CHUAN-JAY J CHEN MD
Prescription History 1205366457
Emergency Medicine in Saint Helena, CA


Quality Rating: 94.93 out of 100 score

NPI Status: Active since June 19, 2017

Contact Information

10 WOODLAND RD
SAINT HELENA, CA
ZIP 94574
Phone: (707) 963-6425

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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 CHUAN-JAY J CHEN MD, an active Emergency Medicine specialist practicing in Saint Helena, CA. Our medical registry currently tracks 11 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 193 documented patient claims. Among these therapy options, the most frequently utilized medication is Cefdinir, which accounts for 38 claims alone.


Amoxicillin-Clavulanate Potass

Generic Formulation: Amoxicillin/Potassium ClavSpecialty: Emergency Medicine
Provider Metrics Summary
Total Claims 18
30-Day Fills 18.0
Days Supply 125
CA State Average Benchmarks
Peer Average Claims23.0
Peer Average 30-Day Fills23.5
Peer Average Days Supply215
Standard Average Utilization

This provider's prescribing patterns for this therapeutic formulation sit directly in line with standard baseline averages across CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $206.50 across this reporting matrix range.

Provider Avg Cost Per Claim

$11.47

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.

Clinical Summary

A fixed-ratio combination of amoxicillin trihydrate and potassium clavulanate.

Therapeutic Applications

Amoxicillin/clavulanic acid is a combination penicillin-type antibiotic used to treat a wide variety of bacterial infections. It works by stopping the growth of bacteria. This antibiotic treats only bacterial infections. It will not work for viral infections (such as common cold, flu). Using any antibiotic when it is not needed can cause it to not work for future infections.

Azithromycin

Generic Formulation: AzithromycinSpecialty: Emergency Medicine
Provider Metrics Summary
Total Claims 11
30-Day Fills 11.0
Days Supply 54
CA State Average Benchmarks
Peer Average Claims38.0
Peer Average 30-Day Fills39.6
Peer Average Days Supply270
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 71.1% less volume than the regional standard for practitioners inside CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $39.22 across this reporting matrix range.

Provider Avg Cost Per Claim

$3.57

State Avg Cost Per Claim

$7.94

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 semi-synthetic macrolide antibiotic structurally related to ERYTHROMYCIN. It has been used in the treatment of Mycobacterium avium intracellulare infections, toxoplasmosis, and cryptosporidiosis.

Therapeutic Applications

This medication is used to treat certain eye infections. It is a macrolide antibiotic that works by stopping the growth of bacteria. This medication treats only bacterial eye infections. It will not work for other types of eye infections. Unnecessary use or misuse of any antibiotic can lead to its decreased effectiveness.

Cefadroxil

Generic Formulation: CefadroxilSpecialty: Emergency Medicine
Provider Metrics Summary
Total Claims 13
30-Day Fills 13.0
Days Supply 88
CA State Average Benchmarks
Peer Average Claims24.0
Peer Average 30-Day Fills25.0
Peer Average Days Supply212
Conservative Utilization

This provider writes prescriptions for this formulation 45.8% less frequently than the standard regional baseline metric for practitioners inside CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $116.61 across this reporting matrix range.

Provider Avg Cost Per Claim

$8.97

State Avg Cost Per Claim

$11.02

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

Long-acting, broad-spectrum, water-soluble, CEPHALEXIN derivative.

Therapeutic Applications

This medication is used to treat a wide variety of bacterial infections. It belongs to a class of drugs known as cephalosporin antibiotics. It works by stopping the growth of bacteria. This antibiotic treats only bacterial infections. It will not work for viral infections (such as common cold, flu). Using any antibiotic when it is not needed can cause it to not work for future infections.

Cefdinir

Generic Formulation: CefdinirSpecialty: Emergency Medicine
Provider Metrics Summary
Total Claims 38
30-Day Fills 38.0
Days Supply 327
CA State Average Benchmarks
Peer Average Claims26.0
Peer Average 30-Day Fills26.6
Peer Average Days Supply220
Elevated Utilization

This provider maintains an active emphasis on this therapeutic option, recording 46.2% more claims than the standard regional baseline profile for CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $808.95 across this reporting matrix range.

Provider Avg Cost Per Claim

$21.29

State Avg Cost Per Claim

$20.30

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 third-generation oral cephalosporin antibacterial agent that is used to treat bacterial infections of the respiratory tract and skin.

