DR. BARBARA J MACCOLLUM M.D.
Prescription History 1215925821
Internal Medicine - Gastroenterology in Phoenix, AZ
Medicare Part D Prescription History
Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for DR. BARBARA J MACCOLLUM M.D., an active Gastroenterology specialist practicing in Phoenix, AZ. Our medical registry currently tracks 17 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 1,106 documented patient claims. Among these therapy options, the most frequently utilized medication is Pantoprazole Sodium, which accounts for 284 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.
| Medication | Prescriptions (2024)Rx (2024) | Avg Cost per FillCost / Fill | Vs. Other AZ PrescribersVs. AZ Avg |
|---|---|---|---|
| Pantoprazole Sodium | 284 | $14.61 | ▲ More 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 2024, this provider wrote 284 Medicare prescriptions for Pantoprazole Sodium, about 4.3 times the volume of the typical Arizona prescriber of this medication (66.8). Medicare paid an average of $14.61 per fill, versus $13.27 statewide. How often this provider prescribes it This provider prescribes this medication more often than the average AZ prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill Gross Part D cost per fill; not the patient's out-of-pocket price. 628.7 30-Day Fills standardized to 30-day supplies 18,759 Days of Medication total across all patients in 2024 | |||
| Famotidine | 260 | $11.30▼ below AZ avg | ▲ More than typical |
About Famotidine: Famotidine is used to treat ulcers of the stomach and intestines and to prevent intestinal ulcers from coming back after they have healed. Show more ▾ This medication is also used to treat certain stomach and throat (esophagus) problems (such as erosive esophagitis, gastroesophageal reflux disease-GERD, Zollinger-Ellison syndrome). It works by decreasing the amount of acid your stomach makes. It relieves symptoms such as cough that doesn't go away, stomach pain, heartburn, and difficulty swallowing. Famotidine belongs to a class of drugs known as H2 blockers. This medication is also available without a prescription. It is used to prevent and treat heartburn and other symptoms caused by too much acid in the stomach (acid indigestion). If you are taking this medication for self-treatment, it is important to read the manufacturer's package instructions carefully so you know when to consult your doctor or pharmacist. A competitive histamine H2-receptor antagonist. Its main pharmacodynamic effect is the inhibition of gastric secretion. In 2024, this provider wrote 260 Medicare prescriptions for Famotidine, about 5.8 times the volume of the typical Arizona prescriber of this medication (44.7). Medicare paid an average of $11.30 per fill, versus $16.40 statewide. How often this provider prescribes it This provider prescribes this medication more often than the average AZ prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill This provider's average cost per fill is below the AZ average for this medication. 618.7 30-Day Fills standardized to 30-day supplies 18,512 Days of Medication total across all patients in 2024 | |||
| Ondansetron OdtOndansetron | 123 | $9.57▼ below AZ avg | ▲ More than typical |
About Ondansetron Odt: 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. Ondansetron works by blocking one of the body's natural substances (serotonin) that causes vomiting. A competitive serotonin type 3 receptor antagonist. It is effective in the treatment of nausea and vomiting caused by cytotoxic chemotherapy drugs, including cisplatin, and has reported anxiolytic and neuroleptic properties. In 2024, this provider wrote 123 Medicare prescriptions for Ondansetron Odt, about 4.8 times the volume of the typical Arizona prescriber of this medication (25.7). Medicare paid an average of $9.57 per fill, versus $16.21 statewide. How often this provider prescribes it This provider prescribes this medication more often than the average AZ prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill This provider's average cost per fill is below the AZ average for this medication. 126 30-Day Fills standardized to 30-day supplies 714 Days of Medication total across all patients in 2024 | |||
