Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MICHAEL JEFFREY ZIZMOR
Prescription History 1124395421
Psychiatry & Neurology - Psychiatry in Berkeley, CA

Active since November 30, 2011PECOS EnrolledAccepts Medicare Assignment
1935A ADDISON ST STE 200, BERKELEY, CA 94704(888) 460-2343 Get Directions

NPPES record last updated: August 14, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Aug 14, 2026, Oct 21, 2021 (2 updates tracked since 2021).

Medicare Part D Prescription History

Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for DR. MICHAEL JEFFREY ZIZMOR, an active Psychiatry specialist practicing in Berkeley, CA. Our medical registry currently tracks 18 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 521 documented patient claims. Among these therapy options, the most frequently utilized medication is Clonazepam, which accounts for 72 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.

18
Medications
521
Total Claims
537
30-Day Fills
Clonazepam
Most Prescribed · 72 claims
View details
18 medications · 2023 Medicare Part D
Medicare Part D medications prescribed by DR. MICHAEL JEFFREY ZIZMOR in 2023, with prescription volumes, average cost per fill, and CA state comparisons
Medication Prescriptions (2023)Rx (2023) Avg Cost per FillCost / Fill Vs. Other CA PrescribersVs. CA Avg

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 72 Medicare prescriptions for Clonazepam, about 1.8 times the volume of the typical California prescriber of this medication (41). Medicare paid an average of $11.50 per fill, versus $9.00 statewide.

How often this provider prescribes it

This provider
72
CA average
41.0

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
$11.50
CA average
$9.00

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

72
30-Day Fills
standardized to 30-day supplies
2,081
Days of Medication
total across all patients in 2023

About Dextroamphetamine-Amphetamine: This combination medication is used to treat attention deficit hyperactivity disorder - ADHD. Show more ▾

It works by changing the amounts of certain natural substances in the brain. Amphetamine/dextroamphetamine belongs to a class of drugs known as stimulants. It can help increase your ability to pay attention, stay focused on an activity, and control behavior problems. It may also help you to organize your tasks and improve listening skills. This drug is also used to treat a certain sleeping disorder (narcolepsy) to help you stay awake during the day. It should not be used to treat tiredness or to hold off sleep in people who do not have a sleep disorder.

In 2023, this provider wrote 60 Medicare prescriptions for Dextroamphetamine-Amphetamine, about 2.4 times the volume of the typical California prescriber of this medication (25). Medicare paid an average of $30.59 per fill, versus $39.98 statewide.

How often this provider prescribes it

This provider
60
CA average
25.0

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
$30.59
CA average
$39.98

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

60
30-Day Fills
standardized to 30-day supplies
1,745
Days of Medication
total across all patients in 2023

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 49 Medicare prescriptions for Lorazepam, about the same volume as the typical California prescriber of this medication (45). Medicare paid an average of $9.46 per fill, versus $7.40 statewide.

How often this provider prescribes it

This provider
49
CA average
45.0

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
$9.46
CA average
$7.40

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

49
30-Day Fills
standardized to 30-day supplies
1,387
Days of Medication
total across all patients in 2023

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 42 Medicare prescriptions for Trazodone Hcl, about 76% of the volume of the typical California prescriber of this medication (55). Medicare paid an average of $9.41 per fill, versus $13.84 statewide.

How often this provider prescribes it

This provider
42
CA average
55.0

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
$9.41
CA average
$13.84

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

44
30-Day Fills
standardized to 30-day supplies
1,320
Days of Medication
total across all patients in 2023

About Dextroamphetamine-Amphet Er: This combination medication is used to treat attention deficit hyperactivity disorder - ADHD. Show more ▾

It works by changing the amounts of certain natural substances in the brain. Amphetamine/dextroamphetamine belongs to a class of drugs known as stimulants. It can help increase your ability to pay attention, stay focused on an activity, and control behavior problems. It may also help you to organize your tasks and improve listening skills. This drug is also used to treat a certain sleeping disorder (narcolepsy) to help you stay awake during the day. It should not be used to treat tiredness or to hold off sleep in people who do not have a sleep disorder.

In 2023, this provider wrote 32 Medicare prescriptions for Dextroamphetamine-Amphet Er, about 1.5 times the volume of the typical California prescriber of this medication (21). Medicare paid an average of $47.06 per fill, versus $69.16 statewide.

