ROBERT GRENN MD
Prescription History 1366079915
Psychiatry & Neurology - Psychiatry in Caro, MI

NPI Status: Active since March 24, 2020

Contact Information

2040 CHAMBERS RD
CARO, MI
ZIP 48723
Phone: (989) 673-3191

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Prescription History for Informed Healthcare Decisions

Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for ROBERT GRENN MD, an active Psychiatry specialist practicing in Caro, MI. Our medical registry currently tracks 14 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 299 documented patient claims. Among these therapy options, the most frequently utilized medication is Escitalopram Oxalate, which accounts for 39 claims alone.


Abilify Maintena

Generic Formulation: AripiprazoleSpecialty: Psychiatry & Neurology
Provider Metrics Summary
Total Claims 12
30-Day Fills 12.0
Days Supply 360
MI State Average Benchmarks
Peer Average Claims32.0
Peer Average 30-Day Fills32.7
Peer Average Days Supply901
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 62.5% less volume than the regional standard for practitioners inside MI. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $31,792.53 across this reporting matrix range.

Provider Avg Cost Per Claim

$2,649.38

State Avg Cost Per Claim

$2,577.72

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

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.

Therapeutic Applications

Aripiprazole is used to treat certain mental/mood disorders (such as bipolar disorder, schizophrenia, Tourette's syndrome, and irritability associated with autistic disorder). 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.

Aripiprazole

Generic Formulation: AripiprazoleSpecialty: Psychiatry & Neurology
Provider Metrics Summary
Total Claims 19
30-Day Fills 29.0
Days Supply 870
MI State Average Benchmarks
Peer Average Claims46.0
Peer Average 30-Day Fills61.7
Peer Average Days Supply1,790
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 58.7% less volume than the regional standard for practitioners inside MI. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $942.93 across this reporting matrix range.

Provider Avg Cost Per Claim

$49.63

State Avg Cost Per Claim

$122.62

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

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.

Therapeutic Applications

Aripiprazole is used to treat certain mental/mood disorders (such as bipolar disorder, schizophrenia, Tourette's syndrome, and irritability associated with autistic disorder). 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.

Benztropine Mesylate

Generic Formulation: Benztropine MesylateSpecialty: Psychiatry & Neurology
Provider Metrics Summary
Total Claims 13
30-Day Fills 19.0
Days Supply 550
MI State Average Benchmarks
Peer Average Claims65.0
Peer Average 30-Day Fills72.0
Peer Average Days Supply2,014
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 80.0% less volume than the regional standard for practitioners inside MI. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $145.61 across this reporting matrix range.

Provider Avg Cost Per Claim

$11.20

State Avg Cost Per Claim

$12.24

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

A centrally active muscarinic antagonist that has been used in the symptomatic treatment of PARKINSON DISEASE. Benztropine also inhibits the uptake of dopamine.

Therapeutic Applications

Benztropine is used to treat symptoms of Parkinson's disease or involuntary movements due to the side effects of certain psychiatric drugs (antipsychotics such as chlorpromazine/haloperidol). Benztropine belongs to a class of medication called anticholinergics that work by blocking a certain natural substance (acetylcholine). This helps decrease muscle stiffness, sweating, and the production of saliva, and helps improve walking ability in people with Parkinson's disease. Anticholinergics can stop severe muscle spasms of the back, neck, and eyes that are sometimes caused by psychiatric drugs. It can also decrease other side effects such as muscle stiffness/rigidity (extrapyramidal signs-EPS). It is not helpful in treating movement problems caused by tardive dyskinesia and may worsen them. Benztropine should not be used by children younger than 3 years.

Buspirone Hcl

Generic Formulation: Buspirone HclSpecialty: Psychiatry & Neurology
Provider Metrics Summary
Total Claims 17
30-Day Fills 37.0
Days Supply 1,110
MI State Average Benchmarks
Peer Average Claims41.0
Peer Average 30-Day Fills62.3
Peer Average Days Supply1,816
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 58.5% less volume than the regional standard for practitioners inside MI. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $686.45 across this reporting matrix range.

Provider Avg Cost Per Claim

$40.38

State Avg Cost Per Claim

$19.25

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Therapeutic Applications

This medication is used to treat anxiety. It may help you think more clearly, relax, worry less, and take part in everyday life. It may also help you to feel less jittery and irritable, and may control symptoms such as trouble sleeping, sweating, and pounding heartbeat. Buspirone is a medication for anxiety (anxiolytic) that works by affecting certain natural substances in the brain (neurotransmitters).