| Omeprazole | 74 | $10.63▼ below AZ avg | ≈ 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 2024, this provider wrote 74 Medicare prescriptions for Omeprazole, about the same volume as the typical Arizona prescriber of this medication (73.6). Medicare paid an average of $10.63 per fill, versus $15.49 statewide. How often this provider prescribes it This provider's prescribing volume for this medication is in line with the average AZ prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill This provider's average cost per fill is below the AZ average for this medication. 186.5 30-Day Fills standardized to 30-day supplies 5,543 Days of Medication total across all patients in 2024 | |||
| Colestipol Hcl | 59 | $65.24▼ below AZ avg | ▲ More than typical |
About Colestipol Hcl: Colestipol is used along with a proper diet to lower cholesterol in the blood. Show more ▾ Lowering cholesterol helps decrease the risk for strokes and heart attacks. In addition to a proper diet (such as a low-cholesterol/low-fat diet), other lifestyle changes that may help this medication work better include exercising, losing weight if overweight, and stopping smoking. Consult your doctor for more details. This medication is known as a bile acid-binding resin. It works by removing bile acid from the body. In people with high cholesterol, this causes the liver to make more bile acid by using cholesterol in the blood. This helps to lower the cholesterol levels. Highly crosslinked and insoluble basic anion exchange resin used as anticholesteremic. It may also may reduce triglyceride levels. In 2024, this provider wrote 59 Medicare prescriptions for Colestipol Hcl, about 2.1 times the volume of the typical Arizona prescriber of this medication (28.6). Medicare paid an average of $65.24 per fill, versus $88.13 statewide. How often this provider prescribes it This provider prescribes this medication more often than the average AZ prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill This provider's average cost per fill is below the AZ average for this medication. 103.2 30-Day Fills standardized to 30-day supplies 3,096 Days of Medication total across all patients in 2024 | |||
| LinzessLinaclotide | 53 | $852.34▼ below AZ avg | ▲ More than typical |
About Linzess: See also Warning section. Show more ▾ Linaclotide is used to treat certain types of bowel problems (irritable bowel syndrome with constipation, chronic idiopathic constipation, functional constipation). It works by increasing fluid in your intestines and helping speed up movement of food through the gut. Linaclotide may improve stool texture and lessen symptoms such as bloating, abdominal pain/discomfort, straining, and feelings of incomplete bowel movements. An oral guanylate cyclase C agonist linaclotide; 14 amino acid peptide. In 2024, this provider wrote 53 Medicare prescriptions for Linzess, about 2 times the volume of the typical Arizona prescriber of this medication (26.7). Medicare paid an average of $852.34 per fill, versus $901.06 statewide. How often this provider prescribes it This provider prescribes this medication more often than the average AZ prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill This provider's average cost per fill is below the AZ average for this medication. 85 30-Day Fills standardized to 30-day supplies 2,550 Days of Medication total across all patients in 2024 | |||
| SutabSod Sulf/Pot Chloride/Mag Sulf | 48 | $161.45▼ below AZ avg | ≈ Typical |
About Sutab: This product is used to clean out the intestines before a certain bowel exam procedure (colonoscopy). Show more ▾ It is a laxative that works by drawing large amounts of water into the colon. This causes watery bowel movements. Clearing stool from the intestines helps your doctor to better examine the intestines during your procedure. In 2024, this provider wrote 48 Medicare prescriptions for Sutab, about the same volume as the typical Arizona prescriber of this medication (44.7). Medicare paid an average of $161.45 per fill, versus $162.74 statewide. How often this provider prescribes it This provider's prescribing volume for this medication is in line with the average AZ prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill This provider's average cost per fill is below the AZ average for this medication. 48 30-Day Fills standardized to 30-day supplies 94 Days of Medication total across all patients in 2024 | |||
| CreonLipase/Protease/Amylase | 28 | $3,296.40 | ≈ Typical |
