MR. MOHAMMAD RIAZ MD
Prescription History 1619947421
Internal Medicine - Medical Oncology in Katy, TX

Active since January 24, 2006PECOS EnrolledAccepts Medicare Assignment
99.1/100
CMS Quality Rating
410 W GRAND PKWY S STE 4C, KATY, TX 77494(281) 647-7766(281) 647-7767 Get Directions

NPPES record last updated: September 5, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Sep 5, 2025, Dec 14, 2023, Dec 29, 2017 (3 updates tracked since 2017).

Medicare Part D Prescription History

Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for MR. MOHAMMAD RIAZ MD, an active Medical Oncology specialist practicing in Katy, TX. Our medical registry currently tracks 13 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 245 documented patient claims. Among these therapy options, the most frequently utilized medication is Ondansetron Hcl, which accounts for 44 claims alone. Use the table below to sort by claims, cost, or utilization compared with the state average; select any medication for its full profile.

13
Medications
245
Total Claims
282
30-Day Fills
Ondansetron Hcl
Most Prescribed · 44 claims
View details
13 medications · 2023 Medicare Part D
Medicare Part D medications prescribed by MR. MOHAMMAD RIAZ MD in 2023, with prescription volumes, average cost per fill, and TX state comparisons
Medication Prescriptions (2023)Rx (2023) Avg Cost per FillCost / Fill Vs. Other TX PrescribersVs. TX Avg

About Ondansetron Hcl: This medication is used alone or with other medications to prevent nausea and vomiting caused by cancer drug treatment (chemotherapy) and radiation therapy. Show more ▾

It is also used to prevent and treat nausea and vomiting after surgery. It works by blocking one of the body's natural substances (serotonin) that causes vomiting.

In 2023, this provider wrote 44 Medicare prescriptions for Ondansetron Hcl, about 2.4 times the volume of the typical Texas prescriber of this medication (18). Medicare paid an average of $14.83 per fill, versus $7.06 statewide.

How often this provider prescribes it

This provider
44
TX average
18.0

This provider prescribes this medication more often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$14.83
TX average
$7.06

Gross Part D cost per fill; not the patient's out-of-pocket price.

44
30-Day Fills
standardized to 30-day supplies
687
Days of Medication
total across all patients in 2023

About Prochlorperazine Maleate: This medication is used to treat severe nausea and vomiting from certain causes (for example, after surgery or cancer treatment). Show more ▾

Prochlorperazine belongs to a class of drugs known as phenothiazines. This medication is not recommended for use in children younger than 2 years or in children going through surgery. A phenothiazine antipsychotic used principally in the treatment of NAUSEA; VOMITING; and VERTIGO. It is more likely than CHLORPROMAZINE to cause EXTRAPYRAMIDAL DISORDERS. (From Martindale, The Extra Pharmacopoeia, 30th ed, p612)

In 2023, this provider wrote 33 Medicare prescriptions for Prochlorperazine Maleate, about 1.2 times the volume of the typical Texas prescriber of this medication (27). Medicare paid an average of $16.23 per fill, versus $17.28 statewide.

How often this provider prescribes it

This provider
33
TX average
27.0

This provider's prescribing volume for this medication is in line with the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$16.23
TX average
$17.28

This provider's average cost per fill is below the TX average for this medication.

33
30-Day Fills
standardized to 30-day supplies
618
Days of Medication
total across all patients in 2023

About Gabapentin: Gabapentin is used with other medications to prevent and control seizures. Show more ▾

It is also used to relieve nerve pain following shingles (a painful rash due to herpes zoster infection) in adults. Gabapentin is known as an anticonvulsant or antiepileptic drug. A cyclohexane-gamma-aminobutyric acid derivative that is used for the treatment of PARTIAL SEIZURES; NEURALGIA; and RESTLESS LEGS SYNDROME.

In 2023, this provider wrote 18 Medicare prescriptions for Gabapentin, about 19% of the volume of the typical Texas prescriber of this medication (94). Medicare paid an average of $12.82 per fill, versus $21.94 statewide.

How often this provider prescribes it

This provider
18
TX average
94.0

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$12.82
TX average
$21.94

This provider's average cost per fill is below the TX average for this medication.

26.7
30-Day Fills
standardized to 30-day supplies
800
Days of Medication
total across all patients in 2023

About Venclexta: This medication is used to treat certain types of cancer (chronic lymphocytic leukemia-CLL, small lymphocytic lymphoma-SLL, acute myeloid leukemia-AML). Show more ▾

Venetoclax is a drug that works by helping to slow or stop the growth of cancer cells.

In 2023, this provider wrote 18 Medicare prescriptions for Venclexta, about 69% of the volume of the typical Texas prescriber of this medication (26). Medicare paid an average of $11,424.87 per fill, versus $7,516.09 statewide.

How often this provider prescribes it

This provider
18
TX average
26.0

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$11,424.87
TX average
$7,516.09

Gross Part D cost per fill; not the patient's out-of-pocket price.