Duloxetine Hcl

Generic Formulation: Duloxetine HclSpecialty: Psychiatry & Neurology
Provider Metrics Summary
Total Claims 37
30-Day Fills 57.0
Days Supply 1,710
MI State Average Benchmarks
Peer Average Claims50.0
Peer Average 30-Day Fills93.6
Peer Average Days Supply2,765
Conservative Utilization

This provider writes prescriptions for this formulation 26.0% less frequently than the standard regional baseline metric for practitioners inside MI. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $1,095.49 across this reporting matrix range.

Provider Avg Cost Per Claim

$29.61

State Avg Cost Per Claim

$46.83

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

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.

Therapeutic Applications

Duloxetine is used to treat depression and anxiety. 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.

Escitalopram Oxalate

Generic Formulation: Escitalopram OxalateSpecialty: Psychiatry & Neurology
Provider Metrics Summary
Total Claims 39
30-Day Fills 73.0
Days Supply 2,190
MI State Average Benchmarks
Peer Average Claims48.0
Peer Average 30-Day Fills92.5
Peer Average Days Supply2,733
Standard Average Utilization

This provider's prescribing patterns for this therapeutic formulation sit directly in line with standard baseline averages across MI. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $459.56 across this reporting matrix range.

Provider Avg Cost Per Claim

$11.78

State Avg Cost Per Claim

$15.43

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

S-enantiomer of CITALOPRAM. Belongs to a class of drugs known as SELECTIVE SEROTONIN REUPTAKE INHIBITORS, used to treat depression and generalized anxiety disorder.

Therapeutic Applications

Escitalopram is used to treat depression and anxiety. 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.

Fluoxetine Hcl

Generic Formulation: Fluoxetine HclSpecialty: Psychiatry & Neurology
Provider Metrics Summary
Total Claims 16
30-Day Fills 24.5
Days Supply 735
MI State Average Benchmarks
Peer Average Claims37.0
Peer Average 30-Day Fills74.1
Peer Average Days Supply2,196
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 56.8% less volume than the regional standard for practitioners inside MI. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $153.77 across this reporting matrix range.

Provider Avg Cost Per Claim

$9.61

State Avg Cost Per Claim

$16.63

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

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.

Therapeutic Applications

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. 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.

Gabapentin

Generic Formulation: GabapentinSpecialty: Psychiatry & Neurology
Provider Metrics Summary
Total Claims 22
30-Day Fills 24.0
Days Supply 688
MI State Average Benchmarks
Peer Average Claims87.0
Peer Average 30-Day Fills124.3
Peer Average Days Supply3,567
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 74.7% less volume than the regional standard for practitioners inside MI. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $278.08 across this reporting matrix range.

Provider Avg Cost Per Claim

$12.64

State Avg Cost Per Claim

$20.33

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

A cyclohexane-gamma-aminobutyric acid derivative that is used for the treatment of PARTIAL SEIZURES; NEURALGIA; and RESTLESS LEGS SYNDROME.

Therapeutic Applications

Gabapentin is used with other medications to prevent and control seizures. 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.

Hydroxyzine Hcl

Generic Formulation: Hydroxyzine HclSpecialty: Psychiatry & Neurology
Provider Metrics Summary
Total Claims 27
30-Day Fills 31.0
Days Supply 839
MI State Average Benchmarks
Peer Average Claims27.0
Peer Average 30-Day Fills34.4
Peer Average Days Supply908
Standard Average Utilization

This provider's prescribing patterns for this therapeutic formulation sit directly in line with standard baseline averages across MI. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $352.10 across this reporting matrix range.

Provider Avg Cost Per Claim

$13.04

State Avg Cost Per Claim

$19.26

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Therapeutic Applications

Hydroxyzine is used to treat itching caused by allergies. It is an antihistamine and works by blocking a certain natural substance (histamine) that your body makes during an allergic reaction. Hydroxyzine may also be used short-term to treat anxiety or to help you feel sleepy/relaxed before and after surgery.

Lorazepam

Generic Formulation: LorazepamSpecialty: Psychiatry & Neurology
Provider Metrics Summary
Total Claims 12
30-Day Fills 12.0
Days Supply 240
MI State Average Benchmarks
Peer Average Claims41.0
Peer Average 30-Day Fills45.9
Peer Average Days Supply1,153
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 70.7% less volume than the regional standard for practitioners inside MI. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $19.78 across this reporting matrix range.

Provider Avg Cost Per Claim

$1.65

State Avg Cost Per Claim

$8.41

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

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.