How often this provider prescribes it

This provider
32
CA average
21.0

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
$47.06
CA average
$69.16

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

32
30-Day Fills
standardized to 30-day supplies
923
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 31 Medicare prescriptions for Quetiapine Fumarate, about half the volume of the typical California prescriber of this medication (56). Medicare paid an average of $62.73 per fill, versus $39.99 statewide.

How often this provider prescribes it

This provider
31
CA average
56.0

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
$62.73
CA average
$39.99

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

31
30-Day Fills
standardized to 30-day supplies
930
Days of Medication
total across all patients in 2023

About Hydrocodone-Acetaminophen: This combination medication is used to relieve moderate to severe pain. Show more ▾

It contains an opioid pain reliever (hydrocodone) and a non-opioid pain reliever (acetaminophen). Hydrocodone works in the brain to change how your body feels and responds to pain. Acetaminophen can also reduce a fever.

In 2023, this provider wrote 31 Medicare prescriptions for Hydrocodone-Acetaminophen, about a third of the volume of the typical California prescriber of this medication (79). Medicare paid an average of $25.98 per fill, versus $22.00 statewide.

How often this provider prescribes it

This provider
31
CA average
79.0

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
$25.98
CA average
$22.00

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

31
30-Day Fills
standardized to 30-day supplies
626
Days of Medication
total across all patients in 2023

About Buprenorphine-Naloxone: This medication contains 2 medicines: buprenorphine and naloxone. Show more ▾

It is used to treat opioid dependence/addiction. Buprenorphine belongs to a class of drugs called mixed opioid agonist-antagonists. Buprenorphine helps prevent withdrawal symptoms caused by stopping other opioids. Naloxone is an opioid antagonist that blocks the effect of opioids and can cause severe opioid withdrawal when injected. It has little effect when taken by mouth or dissolved under the tongue. It is combined with buprenorphine to prevent abuse and misuse (injection) of this medication. This combination medication is used as part of a complete treatment program for drug abuse (such as compliance monitoring, counseling, behavioral contract, lifestyle changes). Ask your doctor or pharmacist if you should have other forms of naloxone available to treat opioid overdose. Teach your family or household members about the signs of an opioid overdose and how to treat it.

In 2023, this provider wrote 25 Medicare prescriptions for Buprenorphine-Naloxone, about 61% of the volume of the typical California prescriber of this medication (41). Medicare paid an average of $118.79 per fill, versus $199.04 statewide.

How often this provider prescribes it

This provider
25
CA average
41.0

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
$118.79
CA average
$199.04

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

25
30-Day Fills
standardized to 30-day supplies
724
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 half the volume of the typical California prescriber of this medication (47). Medicare paid an average of $22.80 per fill, versus $14.32 statewide.

How often this provider prescribes it

This provider
25
CA average
47.0

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
$22.80
CA average
$14.32

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

29
30-Day Fills
standardized to 30-day supplies
861
Days of Medication
total across all patients in 2023

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 2023, this provider wrote 24 Medicare prescriptions for Gabapentin, about a third of the volume of the typical California prescriber of this medication (81). Medicare paid an average of $32.77 per fill, versus $21.28 statewide.

How often this provider prescribes it

This provider
24
CA average
81.0

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
$32.77
CA average
$21.28

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

24
30-Day Fills
standardized to 30-day supplies
720
Days of Medication
total across all patients in 2023

About Baclofen: Baclofen is used to treat muscle spasms caused by certain conditions (such as multiple sclerosis, spinal cord injury/disease). Show more ▾

It works by helping to relax the muscles. A GAMMA-AMINOBUTYRIC ACID derivative that is a specific agonist of GABA-B RECEPTORS. It is used in the treatment of MUSCLE SPASTICITY, especially that due to SPINAL CORD INJURIES. Its therapeutic effects result from actions at spinal and supraspinal sites, generally the reduction of excitatory transmission.

In 2023, this provider wrote 24 Medicare prescriptions for Baclofen, about half the volume of the typical California prescriber of this medication (41). Medicare paid an average of $51.76 per fill, versus $28.61 statewide.

