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MICHAEL TZEN-JEH CHANG MD
Prescription History 1720432016
Otolaryngology in Stanford, CA


Quality Rating: 76.5 out of 100 score

NPI Status: Active since April 22, 2016

Contact Information

300 PASTEUR DR
STANFORD, CA
ZIP 94305
Phone: (650) 723-4000

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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 MICHAEL TZEN-JEH CHANG MD, an active Otolaryngology specialist practicing in Stanford, CA. Our medical registry currently tracks 4 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 103 documented patient claims. Among these therapy options, the most frequently utilized medication is Azelastine Hcl, which accounts for 34 claims alone.

Medication Index

A
I
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No matching medications currently found on file.

Amoxicillin-Clavulanate Potass

Generic Formulation: Amoxicillin/Potassium ClavSpecialty: Otolaryngology
Provider Metrics Summary
Total Claims 11
30-Day Fills 11.0
Days Supply 143
CA State Average Benchmarks
Peer Average Claims23.0
Peer Average 30-Day Fills23.5
Peer Average Days Supply215
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 52.2% 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 $165.39 across this reporting matrix range.

Provider Avg Cost Per Claim

$15.04

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.

Azelastine Hcl

Generic Formulation: Azelastine HclSpecialty: Otolaryngology
Provider Metrics Summary
Total Claims 34
30-Day Fills 39.0
Days Supply 1,012
CA State Average Benchmarks
Peer Average Claims46.0
Peer Average 30-Day Fills63.3
Peer Average Days Supply1,830
Conservative Utilization

This provider writes prescriptions for this formulation 26.1% 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 $1,391.68 across this reporting matrix range.

Provider Avg Cost Per Claim

$40.93

State Avg Cost Per Claim

$42.74

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 relieve nasal symptoms such as runny/itching/stuffy nose, sneezing, and post-nasal drip caused by allergies or other conditions. Azelastine belongs to a class of drugs known as antihistamines. It works by blocking certain natural substances called histamines that are responsible for nasal symptoms.

Ipratropium Bromide

Generic Formulation: Ipratropium BromideSpecialty: Otolaryngology
Provider Metrics Summary
Total Claims 34
30-Day Fills 38.0
Days Supply 868
CA State Average Benchmarks
Peer Average Claims32.0
Peer Average 30-Day Fills48.7
Peer Average Days Supply1,357
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 $947.89 across this reporting matrix range.

Provider Avg Cost Per Claim

$27.88

State Avg Cost Per Claim

$48.84

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 muscarinic antagonist structurally related to ATROPINE but often considered safer and more effective for inhalation use. It is used for various bronchial disorders, in rhinitis, and as an antiarrhythmic.

Therapeutic Applications

Ipratropium is used to control and prevent symptoms (wheezing and shortness of breath) caused by ongoing lung disease (chronic obstructive pulmonary disease-COPD which includes bronchitis and emphysema). It works by relaxing the muscles around the airways so that they open up and you can breathe more easily. Controlling symptoms of breathing problems can decrease time lost from work or school. For preventing symptoms of lung disease, this medication must be used regularly to be effective. Use your quick-relief inhaler (such as albuterol, also called salbutamol in some countries) for wheezing or sudden shortness of breath unless otherwise directed by your doctor. Ipratropium does not work as fast as your quick-relief inhaler, but may sometimes be used to relieve symptoms of wheezing or sudden shortness of breath if so prescribed by your doctor.

Mupirocin

Generic Formulation: MupirocinSpecialty: Otolaryngology
Provider Metrics Summary
Total Claims 24
30-Day Fills 26.0
Days Supply 570
CA State Average Benchmarks
Peer Average Claims31.0
Peer Average 30-Day Fills31.7
Peer Average Days Supply592
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 $237.37 across this reporting matrix range.

Provider Avg Cost Per Claim

$9.89

State Avg Cost Per Claim

$10.85

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 topically used antibiotic from a strain of Pseudomonas fluorescens. It has shown excellent activity against gram-positive staphylococci and streptococci. The antibiotic is used primarily for the treatment of primary and secondary skin disorders, nasal infections, and wound healing.

Therapeutic Applications

Mupirocin is used to treat certain skin infections (such as impetigo). It is an antibiotic. It works by stopping the growth of certain bacteria.

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 MICHAEL TZEN-JEH CHANG MD provides transparency into local medical care patterns within Stanford, 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 **Otolaryngology** 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.