Therapeutic Applications

Cefdinir is used to treat a wide variety of bacterial infections. This medication is known as a cephalosporin antibiotic. It works by stopping the growth of bacteria. This antibiotic treats only bacterial infections. It will not work for viral infections (such as common cold, flu). Using any antibiotic when it is not needed can cause it to not work for future infections.

Nitrofurantoin Mono-Macro

Generic Formulation: Nitrofurantoin Monohyd/M-CrystSpecialty: Emergency Medicine
Provider Metrics Summary
Total Claims 13
30-Day Fills 13.0
Days Supply 67
CA State Average Benchmarks
Peer Average Claims24.0
Peer Average 30-Day Fills25.9
Peer Average Days Supply240
Conservative Utilization

This provider writes prescriptions for this formulation 45.8% less frequently than the standard regional baseline metric for practitioners inside CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $186.57 across this reporting matrix range.

Provider Avg Cost Per Claim

$14.35

State Avg Cost Per Claim

$23.79

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 an antibiotic used to treat bladder infections (acute cystitis). It works by stopping the growth of bacteria. This antibiotic treats only bacterial infections. It will not work for viral infections (such as common cold, flu). Using any antibiotic when it is not needed can cause it to not work for future infections. This medication should not be used in infants younger than 1 month old (see also Precautions section). This drug should not be used to treat infections outside the bladder (including kidney infections such as pyelonephritis or perinephric abscesses).

Ondansetron Odt

Generic Formulation: OndansetronSpecialty: Emergency Medicine
Provider Metrics Summary
Total Claims 29
30-Day Fills 29.0
Days Supply 142
CA State Average Benchmarks
Peer Average Claims22.0
Peer Average 30-Day Fills23.3
Peer Average Days Supply245
Elevated Utilization

This provider maintains an active emphasis on this therapeutic option, recording 31.8% more claims than the standard regional baseline profile for CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $185.35 across this reporting matrix range.

Provider Avg Cost Per Claim

$6.39

State Avg Cost Per Claim

$21.79

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 competitive serotonin type 3 receptor antagonist. It is effective in the treatment of nausea and vomiting caused by cytotoxic chemotherapy drugs, including cisplatin, and has reported anxiolytic and neuroleptic properties.

Therapeutic Applications

This medication is used alone or with other medications to prevent nausea and vomiting caused by cancer drug treatment (chemotherapy) and radiation therapy. It is also used to prevent and treat nausea and vomiting after surgery. Ondansetron works by blocking one of the body's natural substances (serotonin) that causes vomiting.

Oxycodone Hcl

Generic Formulation: Oxycodone HclSpecialty: Emergency Medicine
Provider Metrics Summary
Total Claims 13
30-Day Fills 13.0
Days Supply 28
CA State Average Benchmarks
Peer Average Claims42.0
Peer Average 30-Day Fills42.9
Peer Average Days Supply831
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 69.0% less volume than the regional standard for practitioners inside CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $39.00 across this reporting matrix range.

Provider Avg Cost Per Claim

$3.00

State Avg Cost Per Claim

$25.37

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 semisynthetic derivative of CODEINE.

Therapeutic Applications

This medication is used to help relieve moderate to severe pain. 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.

Pantoprazole Sodium

Generic Formulation: Pantoprazole SodiumSpecialty: Emergency Medicine
Provider Metrics Summary
Total Claims 15
30-Day Fills 15.0
Days Supply 304
CA State Average Benchmarks
Peer Average Claims62.0
Peer Average 30-Day Fills125.5
Peer Average Days Supply3,693
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 75.8% less volume than the regional standard for practitioners inside CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $96.03 across this reporting matrix range.

Provider Avg Cost Per Claim

$6.40

State Avg Cost Per Claim

$16.94

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

2-pyridinylmethylsulfinylbenzimidazole proton pump inhibitor that is used in the treatment of GASTROESOPHAGEAL REFLUX and PEPTIC ULCER.

Therapeutic Applications

Pantoprazole is used to treat certain stomach and esophagus problems (such as acid reflux). It works by decreasing the amount of acid your stomach makes. This medication relieves symptoms such as heartburn, difficulty swallowing, and cough. It helps heal acid damage to the stomach and esophagus, helps prevent ulcers, and may help prevent cancer of the esophagus. Pantoprazole belongs to a class of drugs known as proton pump inhibitors (PPIs).