How often this provider prescribes it

This provider
24
CA average
41.0

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
$51.76
CA average
$28.61

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

26
30-Day Fills
standardized to 30-day supplies
780
Days of Medication
total across all patients in 2023

About Alprazolam: Alprazolam is used to treat anxiety and panic disorders. Show more ▾

It belongs to a class of medications called benzodiazepines which act on the brain and nerves (central nervous system) to produce a calming effect. It works by enhancing the effects of a certain natural chemical in the body (GABA). A triazolobenzodiazepine compound with antianxiety and sedative-hypnotic actions, that is efficacious in the treatment of PANIC DISORDERS, with or without AGORAPHOBIA, and in generalized ANXIETY DISORDERS. (From AMA Drug Evaluations Annual, 1994, p238)

In 2023, this provider wrote 21 Medicare prescriptions for Alprazolam, about a third of the volume of the typical California prescriber of this medication (51). Medicare paid an average of $18.07 per fill, versus $8.68 statewide.

How often this provider prescribes it

This provider
21
CA average
51.0

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
$18.07
CA average
$8.68

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

21
30-Day Fills
standardized to 30-day supplies
630
Days of Medication
total across all patients in 2023

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 17 Medicare prescriptions for Bupropion Xl, about half the volume of the typical California prescriber of this medication (35). Medicare paid an average of $28.89 per fill, versus $40.33 statewide.

How often this provider prescribes it

This provider
17
CA average
35.0

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
$28.89
CA average
$40.33

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

25
30-Day Fills
standardized to 30-day supplies
734
Days of Medication
total across all patients in 2023

About Acetaminophen-Codeine: See also Warning section. Show more ▾

This combination medication is used to help relieve mild to moderate pain. It contains an opioid pain reliever (codeine) and a non-opioid pain reliever (acetaminophen). Codeine works in the brain to change how your body feels and responds to pain. Acetaminophen can also reduce a fever.

In 2023, this provider wrote 16 Medicare prescriptions for Acetaminophen-Codeine, about half the volume of the typical California prescriber of this medication (30). Medicare paid an average of $23.08 per fill, versus $16.10 statewide.

How often this provider prescribes it

This provider
16
CA average
30.0

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
$23.08
CA average
$16.10

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

16
30-Day Fills
standardized to 30-day supplies
416
Days of Medication
total across all patients in 2023

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 2023, this provider wrote 15 Medicare prescriptions for Oxycodone Hcl, about a third of the volume of the typical California prescriber of this medication (42). Medicare paid an average of $23.07 per fill, versus $25.37 statewide.

How often this provider prescribes it

This provider
15
CA average
42.0

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
$23.07
CA average
$25.37

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

15
30-Day Fills
standardized to 30-day supplies
418
Days of Medication
total across all patients in 2023

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 13 Medicare prescriptions for Venlafaxine Hcl Er, about half the volume of the typical California prescriber of this medication (29). Medicare paid an average of $11.65 per fill, versus $30.98 statewide.

How often this provider prescribes it

This provider
13
CA average
29.0

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
$11.65
CA average
$30.98

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

13
30-Day Fills
standardized to 30-day supplies
370
Days of Medication
total across all patients in 2023

About Quetiapine Fumarate Er: 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 12 Medicare prescriptions for Quetiapine Fumarate Er, about a third of the volume of the typical California prescriber of this medication (29). Medicare paid an average of $67.01 per fill, versus $165.12 statewide.

How often this provider prescribes it

This provider
12
CA average
29.0

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
$67.01
CA average
$165.12

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

12
30-Day Fills
standardized to 30-day supplies
360
Days of Medication
total across all patients in 2023

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 12 Medicare prescriptions for Olanzapine, about a quarter of the volume of the typical California prescriber of this medication (54). Medicare paid an average of $56.42 per fill, versus $41.60 statewide.

How often this provider prescribes it

This provider
12
CA average
54.0

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
$56.42
CA average
$41.60

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

12
30-Day Fills
standardized to 30-day supplies
360
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 CA prescriber of the same medication; volume reflects practice size as well as clinical preference.Green cost= below the CA average cost per fill.

About this data. The prescription history for DR. MICHAEL JEFFREY ZIZMOR 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 Berkeley, 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.