About Creon: This medication contains digestive enzymes to help break down and digest fats, starch, and proteins in food. Show more ▾ It is used in conditions where the pancreas cannot make or does not release enough digestive enzymes into the small intestines to digest the food (conditions such as chronic pancreatitis, cystic fibrosis, cancer of the pancreas, post-pancreatectomy, post-gastrointestinal bypass surgery). A preparation of hog pancreatic enzymes standardized for lipase content. In 2024, this provider wrote 28 Medicare prescriptions for Creon, about 1.2 times the volume of the typical Arizona prescriber of this medication (23.4). Medicare paid an average of $3,296.40 per fill, versus $2,533.76 statewide. How often this provider prescribes it This provider's prescribing volume for this medication is in line with the average AZ prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill Gross Part D cost per fill; not the patient's out-of-pocket price. 32.4 30-Day Fills standardized to 30-day supplies 852 Days of Medication total across all patients in 2024 | |||
| TrulancePlecanatide | 27 | $989.41 | ≈ Typical |
About Trulance: See also Warning section. Show more ▾ Plecanatide is used to treat certain types of bowel problems (chronic idiopathic constipation, irritable bowel syndrome with constipation). It works by increasing fluid in your intestines and helping speed up movement of food through the gut. Plecanatide may improve stool texture and lessen symptoms such as straining and feelings of incomplete bowel movements. A uroguanylin analog and guanylate cyclase (GC-C receptor) agonist that activates receptors on gut epithelial cells to maintain barrier function, mucus production, and suppress inflammation. It is used in the treatment of chronic idiopathic constipation and other gastrointestinal disorders. In 2024, this provider wrote 27 Medicare prescriptions for Trulance, about 1.2 times the volume of the typical Arizona prescriber of this medication (23). Medicare paid an average of $989.41 per fill, versus $766.99 statewide. How often this provider prescribes it This provider's prescribing volume for this medication is in line with the average AZ prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill Gross Part D cost per fill; not the patient's out-of-pocket price. 49 30-Day Fills standardized to 30-day supplies 1,470 Days of Medication total across all patients in 2024 | |||
| Sucralfate | 25 | $84.83 | ≈ Typical |
About Sucralfate: This medication is used to treat and prevent ulcers in the intestines. Show more ▾ Sucralfate forms a coating over ulcers, protecting the area from further injury. This helps ulcers heal more quickly. A basic aluminum complex of sulfated sucrose. In 2024, this provider wrote 25 Medicare prescriptions for Sucralfate, about the same volume as the typical Arizona prescriber of this medication (24.5). Medicare paid an average of $84.83 per fill, versus $49.77 statewide. How often this provider prescribes it This provider's prescribing volume for this medication is in line with the average AZ prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill Gross Part D cost per fill; not the patient's out-of-pocket price. 42 30-Day Fills standardized to 30-day supplies 1,231 Days of Medication total across all patients in 2024 | |||
| Colesevelam Hcl | 24 | $98.95▼ below AZ avg | ≈ Typical |
About Colesevelam Hcl: This medication is used along with a proper diet and exercise to lower cholesterol in people with high levels of cholesterol in the blood. Show more ▾ Lowering cholesterol decreases the risk of heart disease and helps prevent strokes and heart attacks. Colesevelam is also used along with a proper diet and exercise to lower high blood sugar in people with type 2 diabetes. Controlling high blood sugar helps prevent kidney damage, blindness, nerve problems, loss of limbs, and sexual function problems. Proper control of diabetes may also lessen your risk of a heart attack or stroke. Colesevelam belongs to a class of drugs called bile acid-binding resins. Bile acid is a natural substance the liver makes by using cholesterol. This medication works by removing bile acid from the body. This causes the liver to make more bile acid by using cholesterol, which reduces cholesterol levels in the blood. It is not known how colesevelam works in lowering blood sugar. An allylamine derivative that binds BILE ACIDS in the intestine and is used as an ANTICHOLESTEREMIC AGENT in the treatment of HYPERCHOLESTEROLEMIA and HYPERLIPIDEMIAS. In 2024, this provider wrote 24 Medicare prescriptions for Colesevelam Hcl, about the same volume as the typical Arizona prescriber of this medication (22.9). Medicare paid an average of $98.95 per fill, versus $160.89 statewide. How often this provider prescribes it This provider's prescribing volume for this medication is in line with the average AZ prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill This provider's average cost per fill is below the AZ average for this medication. 38.4 30-Day Fills standardized to 30-day supplies 1,153 Days of Medication total across all patients in 2024 | |||
| Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine | 24 | $73.83 | ▲ More than typical |
About Diphenoxylate-Atropine: This medication is used to treat diarrhea. Show more ▾ It helps to decrease the number and frequency of bowel movements. It works by slowing the movement of the intestines. Diphenoxylate is similar to opioid pain relievers, but it acts mainly to slow the gut. Atropine belongs to a class of drugs known as anticholinergics, which help to dry up body fluids and also slow gut movement. This medication should not be used to treat diarrhea caused by certain types of infection (such as C. difficile-associated diarrhea following antibiotic therapy). Talk to your doctor for more details. This medication is not recommended for use in children younger than 6 years due to an increased risk of serious side effects (such as breathing problems). In 2024, this provider wrote 24 Medicare prescriptions for Diphenoxylate-Atropine, about 1.3 times the volume of the typical Arizona prescriber of this medication (19.1). Medicare paid an average of $73.83 per fill, versus $25.34 statewide. How often this provider prescribes it This provider prescribes this medication more often than the average AZ prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill Gross Part D cost per fill; not the patient's out-of-pocket price. 32 30-Day Fills standardized to 30-day supplies 845 Days of Medication total across all patients in 2024 | |||
| Budesonide DrBudesonide | 21 | $69.23▼ below AZ avg | ≈ Typical |
About Budesonide Dr: This medication is used to treat a certain bowel condition (Crohn's disease). Show more ▾ While budesonide does not cure this condition, it may decrease symptoms such as pain and diarrhea. Budesonide is an anti-inflammatory drug (corticosteroid hormone). It works by decreasing the body's natural defense response (immune response). A glucocorticoid used in the management of ASTHMA, the treatment of various skin disorders, and allergic RHINITIS. In 2024, this provider wrote 21 Medicare prescriptions for Budesonide Dr, about 89% of the volume of the typical Arizona prescriber of this medication (23.6). Medicare paid an average of $69.23 per fill, versus $110.90 statewide. How often this provider prescribes it This provider's prescribing volume for this medication is in line with the average AZ prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill This provider's average cost per fill is below the AZ average for this medication. 41.9 30-Day Fills standardized to 30-day supplies 1,258 Days of Medication total across all patients in 2024 | |||
| Dicyclomine Hcl | 19 | $24.69 | ≈ Typical |
About Dicyclomine Hcl: Dicyclomine is used to treat a certain type of intestinal problem called irritable bowel syndrome. Show more ▾ It helps to reduce the symptoms of stomach and intestinal cramping. This medication works by slowing the natural movements of the gut and by relaxing the muscles in the stomach and intestines. Dicyclomine belongs to a class of drugs known as anticholinergics/antispasmodics. This medication must not be used by children younger than 6 months because of the risk of serious side effects. A muscarinic antagonist used as an antispasmodic and in urinary incontinence. It has little effect on glandular secretion or the cardiovascular system. It does have some local anesthetic properties and is used in gastrointestinal, biliary, and urinary tract spasms. In 2024, this provider wrote 19 Medicare prescriptions for Dicyclomine Hcl, about 79% of the volume of the typical Arizona prescriber of this medication (24.2). Medicare paid an average of $24.69 per fill, versus $21.28 statewide. How often this provider prescribes it This provider's prescribing volume for this medication is in line with the average AZ prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill Gross Part D cost per fill; not the patient's out-of-pocket price. 19 30-Day Fills standardized to 30-day supplies 465 Days of Medication total across all patients in 2024 | |||
