JOHN THOMAS MCGUIRE M.D.
Prescription History 1346354487
Internal Medicine in Portland, OR
What does Dr. Mcguire prescribe?
In 2024, Dr. Mcguire wrote 1,687 Medicare prescriptions for 50 medications. The most prescribed was Levothyroxine Sodium, with 122 prescriptions.
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. Mcguire prescribes.
Medications 50 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 Oregon prescribers.
What it is used for
Levothyroxine is used to treat an underactive thyroid (hypothyroidism).
Compared with Oregon prescribers
Dr. Mcguire wrote 122 prescriptions for Levothyroxine Sodium, about as often as the typical Oregon prescriber of it (130). Medicare paid $10.75 per fill, versus $12.22 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
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 Oregon prescribers
Dr. Mcguire wrote 112 prescriptions for Atorvastatin Calcium, about 67% as often as the typical Oregon prescriber of it (168). Medicare paid $14.40 per fill, versus $12.77 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 Oregon prescribers
Dr. Mcguire wrote 104 prescriptions for Gabapentin, about 1.4 times as often as the typical Oregon prescriber of it (77). Medicare paid $23.60 per fill, versus $20.58 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 Oregon prescribers
Dr. Mcguire wrote 97 prescriptions for Pantoprazole Sodium, about 1.9 times as often as the typical Oregon prescriber of it (51). Medicare paid $25.66 per fill, versus $15.28 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 Oregon prescribers
Dr. Mcguire wrote 85 prescriptions for Potassium Chloride, about 1.5 times as often as the typical Oregon prescriber of it (56). Medicare paid $23.24 per fill, versus $23.50 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 blood clots (such as in deep vein thrombosis-DVT or pulmonary embolus-PE) and/or to prevent new clots from forming in your body.
Compared with Oregon prescribers
Dr. Mcguire wrote 71 prescriptions for Warfarin Sodium, about 1.8 times as often as the typical Oregon prescriber of it (40). Medicare paid $8.47 per fill, versus $12.12 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 combination medication is used to treat symptoms of Parkinson's disease or Parkinson-like symptoms (such as shakiness, stiffness, difficulty moving).
Compared with Oregon prescribers
Dr. Mcguire wrote 68 prescriptions for Carbidopa-Levodopa, about as often as the typical Oregon prescriber of it (65). Medicare paid $30.56 per fill, versus $39.71 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
This medication is used to treat certain mental/mood disorders (such as depression, panic attacks, obsessive compulsive disorder).
Compared with Oregon prescribers
Dr. Mcguire wrote 58 prescriptions for Fluoxetine Hcl, about 1.6 times as often as the typical Oregon prescriber of it (37). Medicare paid $20.71 per fill, versus $13.71 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
Furosemide is used to reduce extra fluid in the body (edema) caused by conditions such as heart failure, liver disease, and kidney disease.
Compared with Oregon prescribers
Dr. Mcguire wrote 55 prescriptions for Furosemide, about as often as the typical Oregon prescriber of it (61). Medicare paid $10.96 per fill, versus $6.84 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
Torsemide is used to reduce extra fluid in the body (edema) caused by conditions such as heart failure, liver disease, and kidney disease.
Compared with Oregon prescribers
Dr. Mcguire wrote 52 prescriptions for Torsemide, about 1.4 times as often as the typical Oregon prescriber of it (37). Medicare paid $33.14 per fill, versus $22.68 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 Oregon prescribers
Dr. Mcguire wrote 50 prescriptions for Tamsulosin Hcl, about 69% as often as the typical Oregon prescriber of it (72). Medicare paid $17.87 per fill, versus $17.43 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 help relieve moderate to severe pain.
Compared with Oregon prescribers
Dr. Mcguire wrote 49 prescriptions for Oxycodone Hcl, about as often as the typical Oregon prescriber of it (53). Medicare paid $18.60 per fill, versus $13.58 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
Simvastatin 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 Oregon prescribers
Dr. Mcguire wrote 45 prescriptions for Simvastatin, about 81% as often as the typical Oregon prescriber of it (56). Medicare paid $15.63 per fill, versus $9.99 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
Metoprolol is used with or without other medications to treat high blood pressure (hypertension).
Compared with Oregon prescribers
Dr. Mcguire wrote 40 prescriptions for Metoprolol Tartrate, about 84% as often as the typical Oregon prescriber of it (47). Medicare paid $21.72 per fill, versus $8.41 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 Oregon prescribers
Dr. Mcguire wrote 38 prescriptions for Ondansetron Hcl, about 1.4 times as often as the typical Oregon prescriber of it (28). Medicare paid $14.07 per fill, versus $13.27 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
This medication is used to treat depression.
Compared with Oregon prescribers
Dr. Mcguire wrote 36 prescriptions for Trazodone Hcl, about half as often as the typical Oregon prescriber of it (64). Medicare paid $24.12 per fill, versus $11.02 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
Carvedilol is used to treat high blood pressure and heart failure.
