CHYH WOEI LEE MD
Prescription History 1871574400
Allergy & Immunology in Fremont, CA
What does Dr. Lee prescribe?
In 2024, Dr. Lee wrote 728 Medicare prescriptions for 21 medications. The most prescribed was Montelukast Sodium, with 139 prescriptions for 46 patients.
Medicare Part D only. These are prescriptions filled by people with Medicare drug coverage in 2024, from the CMS data released in 2026, the most recent year available. CMS does not publish medications with fewer than 11 prescriptions, so this is not a full list of what Dr. Lee prescribes.
Medications 21 medications
Prescriptions filled under Medicare Part D in 2024. Select a medication to see what it is used for and how it compares with other California prescribers.
What it is used for
Montelukast is used to control and prevent symptoms caused by asthma (such as wheezing and shortness of breath).
Compared with California prescribers
Dr. Lee wrote 139 prescriptions for Montelukast Sodium, about 2.9 times as often as the typical California prescriber of it (49). Medicare paid $11.71 per fill, versus $10.71 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Diphenhydramine injection is an antihistamine used to treat life-threatening allergic reactions (anaphylaxis) along with epinephrine and other treatments.
Compared with California prescribers
Dr. Lee wrote 88 prescriptions for Diphenhydramine Hcl, about 3.1 times as often as the typical California prescriber of it (29). Medicare paid $66.68 per fill, versus $20.23 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
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.
Compared with California prescribers
Dr. Lee wrote 65 prescriptions for Azelastine Hcl, about 1.4 times as often as the typical California prescriber of it (47). Medicare paid $34.04 per fill, versus $22.82 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Albuterol (also known as salbutamol) is used to prevent and treat wheezing and shortness of breath caused by breathing problems (such as asthma, chronic obstructive pulmonary disease).
Compared with California prescribers
Dr. Lee wrote 63 prescriptions for Albuterol Sulfate Hfa, about as often as the typical California prescriber of it (58). Medicare paid $38.18 per fill, versus $28.70 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Famotidine is used to treat ulcers of the stomach and intestines and to prevent intestinal ulcers from coming back after they have healed.
Compared with California prescribers
Dr. Lee wrote 47 prescriptions for Famotidine, about 1.5 times as often as the typical California prescriber of it (31). Medicare paid $24.37 per fill, versus $7.01 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This product is used to control and prevent symptoms (wheezing and shortness of breath) caused by asthma.
Compared with California prescribers
Dr. Lee wrote 43 prescriptions for Advair Hfa, about 2 times as often as the typical California prescriber of it (21). Medicare paid $695.97 per fill, versus $440.07 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This product is used to control and prevent symptoms (such as wheezing and shortness of breath) caused by asthma and ongoing lung disease (chronic obstructive pulmonary disease-COPD, which includes chronic bronchitis and emphysema).
Compared with California prescribers
Dr. Lee wrote 34 prescriptions for Trelegy Ellipta, about half as often as the typical California prescriber of it (57). Medicare paid $1,215.53 per fill, versus $801.62 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat certain skin conditions (eczema, prurigo nodularis) and a certain esophagus problem (eosinophilic esophagitis).
Compared with California prescribers
Dr. Lee wrote 33 prescriptions for Dupixent Syringe, about 1.3 times as often as the typical California prescriber of it (25). Medicare paid $4,230.83 per fill, versus $3,840.57 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Ipratropium is used to treat a runny nose caused by the common cold or seasonal allergies.
Compared with California prescribers
Dr. Lee wrote 28 prescriptions for Ipratropium Bromide, about 80% as often as the typical California prescriber of it (35). Medicare paid $23.20 per fill, versus $31.19 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat certain allergic eye conditions (vernal keratoconjunctivitis, vernal conjunctivitis, vernal keratitis).
Compared with California prescribers
Dr. Lee wrote 25 prescriptions for Cromolyn Sodium, about 77% as often as the typical California prescriber of it (33). Medicare paid $180.89 per fill, versus $67.27 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used in emergencies to treat very serious allergic reactions to insect stings/bites, foods, drugs, or other substances.
Compared with California prescribers
Dr. Lee wrote 22 prescriptions for Epinephrine, about as often as the typical California prescriber of it (22). Medicare paid $148.04 per fill, versus $184.44 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Levalbuterol is used to prevent and treat wheezing and shortness of breath caused by breathing problems (such as asthma, chronic obstructive pulmonary disease).
Compared with California prescribers
Dr. Lee wrote 18 prescriptions for Levalbuterol Tartrate Hfa, about as often as the typical California prescriber of it (19). Medicare paid $101.84 per fill, versus $63.73 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Famotidine is used to treat ulcers of the stomach and intestines and to prevent intestinal ulcers from coming back after they have healed.