18
30-Day Fills
standardized to 30-day supplies
462
Days of Medication
total across all patients in 2023

About Eliquis: Apixaban is used to prevent serious blood clots from forming due to a certain irregular heartbeat (atrial fibrillation) or after hip/knee replacement surgery. Show more ▾

With atrial fibrillation, part of the heart does not beat the way it should. This can lead to blood clots forming, which can travel to other parts of your body (such as the lungs or legs) or increase your risk for stroke. In the United States, apixaban is also approved to treat certain types of blood clots (deep vein thrombosis-DVT, pulmonary embolus-PE) and to prevent them from forming again. Apixaban is an anticoagulant that works by blocking certain clotting proteins in your blood.

In 2023, this provider wrote 17 Medicare prescriptions for Eliquis, about a quarter of the volume of the typical Texas prescriber of this medication (76). Medicare paid an average of $699.03 per fill, versus $810.39 statewide.

How often this provider prescribes it

This provider
17
TX average
76.0

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$699.03
TX average
$810.39

This provider's average cost per fill is below the TX average for this medication.

19.3
30-Day Fills
standardized to 30-day supplies
580
Days of Medication
total across all patients in 2023

About Tagrisso: This medication is used to treat lung cancer. Show more ▾

Osimertinib belongs to a class of drugs known as kinase inhibitors. It works by slowing or stopping the growth of cancer cells. It binds to a certain protein (epidermal growth factor receptor-EGFR) in some tumors.

In 2023, this provider wrote 17 Medicare prescriptions for Tagrisso, about 74% of the volume of the typical Texas prescriber of this medication (23). Medicare paid an average of $17,484.88 per fill, versus $17,056.99 statewide.

How often this provider prescribes it

This provider
17
TX average
23.0

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$17,484.88
TX average
$17,056.99

Gross Part D cost per fill; not the patient's out-of-pocket price.

17
30-Day Fills
standardized to 30-day supplies
510
Days of Medication
total across all patients in 2023

About Warfarin Sodium: This medication is used to treat blood clots (such as in deep vein thrombosis-DVT or pulmonary embolus-PE) and/or to prevent new clots from forming in your body. Show more ▾

Preventing harmful blood clots helps to reduce the risk of a stroke or heart attack. Conditions that increase your risk of developing blood clots include a certain type of irregular heart rhythm (atrial fibrillation), heart valve replacement, recent heart attack, and certain surgeries (such as hip/knee replacement). Warfarin is commonly called a blood thinner, but the more correct term is anticoagulant. It helps to keep blood flowing smoothly in your body by decreasing the amount of certain substances (clotting proteins) in your blood. An anticoagulant that acts by inhibiting the synthesis of vitamin K-dependent coagulation factors. Warfarin is indicated for the prophylaxis and/or treatment of venous thrombosis and its extension, pulmonary embolism, and atrial fibrillation with embolization. It is also used as an adjunct in the prophylaxis of systemic embolism after myocardial infarction. Warfarin is also used as a rodenticide.

In 2023, this provider wrote 17 Medicare prescriptions for Warfarin Sodium, about half the volume of the typical Texas prescriber of this medication (36). Medicare paid an average of $2.41 per fill, versus $13.33 statewide.

How often this provider prescribes it

This provider
17
TX average
36.0

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$2.41
TX average
$13.33

This provider's average cost per fill is below the TX average for this medication.

19
30-Day Fills
standardized to 30-day supplies
570
Days of Medication
total across all patients in 2023

About Hydroxyurea: 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. Show more ▾

Some brands are also used to treat certain types of cancer (such as chronic myelogenous leukemia, squamous cell carcinomas). An antineoplastic agent that inhibits DNA synthesis through the inhibition of ribonucleoside diphosphate reductase.

In 2023, this provider wrote 16 Medicare prescriptions for Hydroxyurea, about half the volume of the typical Texas prescriber of this medication (34). Medicare paid an average of $27.31 per fill, versus $38.59 statewide.

How often this provider prescribes it

This provider
16
TX average
34.0

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$27.31
TX average
$38.59

This provider's average cost per fill is below the TX average for this medication.

24
30-Day Fills
standardized to 30-day supplies
720
Days of Medication
total across all patients in 2023

About Hydrocodone-Acetaminophen: This combination medication is used to relieve moderate to severe pain. Show more ▾

It contains an opioid pain reliever (hydrocodone) and a non-opioid pain reliever (acetaminophen). Hydrocodone works in the brain to change how your body feels and responds to pain. Acetaminophen can also reduce a fever.

In 2023, this provider wrote 15 Medicare prescriptions for Hydrocodone-Acetaminophen, about 12% of the volume of the typical Texas prescriber of this medication (121). Medicare paid an average of $19.78 per fill, versus $24.84 statewide.

How often this provider prescribes it

This provider
15
TX average
121.0

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$19.78
TX average
$24.84

This provider's average cost per fill is below the TX average for this medication.