Therapeutic Applications

This medication is used to treat serious seizures that do not stop (status epilepticus). 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.

Quetiapine Fumarate

Generic Formulation: Quetiapine FumarateSpecialty: Psychiatry & Neurology
Provider Metrics Summary
Total Claims 11
30-Day Fills 15.0
Days Supply 450
MI State Average Benchmarks
Peer Average Claims58.0
Peer Average 30-Day Fills77.6
Peer Average Days Supply2,224
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 81.0% less volume than the regional standard for practitioners inside MI. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $106.81 across this reporting matrix range.

Provider Avg Cost Per Claim

$9.71

State Avg Cost Per Claim

$30.54

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

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.

Therapeutic Applications

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). 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.

Risperidone

Generic Formulation: RisperidoneSpecialty: Psychiatry & Neurology
Provider Metrics Summary
Total Claims 11
30-Day Fills 17.0
Days Supply 510
MI State Average Benchmarks
Peer Average Claims50.0
Peer Average 30-Day Fills59.5
Peer Average Days Supply1,668
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 78.0% less volume than the regional standard for practitioners inside MI. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $76.84 across this reporting matrix range.

Provider Avg Cost Per Claim

$6.99

State Avg Cost Per Claim

$14.88

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

A selective blocker of DOPAMINE D2 RECEPTORS and SEROTONIN 5-HT2 RECEPTORS that acts as an atypical antipsychotic agent. It has been shown to improve both positive and negative symptoms in the treatment of SCHIZOPHRENIA.

Therapeutic Applications

Risperidone is used to treat a certain mental/mood disorder called schizophrenia. 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. Risperidone is an antipsychotic drug (atypical type). It works by helping to restore the balance of certain natural substances in the brain.

Sertraline Hcl

Generic Formulation: Sertraline HclSpecialty: Psychiatry & Neurology
Provider Metrics Summary
Total Claims 29
30-Day Fills 57.0
Days Supply 1,710
MI State Average Benchmarks
Peer Average Claims60.0
Peer Average 30-Day Fills115.5
Peer Average Days Supply3,399
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 51.7% less volume than the regional standard for practitioners inside MI. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $436.66 across this reporting matrix range.

Provider Avg Cost Per Claim

$15.06

State Avg Cost Per Claim

$12.70

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Therapeutic Applications

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). 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.

Trazodone Hcl

Generic Formulation: Trazodone HclSpecialty: Psychiatry & Neurology
Provider Metrics Summary
Total Claims 34
30-Day Fills 76.0
Days Supply 2,280
MI State Average Benchmarks
Peer Average Claims59.0
Peer Average 30-Day Fills103.7
Peer Average Days Supply3,053
Conservative Utilization

This provider writes prescriptions for this formulation 42.4% less frequently than the standard regional baseline metric for practitioners inside MI. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $377.55 across this reporting matrix range.

Provider Avg Cost Per Claim

$11.10

State Avg Cost Per Claim

$13.20

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Therapeutic Applications

This medication is used to treat depression. 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.

Dataset Methodology & CMS Source Information

This analytical profile maps public infrastructure records sourced directly from official **Centers for Medicare & Medicaid Services (CMS)** public data releases. The statistics above track documented pharmaceutical treatment trends assigned to beneficiaries specifically under federal public programs. Evaluating the prescriptive footprints of clinical practitioners like ROBERT GRENN MD provides transparency into local medical care patterns within Caro, MI.

Key Learning Objectives for this Profile:

  • Prescribing Frequencies: Track and evaluate the volume metrics of specific brand-name and generic medical formulas chosen by this provider over time.
  • Clinical Focus Areas: Identify how the provider distributes therapeutic selections across medical care options to gain insight into their true day-to-day **Psychiatry** practice concentrations.
  • Program Cost Awareness: Review the calculated total systemic drug costs and raw transactional volumes linked to these orders to better anticipate network insurance coverage structures.
  • Patient-Centered Evaluation: Cross-reference localized regional care comparisons to align practitioner habits directly with your proactive health maintenance goals.

Data Scope Exclusion & Limitations: The data elements presented above explicitly reflect prescription orders processed for Medicare beneficiaries during the year 2023. This informational profile does not aggregate prescription data for individuals utilizing private commercial health plans, state Medicaid coverage, or self-pay options. However, because medical decision-making remains highly consistent across clinical settings, this public registry provides a reliable proxy for understanding the general prescribing preferences and pharmaceutical care approach used by this provider.