Compared with Oregon prescribers
Dr. Mcguire wrote 34 prescriptions for Carvedilol, about 66% as often as the typical Oregon prescriber of it (51). Medicare paid $19.74 per fill, versus $11.00 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
Lisinopril is used to treat high blood pressure.
Compared with Oregon prescribers
Dr. Mcguire wrote 34 prescriptions for Lisinopril, about 31% as often as the typical Oregon prescriber of it (111). Medicare paid $19.42 per fill, versus $8.73 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 Oregon prescribers
Dr. Mcguire wrote 31 prescriptions for Losartan Potassium, about 29% as often as the typical Oregon prescriber of it (107). Medicare paid $10.61 per fill, versus $11.59 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 Oregon prescribers
Dr. Mcguire wrote 30 prescriptions for Amlodipine Besylate, about 27% as often as the typical Oregon prescriber of it (109). Medicare paid $12.42 per fill, versus $8.23 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).
Compared with Oregon prescribers
Dr. Mcguire wrote 24 prescriptions for Escitalopram Oxalate, about half as often as the typical Oregon prescriber of it (40). Medicare paid $14.09 per fill, versus $13.34 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
Atenolol is used with or without other medications to treat high blood pressure (hypertension).
Compared with Oregon prescribers
Dr. Mcguire wrote 22 prescriptions for Atenolol, about 63% as often as the typical Oregon prescriber of it (35). Medicare paid $11.61 per fill, versus $9.61 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 laxative used to treat constipation.
Compared with Oregon prescribers
Dr. Mcguire wrote 22 prescriptions for Lactulose, about as often as the typical Oregon prescriber of it (21). Medicare paid $35.45 per fill, versus $27.31 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
Dabigatran is used to prevent stroke and harmful blood clots (such as in your legs or lungs) if you have a certain type of irregular heartbeat (atrial fibrillation).
Compared with Oregon prescribers
Dr. Mcguire wrote 20 prescriptions for Pradaxa, about 31% as often as the typical Oregon prescriber of it (64). Medicare paid $94.07 per fill, versus $242.92 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
Spironolactone is used to treat high blood pressure and heart failure.
Compared with Oregon prescribers
Dr. Mcguire wrote 19 prescriptions for Spironolactone, about half as often as the typical Oregon prescriber of it (41). Medicare paid $18.11 per fill, versus $10.75 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
This medication is used to treat certain mental/mood disorders (such as depression, anxiety).
Compared with Oregon prescribers
Dr. Mcguire wrote 18 prescriptions for Duloxetine Hcl, about 38% as often as the typical Oregon prescriber of it (48). Medicare paid $25.77 per fill, versus $26.63 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
Finasteride is used to shrink an enlarged prostate (benign prostatic hyperplasia or BPH) in adult men.
Compared with Oregon prescribers
Dr. Mcguire wrote 18 prescriptions for Finasteride, about 40% as often as the typical Oregon prescriber of it (45). Medicare paid $16.22 per fill, versus $14.08 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
Hydralazine is used with or without other medications to treat high blood pressure.
Compared with Oregon prescribers
Dr. Mcguire wrote 18 prescriptions for Hydralazine Hcl, about 66% as often as the typical Oregon prescriber of it (27). Medicare paid $19.12 per fill, versus $15.71 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
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 Oregon prescribers
Dr. Mcguire wrote 17 prescriptions for Eliquis, about 24% as often as the typical Oregon prescriber of it (70). Medicare paid $336.63 per fill, versus $1,003.37 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 Oregon prescribers
Dr. Mcguire wrote 17 prescriptions for Sertraline Hcl, about 33% as often as the typical Oregon prescriber of it (51). Medicare paid $13.57 per fill, versus $12.14 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
Alendronate is used to prevent and treat certain types of bone loss (osteoporosis) in adults.
Compared with Oregon prescribers
Dr. Mcguire wrote 16 prescriptions for Alendronate Sodium, about 34% as often as the typical Oregon prescriber of it (47). Medicare paid $13.48 per fill, versus $10.71 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
Insulin isophane is used with a proper diet and exercise program to control high blood sugar in people with diabetes.
Compared with Oregon prescribers
Dr. Mcguire wrote 16 prescriptions for Humulin N, about half as often as the typical Oregon prescriber of it (32). Medicare paid $56.79 per fill, versus $166.07 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 beta-blocker used to treat chest pain (angina), heart failure, and high blood pressure.
Compared with Oregon prescribers
Dr. Mcguire wrote 16 prescriptions for Metoprolol Succinate, about 17% as often as the typical Oregon prescriber of it (93). Medicare paid $10.10 per fill, versus $15.56 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 for certain patients who have symptoms of low blood pressure when standing.
Compared with Oregon prescribers
Dr. Mcguire wrote 16 prescriptions for Midodrine Hcl, about 80% as often as the typical Oregon prescriber of it (20). Medicare paid $154.51 per fill, versus $55.09 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 depression.