15
30-Day Fills
standardized to 30-day supplies
321
Days of Medication
total across all patients in 2023

About Imbruvica: This medication is used to treat certain cancers (such as mantle cell or marginal zone lymphoma, chronic lymphocytic leukemia/small lymphocytic lymphoma, Waldenstrom's macroglobulinemia). Show more ▾

Ibrutinib belongs to a class of drugs known as kinase inhibitors. It works by slowing or stopping the growth of cancer cells. Ibrutinib is also used to treat a certain problem that may occur after a stem cell transplant (chronic graft versus host disease). It works by weakening your body's defense system (immune system).

In 2023, this provider wrote 15 Medicare prescriptions for Imbruvica, about half the volume of the typical Texas prescriber of this medication (28). Medicare paid an average of $16,693.56 per fill, versus $14,715.59 statewide.

How often this provider prescribes it

This provider
15
TX average
28.0

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$16,693.56
TX average
$14,715.59

Gross Part D cost per fill; not the patient's out-of-pocket price.

15
30-Day Fills
standardized to 30-day supplies
420
Days of Medication
total across all patients in 2023

About Tamoxifen Citrate: Tamoxifen is used to treat breast cancer. Show more ▾

It is also used to reduce the chances of breast cancer in high-risk patients. This medication can block the growth of breast cancer. It works by interfering with the effects of estrogen in the breast tissue. One of the SELECTIVE ESTROGEN RECEPTOR MODULATORS with tissue-specific activities. Tamoxifen acts as an anti-estrogen (inhibiting agent) in the mammary tissue, but as an estrogen (stimulating agent) in cholesterol metabolism, bone density, and cell proliferation in the ENDOMETRIUM.

In 2023, this provider wrote 13 Medicare prescriptions for Tamoxifen Citrate, about a third of the volume of the typical Texas prescriber of this medication (38). Medicare paid an average of $16.55 per fill, versus $34.53 statewide.

How often this provider prescribes it

This provider
13
TX average
38.0

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$16.55
TX average
$34.53

This provider's average cost per fill is below the TX average for this medication.

29
30-Day Fills
standardized to 30-day supplies
870
Days of Medication
total across all patients in 2023

About Dexamethasone: 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. Show more ▾

It is also used as a test for an adrenal gland disorder (Cushing's syndrome). Dexamethasone 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. An anti-inflammatory 9-fluoro-glucocorticoid.

In 2023, this provider wrote 11 Medicare prescriptions for Dexamethasone, about a third of the volume of the typical Texas prescriber of this medication (31). Medicare paid an average of $23.62 per fill, versus $13.56 statewide.

How often this provider prescribes it

This provider
11
TX average
31.0

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$23.62
TX average
$13.56

Gross Part D cost per fill; not the patient's out-of-pocket price.

11
30-Day Fills
standardized to 30-day supplies
152
Days of Medication
total across all patients in 2023

About Lidocaine-Prilocaine: This medication contains 2 amide-type local anesthetics, lidocaine and prilocaine. Show more ▾

It is used on normal, unbroken skin or on the outer genital area to prevent pain before certain procedures such as inserting a needle, skin grafts, or skin laser surgery. It works by temporarily numbing the skin and surrounding area. Do not use this product in the ears. If this product alone cannot completely numb the area being treated, it may be used to numb the area before a lidocaine injection is given to provide enough pain relief for certain procedures (such as removal of genital warts). A topical local anesthetic preparation that is composed of a mixture of lidocaine and prilocaine. It is used to provide anesthesia during minor surgery and for the treatment of PREMATURE EJACULATION.

In 2023, this provider wrote 11 Medicare prescriptions for Lidocaine-Prilocaine, about half the volume of the typical Texas prescriber of this medication (23). Medicare paid an average of $20.70 per fill, versus $29.56 statewide.

How often this provider prescribes it

This provider
11
TX average
23.0

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$20.70
TX average
$29.56

This provider's average cost per fill is below the TX average for this medication.

11
30-Day Fills
standardized to 30-day supplies
275
Days of Medication
total across all patients in 2023
No medications match the current filters.
= the 5 medications this provider prescribes most. More than typical Typical Less than typical= prescription volume vs the average TX prescriber of the same medication; volume reflects practice size as well as clinical preference.Green cost= below the TX average cost per fill.

About this data. The prescription history for MR. MOHAMMAD RIAZ MD is compiled from the Centers for Medicare & Medicaid Services (CMS) Medicare Part D Prescriber Public Use File for calendar year 2023, the most recent federal release. Figures cover prescriptions filled for Medicare Part D beneficiaries only; prescriptions under private insurance, Medicaid, or self-pay plans are not included. Because prescribing decisions are generally consistent across coverage types, this record offers a useful view of the overall Medical Oncology prescribing approach at this Katy, TX practice.

Reading the costs. Drug costs are gross amounts paid to pharmacies under Part D, including both plan and beneficiary payments. They are not the price a patient pays at the pharmacy counter. Medications with fewer than 11 claims are excluded from the federal source data, and state comparisons use the average volume among TX prescribers of the same medication. Always confirm current medications and costs directly with the provider and your plan.