DR. PETER DONALD MAHER IV M.D.
Prescription History 1689857310
Internal Medicine - Gastroenterology in Richland, WA

Active since December 17, 2007PECOS EnrolledAccepts Medicare Assignment
83.05/100
CMS Quality Rating
1270 LEE BLVD, RICHLAND, WA 99352(509) 942-3180(509) 943-9722 Get Directions

NPPES record last updated: June 15, 2023. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jun 15, 2023, Jun 17, 2021, Nov 19, 2018 (3 updates tracked since 2018).

Medicare Part D Prescription History

Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for DR. PETER DONALD MAHER IV M.D., an active Gastroenterology specialist practicing in Richland, WA. Our medical registry currently tracks 3 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 84 documented patient claims. Among these therapy options, the most frequently utilized medication is Omeprazole, which accounts for 51 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.

3
Medications
84
Total Claims
186
30-Day Fills
Omeprazole
Most Prescribed · 51 claims
View details
3 medications · 2023 Medicare Part D
Medicare Part D medications prescribed by DR. PETER DONALD MAHER IV M.D. in 2023, with prescription volumes, average cost per fill, and WA state comparisons
Medication Prescriptions (2023)Rx (2023) Avg Cost per FillCost / Fill Vs. Other WA PrescribersVs. WA Avg
Omeprazole51$13.04▼ below WA avg Less than typical

About Omeprazole: Omeprazole is used to treat certain stomach and esophagus problems (such as acid reflux, ulcers). Show more ▾

It works by decreasing the amount of acid your stomach makes. It relieves symptoms such as heartburn, difficulty swallowing, and cough. This medication helps heal acid damage to the stomach and esophagus, helps prevent ulcers, and may help prevent cancer of the esophagus. Omeprazole belongs to a class of drugs known as proton pump inhibitors (PPIs). If you are self-treating with this medication, over-the-counter omeprazole products are used to treat frequent heartburn (occurring 2 or more days a week). Since it may take 1 to 4 days to have full effect, these products do not relieve heartburn right away. For over-the-counter products, carefully read the package instructions to make sure the product is right for you. Check the ingredients on the label even if you have used the product before. The manufacturer may have changed the ingredients. Also, products with similar brand names may contain different ingredients meant for different purposes. Taking the wrong product could harm you. A 4-methoxy-3,5-dimethylpyridyl, 5-methoxybenzimidazole derivative of timoprazole that is used in the therapy of STOMACH ULCERS and ZOLLINGER-ELLISON SYNDROME. The drug inhibits an H(+)-K(+)-EXCHANGING ATPASE which is found in GASTRIC PARIETAL CELLS.

In 2023, this provider wrote 51 Medicare prescriptions for Omeprazole, about 67% of the volume of the typical Washington prescriber of this medication (76). Medicare paid an average of $13.04 per fill, versus $15.63 statewide.

How often this provider prescribes it

This provider
51
WA average
76.0

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

What Medicare paid per fill

This provider
$13.04
WA average
$15.63

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

126.8
30-Day Fills
standardized to 30-day supplies
3,789
Days of Medication
total across all patients in 2023
Pantoprazole Sodium21$17.91▼ below WA avg Less than typical

About Pantoprazole Sodium: Pantoprazole is used to treat certain stomach and esophagus problems (such as acid reflux). Show more ▾

It works by decreasing the amount of acid your stomach makes. This medication relieves symptoms such as heartburn, difficulty swallowing, and cough. It helps heal acid damage to the stomach and esophagus, helps prevent ulcers, and may help prevent cancer of the esophagus. Pantoprazole belongs to a class of drugs known as proton pump inhibitors (PPIs). 2-pyridinylmethylsulfinylbenzimidazole proton pump inhibitor that is used in the treatment of GASTROESOPHAGEAL REFLUX and PEPTIC ULCER.

In 2023, this provider wrote 21 Medicare prescriptions for Pantoprazole Sodium, about half the volume of the typical Washington prescriber of this medication (45). Medicare paid an average of $17.91 per fill, versus $18.43 statewide.

How often this provider prescribes it

This provider
21
WA average
45.0

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

What Medicare paid per fill

This provider
$17.91
WA average
$18.43

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

47
30-Day Fills
standardized to 30-day supplies
1,394
Days of Medication
total across all patients in 2023
Humira PenAdalimumab12$7,476.83▼ below WA avg Less than typical

About Humira Pen: Adalimumab is used to reduce pain and swelling due to certain types of arthritis (such as rheumatoid, psoriatic, juvenile idiopathic, ankylosing spondylitis). Show more ▾

This medication is also used to treat certain skin disorders (such as plaque-type psoriasis, hidradenitis suppurativa). It works by blocking a protein (tumor necrosis factor or TNF) found in the body's immune system that causes joint swelling and damage in arthritis as well as red scaly patches in psoriasis. Adalimumab belongs to a class of drugs known as TNF blockers. By reducing joint swelling, this medication helps to reduce further joint damage and preserve joint function. Adalimumab is also used to treat certain bowel conditions (Crohn's disease, ulcerative colitis) and a certain eye disease (uveitis). A humanized monoclonal antibody that binds specifically to TNF-ALPHA and blocks its interaction with endogenous TNF RECEPTORS to modulate INFLAMMATION. It is used in the treatment of RHEUMATOID ARTHRITIS; PSORIATIC ARTHRITIS; CROHN'S DISEASE and ULCERATIVE COLITIS.

In 2023, this provider wrote 12 Medicare prescriptions for Humira Pen, about 63% of the volume of the typical Washington prescriber of this medication (19). Medicare paid an average of $7,476.83 per fill, versus $7,833.73 statewide.

How often this provider prescribes it

This provider
12
WA average
19.0

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

What Medicare paid per fill

This provider
$7,476.83
WA average
$7,833.73

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

12
30-Day Fills
standardized to 30-day supplies
336
Days of Medication
total across all patients in 2023
No medications match the current filters.
More than typical Typical Less than typical= prescription volume vs the average WA prescriber of the same medication; volume reflects practice size as well as clinical preference.Green cost= below the WA average cost per fill.

About this data. The prescription history for DR. PETER DONALD MAHER IV M.D. 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 Gastroenterology prescribing approach at this Richland, WA 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 WA prescribers of the same medication. Always confirm current medications and costs directly with the provider and your plan.