| Mesalamine ErMesalamine | 13 | $179.42▼ below AZ avg | ▼ Less than typical |
About Mesalamine Er: This medication is used to treat a certain bowel disease (ulcerative colitis). Show more ▾ It helps to reduce symptoms of ulcerative colitis such as diarrhea, rectal bleeding, and stomach pain. Mesalamine belongs to a class of drugs known as aminosalicylates. It works by decreasing swelling in the colon. An anti-inflammatory agent, structurally related to the SALICYLATES, which is active in INFLAMMATORY BOWEL DISEASE. It is considered to be the active moiety of SULPHASALAZINE. (From Martindale, The Extra Pharmacopoeia, 30th ed) In 2024, this provider wrote 13 Medicare prescriptions for Mesalamine Er, about half the volume of the typical Arizona prescriber of this medication (27.5). Medicare paid an average of $179.42 per fill, versus $244.31 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average AZ prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill This provider's average cost per fill is below the AZ average for this medication. 23 30-Day Fills standardized to 30-day supplies 690 Days of Medication total across all patients in 2024 | |||
| EntyvioVedolizumab | 13 | $8,792.42 | ≈ Typical |
About Entyvio: This medication is used to treat certain bowel disorders (ulcerative colitis, Crohn's disease). Show more ▾ In these conditions, the body's defense system (immune system) attacks healthy tissues in the gut, causing symptoms such as abdominal pain, blood in the stool, and diarrhea. Vedolizumab belongs to a class of drugs known as monoclonal antibodies. It works by blocking the actions of a certain natural substance (integrin) in the body. This helps to decrease swelling (inflammation) in the gut, which lessens symptoms and may slow or stop damage from these bowel disorders. A humanized monoclonal antibody that targets the 4beta7 integrin exclusively, and modulates inflammation in the gastrointestinal tract. In 2024, this provider wrote 13 Medicare prescriptions for Entyvio, about 79% of the volume of the typical Arizona prescriber of this medication (16.4). Medicare paid an average of $8,792.42 per fill, versus $8,624.11 statewide. How often this provider prescribes it This provider's prescribing volume for this medication is in line with the average AZ prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill Gross Part D cost per fill; not the patient's out-of-pocket price. 13 30-Day Fills standardized to 30-day supplies 364 Days of Medication total across all patients in 2024 | |||
| Esomeprazole Magnesium | 11 | $7.63▼ below AZ avg | ▼ Less than typical |
About Esomeprazole Magnesium: Esomeprazole 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. Esomeprazole belongs to a class of drugs known as proton pump inhibitors (PPIs). If you are self-treating with this medication, over-the-counter esomeprazole 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. The S-isomer of omeprazole. In 2024, this provider wrote 11 Medicare prescriptions for Esomeprazole Magnesium, about half the volume of the typical Arizona prescriber of this medication (22.2). Medicare paid an average of $7.63 per fill, versus $45.40 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average AZ prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill This provider's average cost per fill is below the AZ average for this medication. 21 30-Day Fills standardized to 30-day supplies 630 Days of Medication total across all patients in 2024 | |||
About this data. The prescription history for DR. BARBARA J MACCOLLUM M.D. is compiled from the Centers for Medicare & Medicaid Services (CMS) Medicare Part D Prescriber Public Use File for calendar year 2024, 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 Phoenix, AZ 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 among AZ prescribers of the same medication and form, shown only when at least five prescribers contribute. Always confirm current medications and costs directly with the provider and your plan.
About the medication summaries. Drug use descriptions come from the CMS Medicare Part D Drug Spending Dashboard (2024), and substance definitions from Medical Subject Headings (MeSH) 2026, U.S. National Library of Medicine. They are summaries that do not contain all possible information about a medication and are not individual medical advice. Ask a health care professional about any medication and your specific health needs.
