DR. KEVIN Q CHANG MD
Prescription History 1649219452
Internal Medicine - Hematology & Oncology in Oxnard, CA
What does Dr. Chang prescribe?
In 2024, Dr. Chang wrote 508 Medicare prescriptions for 21 medications. The most prescribed was Prednisone, with 50 prescriptions for 12 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. Chang 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
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. Chang wrote 50 prescriptions for Prednisone, about 1.2 times as often as the typical California prescriber of it (40). Medicare paid $6.42 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
Anastrozole is used to treat breast cancer in women after menopause.
Compared with California prescribers
Dr. Chang wrote 45 prescriptions for Anastrozole, about 66% as often as the typical California prescriber of it (68). Medicare paid $14.65 per fill, versus $20.79 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 prostate cancer.
Compared with California prescribers
Dr. Chang wrote 43 prescriptions for Abiraterone Acetate, about 73% as often as the typical California prescriber of it (59). Medicare paid $1,489.46 per fill, versus $1,101.95 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
Apixaban is used to prevent serious blood clots from forming due to a certain irregular heartbeat (atrial fibrillation) or after hip/knee replacement surgery.
Compared with California prescribers
Dr. Chang wrote 41 prescriptions for Eliquis, about half as often as the typical California prescriber of it (73). Medicare paid $714.33 per fill, versus $923.33 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
Dexamethasone is used to treat conditions such as arthritis, blood/hormone disorders, allergic reactions, skin diseases, eye problems, breathing problems, bowel disorders, cancer, and immune system disorders.
Compared with California prescribers
Dr. Chang wrote 34 prescriptions for Dexamethasone, about as often as the typical California prescriber of it (35). Medicare paid $12.94 per fill, versus $13.93 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
Acyclovir is used to treat infections caused by certain types of viruses.
Compared with California prescribers
Dr. Chang wrote 33 prescriptions for Acyclovir, about 1.3 times as often as the typical California prescriber of it (25). Medicare paid $30.97 per fill, versus $18.27 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
Lenalidomide is used to treat various types of cancers.
Compared with California prescribers
Dr. Chang wrote 28 prescriptions for Revlimid, about as often as the typical California prescriber of it (31). Medicare paid $18,985.41 per fill, versus $17,406.67 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
Allopurinol is used to treat gout and certain types of kidney stones.
Compared with California prescribers
Dr. Chang wrote 27 prescriptions for Allopurinol, about 61% as often as the typical California prescriber of it (44). Medicare paid $7.71 per fill, versus $10.39 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. Chang wrote 24 prescriptions for Gabapentin, about 30% as often as the typical California prescriber of it (80). Medicare paid $2.78 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
Enzalutamide is used to treat prostate cancer.
Compared with California prescribers
Dr. Chang wrote 24 prescriptions for Xtandi, about 71% as often as the typical California prescriber of it (34). Medicare paid $13,256.12 per fill, versus $13,029.46 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 alone or with other medications to prevent nausea and vomiting caused by cancer drug treatment (chemotherapy) and radiation therapy.
Compared with California prescribers
Dr. Chang wrote 19 prescriptions for Ondansetron Odt, about 77% as often as the typical California prescriber of it (25). Medicare paid $10.03 per fill, versus $13.40 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 types of breast cancer (such as hormone-receptor-positive breast cancer) in women after menopause.
Compared with California prescribers
Dr. Chang wrote 18 prescriptions for Letrozole, about 36% as often as the typical California prescriber of it (49). Medicare paid $6.78 per fill, versus $22.86 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 a combination of two antibiotics: sulfamethoxazole and trimethoprim.
Compared with California prescribers
Dr. Chang wrote 18 prescriptions for Sulfamethoxazole-Trimethoprim, about 71% as often as the typical California prescriber of it (25). Medicare paid $5.47 per fill, versus $4.62 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 by people with sickle cell anemia to reduce the number of painful crises caused by the disease and to reduce the need for blood transfusions.
Compared with California prescribers
Dr. Chang wrote 17 prescriptions for Hydroxyurea, about half as often as the typical California prescriber of it (35). Medicare paid $22.91 per fill, versus $28.53 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
Bicalutamide is used to treat prostate cancer.
Compared with California prescribers
Dr. Chang wrote 15 prescriptions for Bicalutamide, about half as often as the typical California prescriber of it (30). Medicare paid $31.67 per fill, versus $33.38 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
Pomalidomide is used to treat certain types of cancers (such as multiple myeloma, Kaposi sarcoma).
Compared with California prescribers
Dr. Chang wrote 14 prescriptions for Pomalyst, about half as often as the typical California prescriber of it (27). Medicare paid $23,038.34 per fill, versus $22,448.87 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 cancers (such as chronic lymphocytic leukemia/small lymphocytic lymphoma, Waldenstrom's macroglobulinemia).
Compared with California prescribers
Dr. Chang wrote 13 prescriptions for Imbruvica, about half as often as the typical California prescriber of it (25). Medicare paid $16,771.01 per fill, versus $15,720.46 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 lung cancer.
Compared with California prescribers
Dr. Chang wrote 12 prescriptions for Tagrisso, about 34% as often as the typical California prescriber of it (36). Medicare paid $16,803.71 per fill, versus $16,840.72 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 cancers (mantle cell lymphoma, marginal zone lymphoma, Waldenstrom's macroglobulinemia, chronic lymphocytic leukemia, small lymphocytic lymphoma, follicular lymphoma).
Compared with California prescribers
Dr. Chang wrote 11 prescriptions for Brukinsa, about 37% as often as the typical California prescriber of it (30). Medicare paid $13,723.81 per fill, versus $12,543.75 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. Chang wrote 11 prescriptions for Pantoprazole Sodium, about 17% as often as the typical California prescriber of it (65). Medicare paid $4.55 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 a mineral supplement used to treat or prevent low amounts of potassium in the blood.
Compared with California prescribers
Dr. Chang wrote 11 prescriptions for Potassium Chloride, about 23% as often as the typical California prescriber of it (48). Medicare paid $4.13 per fill, versus $24.00 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. Chang’s prescriptions
What does Dr. Chang prescribe most?
In 2024 Medicare Part D data, Dr. Chang's most prescribed medications were Prednisone (50), Anastrozole (45) and Abiraterone Acetate (43).
How does Dr. Chang's prescribing compare with other California prescribers?
Of the 21 medications with a state comparison, Dr. Chang prescribes 1 more often than the typical California prescriber, 4 about as often and 16 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Dr. Chang 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.