Compared with California prescribers
Dr. Lee wrote 17 prescriptions for Famotidine, about 32% as often as the typical California prescriber of it (54). Medicare paid $7.37 per fill, versus $12.66 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Prednisone is used to treat conditions such as arthritis, blood disorders, breathing problems, severe allergies, skin diseases, cancer, eye problems, and immune system disorders.
Compared with California prescribers
Dr. Lee wrote 17 prescriptions for Prednisone, about half as often as the typical California prescriber of it (40). Medicare paid $4.07 per fill, versus $5.64 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Levocetirizine is an antihistamine used to relieve allergy symptoms such as watery eyes, runny nose, itching eyes/nose, and sneezing.
Compared with California prescribers
Dr. Lee wrote 16 prescriptions for Levocetirizine Dihydrochloride, about 30% as often as the typical California prescriber of it (54). Medicare paid $16.17 per fill, versus $10.77 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This product is used to control and prevent symptoms (wheezing and shortness of breath) caused by asthma or ongoing lung disease (chronic obstructive pulmonary disease-COPD, which includes chronic bronchitis and emphysema).
Compared with California prescribers
Dr. Lee wrote 14 prescriptions for Wixela Inhub, about half as often as the typical California prescriber of it (27). Medicare paid $82.73 per fill, versus $186.48 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This product is used to control and prevent symptoms (such as wheezing and shortness of breath) caused by ongoing lung disease (chronic obstructive pulmonary disease-COPD, which includes chronic bronchitis and emphysema).
Compared with California prescribers
Dr. Lee wrote 13 prescriptions for Breztri Aerosphere, about 32% as often as the typical California prescriber of it (40). Medicare paid $1,111.16 per fill, versus $742.95 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This product is used to control and prevent symptoms (wheezing and shortness of breath) caused by asthma or ongoing lung disease (chronic obstructive pulmonary disease-COPD, which includes chronic bronchitis and emphysema).
Compared with California prescribers
Dr. Lee wrote 13 prescriptions for Symbicort, about half as often as the typical California prescriber of it (22). Medicare paid $315.56 per fill, versus $301.30 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This product is used to control and prevent symptoms (wheezing and shortness of breath) caused by asthma or ongoing lung disease (chronic obstructive pulmonary disease-COPD, which includes chronic bronchitis and emphysema).
Compared with California prescribers
Dr. Lee wrote 11 prescriptions for Breyna, about 40% as often as the typical California prescriber of it (27). Medicare paid $135.08 per fill, versus $216.66 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Beclomethasone is used to prevent and control symptoms (wheezing and shortness of breath) caused by asthma.
Compared with California prescribers
Dr. Lee wrote 11 prescriptions for Qvar Redihaler, about half as often as the typical California prescriber of it (19). Medicare paid $748.69 per fill, versus $303.27 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Tiotropium is used to treat lung diseases such as asthma and COPD (bronchitis, emphysema).
Compared with California prescribers
Dr. Lee wrote 11 prescriptions for Spiriva Respimat, about 36% as often as the typical California prescriber of it (31). Medicare paid $1,579.85 per fill, versus $597.16 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
Questions about Dr. Lee’s prescriptions
What does Dr. Lee prescribe most?
In 2024 Medicare Part D data, Dr. Lee's most prescribed medications were Montelukast Sodium (139), Diphenhydramine Hcl (88) and Azelastine Hcl (65).
How does Dr. Lee's prescribing compare with other California prescribers?
Of the 21 medications with a state comparison, Dr. Lee prescribes 6 more often than the typical California prescriber, 5 about as often and 10 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Dr. Lee prescribes?
No. It covers prescriptions filled by people with Medicare Part D drug coverage in 2024, and CMS leaves out any medication with fewer than 11 prescriptions.
About this data
This page shows one provider’s slice of public Medicare files. NPI Profile does not receive prescriptions or patient records.
| Source | What it provides here | Data year |
|---|---|---|
| CMS Medicare Part D Prescribers by Provider and Drug | Each medication, prescriptions, patients, 30-day fills, days of medication and cost. State comparisons average the California prescribers of the same medication and form, where at least five wrote it. | 2024 (released 2026, the most recent available) |
| CMS Medicare Part D Drug Spending Dashboard | What each medication is used for. | 2024 |
- Only prescriptions filled by people with Medicare Part D drug coverage are counted. Private insurance, Medicaid and cash purchases are not.
- CMS leaves out medications with fewer than 11 prescriptions and hides patient counts under 11.
- Cost per fill is what the plan and the patient paid the pharmacy together, not what you pay at the counter.
- Medication descriptions are summaries from CMS. They are not medical advice; ask a health care professional about any medication.