Compared with Oregon prescribers
Dr. Mcguire wrote 16 prescriptions for Nortriptyline Hcl, about 75% as often as the typical Oregon prescriber of it (21). Medicare paid $16.01 per fill, versus $16.87 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
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 Oregon prescribers
Dr. Mcguire wrote 16 prescriptions for Prednisone, about half as often as the typical Oregon prescriber of it (38). Medicare paid $9.71 per fill, versus $5.66 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
Clindamycin is used to treat a wide variety of bacterial infections.
Compared with Oregon prescribers
Dr. Mcguire wrote 15 prescriptions for Clindamycin Hcl, about 76% as often as the typical Oregon prescriber of it (20). Medicare paid $96.00 per fill, versus $9.45 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
Nystatin is used to treat fungal skin infections.
Compared with Oregon prescribers
Dr. Mcguire wrote 15 prescriptions for Nystatin, about 71% as often as the typical Oregon prescriber of it (21). Medicare paid $29.40 per fill, versus $20.51 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
Vancomycin is used to treat a certain intestinal condition (colitis) that may rarely happen after treatment with antibiotics.
Compared with Oregon prescribers
Dr. Mcguire wrote 15 prescriptions for Vancomycin Hcl, about 68% as often as the typical Oregon prescriber of it (22). Medicare paid $216.59 per fill, versus $111.04 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 Oregon prescribers
Dr. Mcguire wrote 14 prescriptions for Allopurinol, about 35% as often as the typical Oregon prescriber of it (40). Medicare paid $10.11 per fill, versus $12.52 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
Metformin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar.
Compared with Oregon prescribers
Dr. Mcguire wrote 14 prescriptions for Metformin Hcl, about 21% as often as the typical Oregon prescriber of it (66). Medicare paid $15.43 per fill, versus $10.21 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
Montelukast is used to control and prevent symptoms caused by asthma (such as wheezing and shortness of breath).
Compared with Oregon prescribers
Dr. Mcguire wrote 14 prescriptions for Montelukast Sodium, about 36% as often as the typical Oregon prescriber of it (39). Medicare paid $16.20 per fill, versus $13.82 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 diarrhea caused by the common bacteria known as E.
Compared with Oregon prescribers
Dr. Mcguire wrote 14 prescriptions for Xifaxan, about 65% as often as the typical Oregon prescriber of it (21). Medicare paid $1,614.34 per fill, versus $3,015.30 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 Oregon prescribers
Dr. Mcguire wrote 14 prescriptions for Zenpep, about 78% as often as the typical Oregon prescriber of it (18). Medicare paid $186.01 per fill, versus $3,191.43 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 Oregon prescribers
Dr. Mcguire wrote 12 prescriptions for Albuterol Sulfate Hfa, about 22% as often as the typical Oregon prescriber of it (56). Medicare paid $40.35 per fill, versus $32.53 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
Donepezil is used to treat confusion (dementia) related to Alzheimer's disease.
Compared with Oregon prescribers
Dr. Mcguire wrote 12 prescriptions for Donepezil Hcl, about 28% as often as the typical Oregon prescriber of it (42). Medicare paid $11.73 per fill, versus $19.08 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
This combination medication is used to relieve moderate to severe pain.
Compared with Oregon prescribers
Dr. Mcguire wrote 12 prescriptions for Hydrocodone-Acetaminophen, about 19% as often as the typical Oregon prescriber of it (63). Medicare paid $18.82 per fill, versus $18.80 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 help relieve severe ongoing pain (such as due to cancer).
Compared with Oregon prescribers
Dr. Mcguire wrote 12 prescriptions for Morphine Sulfate Er, about 35% as often as the typical Oregon prescriber of it (34). Medicare paid $23.32 per fill, versus $29.87 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 prevent or treat gout attacks (flares).
Compared with Oregon prescribers
Dr. Mcguire wrote 11 prescriptions for Colchicine, about half as often as the typical Oregon prescriber of it (19). Medicare paid $20.29 per fill, versus $45.56 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
Levetiracetam is used to treat seizures (epilepsy).
Compared with Oregon prescribers
Dr. Mcguire wrote 11 prescriptions for Levetiracetam, about 30% as often as the typical Oregon prescriber of it (37). Medicare paid $45.18 per fill, versus $35.02 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. Mcguire’s prescriptions
What does Dr. Mcguire prescribe most?
In 2024 Medicare Part D data, Dr. Mcguire's most prescribed medications were Levothyroxine Sodium (122), Atorvastatin Calcium (112) and Gabapentin (104).
How does Dr. Mcguire's prescribing compare with other Oregon prescribers?
Of the 50 medications with a state comparison, Dr. Mcguire prescribes 7 more often than the typical Oregon prescriber, 10 about as often and 33 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Dr. Mcguire 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 Oregon 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.
