with the form of fluoxetine that is taken daily. Show more ▾ Fluoxetine is a selective serotonin reuptake inhibitor (SSRI). SSRIs work by helping to restore the balance of certain natural substances in the brain (neurotransmitters such as serotonin). Fluoxetine may decrease anxiety, improve your mood, sleep, appetite, and energy level and may help restore your interest in daily living. The first highly specific serotonin uptake inhibitor. It is used as an antidepressant and often has a more acceptable side-effects profile than traditional antidepressants. In 2023, this provider wrote 21 Medicare prescriptions for Fluoxetine Hcl, about 62% of the volume of the typical California prescriber of this medication (34). Medicare paid an average of $12.88 per fill, versus $15.32 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average CA 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 CA average for this medication. 33.2 30-Day Fills standardized to 30-day supplies 980 Days of Medication total across all patients in 2023 | |||
| Duloxetine Hcl | 19 | $24.64▼ below CA avg | ▼ Less than typical |
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 half the volume of the typical California prescriber of this medication (40). Medicare paid an average of $24.64 per fill, versus $50.41 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average CA 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 CA average for this medication. 35 30-Day Fills standardized to 30-day supplies 1,004 Days of Medication total across all patients in 2023 | |||
| Citalopram HbrCitalopram Hydrobromide | 19 | $15.43 | ▼ Less than typical |
About Citalopram Hbr: Citalopram is used to treat depression. Show more ▾ It may improve your energy level and feelings of well-being. Citalopram is known as a selective serotonin reuptake inhibitor (SSRI). This medication works by helping to restore the balance of a certain natural substance (serotonin) in the brain. A furancarbonitrile that is one of the SELECTIVE SEROTONIN REUPTAKE INHIBITORS used as an antidepressant. The drug is also effective in reducing ethanol uptake in alcoholics and is used in depressed patients who also suffer from TARDIVE DYSKINESIA in preference to tricyclic antidepressants, which aggravate dyskinesia. In 2023, this provider wrote 19 Medicare prescriptions for Citalopram Hbr, about 61% of the volume of the typical California prescriber of this medication (31). Medicare paid an average of $15.43 per fill, versus $9.33 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average CA 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. 27 30-Day Fills standardized to 30-day supplies 810 Days of Medication total across all patients in 2023 | |||
| Trazodone Hcl | 19 | $21.03 | ▼ Less than typical |
About Trazodone Hcl: This medication is used to treat depression. Show more ▾ It may help to improve your mood, appetite, and energy level as well as decrease anxiety and insomnia related to depression. Trazodone works by helping to restore the balance of a certain natural chemical (serotonin) in the brain. In 2023, this provider wrote 19 Medicare prescriptions for Trazodone Hcl, about a third of the volume of the typical California prescriber of this medication (55). Medicare paid an average of $21.03 per fill, versus $13.84 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average CA 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. 21.6 30-Day Fills standardized to 30-day supplies 617 Days of Medication total across all patients in 2023 | |||
| Clonazepam | 18 | $8.45▼ below CA 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 2023, this provider wrote 18 Medicare prescriptions for Clonazepam, about half the volume of the typical California prescriber of this medication (41). Medicare paid an average of $8.45 per fill, versus $9.00 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average CA 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 CA average for this medication. 20 30-Day Fills standardized to 30-day supplies 584 Days of Medication total across all patients in 2023 | |||
| Sertraline Hcl | 17 | $18.95 | ▼ Less than typical |
About Sertraline Hcl: Sertraline is used to treat depression, panic attacks, obsessive compulsive disorder, post-traumatic stress disorder, social anxiety disorder (social phobia), and a severe form of premenstrual syndrome (premenstrual dysphoric disorder). Show more ▾ This medication may improve your mood, sleep, appetite, and energy level and may help restore your interest in daily living. It may decrease fear, anxiety, unwanted thoughts, and the number of panic attacks. It may also reduce the urge to perform repeated tasks (compulsions such as hand-washing, counting, and checking) that interfere with daily living. Sertraline is known as a selective serotonin reuptake inhibitor (SSRI). It works by helping to restore the balance of a certain natural substance (serotonin) in the brain. In 2023, this provider wrote 17 Medicare prescriptions for Sertraline Hcl, about a third of the volume of the typical California prescriber of this medication (45). Medicare paid an average of $18.95 per fill, versus $12.11 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average CA 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. 39 30-Day Fills standardized to 30-day supplies 1,170 Days of Medication total across all patients in 2023 | |||
| Escitalopram Oxalate | 16 | $43.62 | ▼ Less than typical |
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 16 Medicare prescriptions for Escitalopram Oxalate, about a third of the volume of the typical California prescriber of this medication (47). Medicare paid an average of $43.62 per fill, versus $14.32 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average CA 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. 34 30-Day Fills standardized to 30-day supplies 982 Days of Medication total across all patients in 2023 | |||
| Bupropion Hcl SrBupropion Hcl | 15 | $58.92 | ▼ Less than typical |
About Bupropion Hcl Sr: Bupropion is used to treat depression. Show more ▾ It can improve your mood and feelings of well-being. It may work by helping to restore the balance of certain natural chemicals (neurotransmitters) in your brain. In 2023, this provider wrote 15 Medicare prescriptions for Bupropion Hcl Sr, about 63% of the volume of the typical California prescriber of this medication (24). Medicare paid an average of $58.92 per fill, versus $29.04 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average CA 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. 15 30-Day Fills standardized to 30-day supplies 450 Days of Medication total across all patients in 2023 | |||
| Invega SustennaPaliperidone Palmitate | 12 | $2,329.83▼ below CA avg | ▼ Less than typical |
About Invega Sustenna: Paliperidone is used to treat a certain mental/mood disorder called schizophrenia. Show more ▾ This medication can decrease hallucinations, help you to think more clearly and positively about yourself, feel less agitated, and take a more active part in everyday life. Paliperidone is an antipsychotic drug (atypical type). It works by helping to restore the balance of certain natural substances (neurotransmitters) in the brain. This long-acting form of paliperidone is used only after you have received treatment with either the monthly injectable form of this drug for at least 4 months, or the every-3-month injectable form for at least 3 months. A benzisoxazole derivative and active metabolite of RISPERIDONE that functions as a DOPAMINE D2 RECEPTOR ANTAGONIST and SEROTONIN 5-HT2 RECEPTOR ANTAGONIST. It is an ANTIPSYCHOTIC AGENT used in the treatment of SCHIZOPHRENIA. In 2023, this provider wrote 12 Medicare prescriptions for Invega Sustenna, about a third of the volume of the typical California prescriber of this medication (39). Medicare paid an average of $2,329.83 per fill, versus $2,873.52 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average CA 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 CA average for this medication. 12 30-Day Fills standardized to 30-day supplies 338 Days of Medication total across all patients in 2023 | |||
About this data. The prescription history for DR. SHAWNA CHAN 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 Psychiatry prescribing approach at this Los Angeles, CA 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 CA prescribers of the same medication. Always confirm current medications and costs directly with the provider and your plan.
