DR. JOHANNA HSIN YING WU DO
Prescription History 1235871963
Family Medicine in Morgan Hill, CA
What does Dr. Wu prescribe?
In 2024, Dr. Wu wrote 208 Medicare prescriptions for 13 medications. The most prescribed was Atorvastatin Calcium, with 37 prescriptions for 18 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. Wu prescribes.
Medications 13 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
Atorvastatin is used along with a proper diet to help lower "bad" cholesterol and fats (such as LDL, triglycerides) and raise "good" cholesterol (HDL) in the blood.
Compared with California prescribers
Dr. Wu wrote 37 prescriptions for Atorvastatin Calcium, about 18% as often as the typical California prescriber of it (202). Medicare paid $13.36 per fill, versus $10.47 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
Tamsulosin is used by men to treat the symptoms of an enlarged prostate (benign prostatic hyperplasia-BPH).
Compared with California prescribers
Dr. Wu wrote 24 prescriptions for Tamsulosin Hcl, about 28% as often as the typical California prescriber of it (84). Medicare paid $2.72 per fill, versus $15.02 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
Gabapentin is used with other medications to prevent and control seizures.
Compared with California prescribers
Dr. Wu wrote 17 prescriptions for Gabapentin, about 21% as often as the typical California prescriber of it (80). Medicare paid $17.30 per fill, versus $15.63 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. Wu wrote 15 prescriptions for Albuterol Sulfate Hfa, about 26% as often as the typical California prescriber of it (58). Medicare paid $16.50 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
Metformin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar.
Compared with California prescribers
Dr. Wu wrote 15 prescriptions for Metformin Hcl, about 15% as often as the typical California prescriber of it (100). Medicare paid $12.26 per fill, versus $9.26 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
Amlodipine is used with or without other medications to treat high blood pressure.
Compared with California prescribers
Dr. Wu wrote 14 prescriptions for Amlodipine Besylate, about 10% as often as the typical California prescriber of it (141). Medicare paid $7.14 per fill, versus $7.08 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
Losartan is used to treat high blood pressure (hypertension) and to help protect the kidneys from damage due to diabetes.
Compared with California prescribers
Dr. Wu wrote 14 prescriptions for Losartan Potassium, about 12% as often as the typical California prescriber of it (121). Medicare paid $12.23 per fill, versus $10.35 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 contains digestive enzymes to help break down and digest fats, starch, and proteins in food.
Compared with California prescribers
Dr. Wu wrote 14 prescriptions for Zenpep, about 41% as often as the typical California prescriber of it (35). Medicare paid $211.61 per fill, versus $1,771.52 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 high blood pressure.
Compared with California prescribers
Dr. Wu wrote 12 prescriptions for Hydrochlorothiazide, about 19% as often as the typical California prescriber of it (62). Medicare paid $1.52 per fill, versus $5.71 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
Pantoprazole is used to treat certain stomach and esophagus problems (such as acid reflux).
Compared with California prescribers
Dr. Wu wrote 12 prescriptions for Pantoprazole Sodium, about 19% as often as the typical California prescriber of it (65). Medicare paid $7.60 per fill, versus $13.87 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 mental/mood disorders (such as depression, anxiety, panic attacks, and social anxiety disorder).
Compared with California prescribers
Dr. Wu wrote 12 prescriptions for Venlafaxine Hcl Er, about half as often as the typical California prescriber of it (28). Medicare paid $11.67 per fill, versus $23.92 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
Semaglutide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with California prescribers
Dr. Wu wrote 11 prescriptions for Ozempic, about 20% as often as the typical California prescriber of it (56). Medicare paid $1,369.16 per fill, versus $1,102.15 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 mental/mood disorders (such as depression, panic attacks, obsessive compulsive disorder, post-traumatic stress disorder, social anxiety disorder).
Compared with California prescribers
Dr. Wu wrote 11 prescriptions for Sertraline Hcl, about 24% as often as the typical California prescriber of it (46). Medicare paid $9.40 per fill, versus $9.59 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. Wu’s prescriptions
What does Dr. Wu prescribe most?
In 2024 Medicare Part D data, Dr. Wu's most prescribed medications were Atorvastatin Calcium (37), Tamsulosin Hcl (24) and Gabapentin (17).
How does Dr. Wu's prescribing compare with other California prescribers?
Of the 13 medications with a state comparison, Dr. Wu prescribes 13 less often than the typical California prescriber. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Dr. Wu 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.