Paxlovid (Eua)

Generic Formulation: Nirmatrelvir/RitonavirSpecialty: Emergency Medicine
Provider Metrics Summary
Total Claims 12
30-Day Fills 12.0
Days Supply 60
CA State Average Benchmarks
Peer Average Claims24.0
Peer Average 30-Day Fills24.7
Peer Average Days Supply125
Conservative Utilization

This provider writes prescriptions for this formulation 50.0% less frequently than the standard regional baseline metric for practitioners inside CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $130.00 across this reporting matrix range.

Provider Avg Cost Per Claim

$10.83

State Avg Cost Per Claim

$11.70

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

The combination of nirmatrelvir tablets and ritonavir tablets is a product that the FDA is allowing to be given for emergency use to treat COVID-19. The product is also approved to be used in Canada to treat COVID-19. It is used by people who have recently tested positive for coronavirus, have had mild to moderate symptoms for no more than 5 days and are not hospitalized. To receive this product you must also be at high risk for COVID-19 complications due to older age, obesity, or ongoing medical conditions (such as lung or heart disease or diabetes, among others). Talk to your doctor about the risks and benefits of treatment with nirmatrelvir and ritonavir. Nirmatrelvir is a SARS-CoV-2 main protease inhibitor. It works by preventing the growth of the virus that causes COVID-19. Ritonavir increases (boosts) the levels of nirmatrelvir. This helps nirmatrelvir work better. More information about nirmatrelvir and ritonavir is available from the FDA Fact Sheet for Patients, Parents, and Caregivers for Emergency Use and from the Health Canada Patient Medication Information sheet. There is limited information about how safe and effective the combination of nirmatrelvir and ritonavir is for treating COVID-19. Study results show that nirmatrelvir and ritonavir may help people who have recently tested positive for coronavirus stay out of the hospital. This product is not for use by people who are hospitalized due to COVID-19. The information in this document reflects emerging data, which is evolving and subject to reassessment. Users should be aware of these considerations in their review of nirmatrelvir and ritonavir, and it is always the responsibility of treating practitioners to exercise independent judgement in making care decisions.

Prednisone

Generic Formulation: PrednisoneSpecialty: Emergency Medicine
Provider Metrics Summary
Total Claims 15
30-Day Fills 15.0
Days Supply 134
CA State Average Benchmarks
Peer Average Claims40.0
Peer Average 30-Day Fills52.2
Peer Average Days Supply1,075
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 CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $73.16 across this reporting matrix range.

Provider Avg Cost Per Claim

$4.88

State Avg Cost Per Claim

$8.18

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 synthetic anti-inflammatory glucocorticoid derived from CORTISONE. It is biologically inert and converted to PREDNISOLONE in the liver.

Therapeutic Applications

Prednisone is used to treat conditions such as arthritis, blood disorders, breathing problems, severe allergies, skin diseases, cancer, eye problems, and immune system disorders. Prednisone belongs to a class of drugs known as corticosteroids. It decreases your immune system's response to various diseases to reduce symptoms such as swelling and allergic-type reactions.

Sulfamethoxazole-Trimethoprim

Generic Formulation: Sulfamethoxazole/TrimethoprimSpecialty: Emergency Medicine
Provider Metrics Summary
Total Claims 16
30-Day Fills 16.0
Days Supply 124
CA State Average Benchmarks
Peer Average Claims25.0
Peer Average 30-Day Fills27.8
Peer Average Days Supply371
Conservative Utilization

This provider writes prescriptions for this formulation 36.0% less frequently than the standard regional baseline metric for practitioners inside CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $97.14 across this reporting matrix range.

Provider Avg Cost Per Claim

$6.07

State Avg Cost Per Claim

$5.87

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 drug combination with broad-spectrum antibacterial activity against both gram-positive and gram-negative organisms. It is effective in the treatment of many infections, including PNEUMOCYSTIS PNEUMONIA in AIDS.

Therapeutic Applications

This medication is a combination of two antibiotics: sulfamethoxazole and trimethoprim. It is used to treat a wide variety of bacterial infections (such as middle ear, urine, respiratory, and intestinal infections). It is also used to prevent and treat a certain type of pneumonia (pneumocystis-type). This medication should not be used by children less than 2 months of age due to the risk of serious side effects. This medication treats only certain types of infections. It will not work for viral infections (such as flu). Unnecessary use or misuse of any antibiotic can lead to its decreased effectiveness.

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 CHUAN-JAY J CHEN MD provides transparency into local medical care patterns within Saint Helena, CA.

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 **Emergency Medicine** 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.