DR. SAMUEL GIBSON RAYNER M.D.
Prescription History 1982993606
Internal Medicine - Pulmonary Disease in Seattle, WA
What does Dr. Rayner prescribe?
In 2024, Dr. Rayner wrote 865 Medicare prescriptions for 14 medications. The most prescribed was Ambrisentan, with 213 prescriptions for 25 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. Rayner prescribes.
Medications 14 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 Washington prescribers.
What it is used for
Ambrisentan is used to treat high blood pressure in the lungs (pulmonary arterial hypertension).
Compared with Washington prescribers
Dr. Rayner wrote 213 prescriptions for Ambrisentan, about 4.7 times as often as the typical Washington prescriber of it (46). Medicare paid $2,590.22 per fill, versus $3,005.14 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
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 Washington prescribers
Dr. Rayner wrote 105 prescriptions for Torsemide, about 2.8 times as often as the typical Washington prescriber of it (38). Medicare paid $19.27 per fill, versus $21.27 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
Sildenafil is used to treat male sexual function problems (impotence or erectile dysfunction-ED).
Compared with Washington prescribers
Dr. Rayner wrote 103 prescriptions for Sildenafil Citrate, about 5 times as often as the typical Washington prescriber of it (21). Medicare paid $104.29 per fill, versus $97.46 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 a mineral supplement used to treat or prevent low amounts of potassium in the blood.
Compared with Washington prescribers
Dr. Rayner wrote 91 prescriptions for Potassium Chloride, about 1.8 times as often as the typical Washington prescriber of it (50). Medicare paid $13.50 per fill, versus $21.39 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
Selexipag is used to treat high blood pressure in the lungs (pulmonary arterial hypertension-PAH).
Compared with Washington prescribers
Dr. Rayner wrote 87 prescriptions for Uptravi, about 1.9 times as often as the typical Washington prescriber of it (46). Medicare paid $21,325.91 per fill, versus $22,935.38 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
Tadalafil is used to treat male sexual function problems (impotence or erectile dysfunction-ED).
Compared with Washington prescribers
Dr. Rayner wrote 59 prescriptions for Tadalafil, about 2.6 times as often as the typical Washington prescriber of it (23). Medicare paid $653.11 per fill, versus $366.60 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 a type of high blood pressure in the lungs (pulmonary arterial hypertension).
Compared with Washington prescribers
Dr. Rayner wrote 44 prescriptions for Tyvaso Dpi, about 1.3 times as often as the typical Washington prescriber of it (34). Medicare paid $22,599.48 per fill, versus $23,225.45 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
Macitentan is used to treat high blood pressure in the lungs (pulmonary arterial hypertension).
Compared with Washington prescribers
Dr. Rayner wrote 43 prescriptions for Opsumit, about 81% as often as the typical Washington prescriber of it (53). Medicare paid $12,763.09 per fill, versus $12,604.11 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
Riociguat is used to treat high blood pressure in the lungs (pulmonary hypertension).
Compared with Washington prescribers
Dr. Rayner wrote 28 prescriptions for Adempas, about 82% as often as the typical Washington prescriber of it (34). Medicare paid $12,222.98 per fill, versus $13,737.17 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 a type of high blood pressure in the lungs (pulmonary arterial hypertension).
Compared with Washington prescribers
Dr. Rayner wrote 24 prescriptions for Orenitram Er, about 1.2 times as often as the typical Washington prescriber of it (20). Medicare paid $15,448.84 per fill, versus $11,644.30 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
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 Washington prescribers
Dr. Rayner wrote 22 prescriptions for Furosemide, about 38% as often as the typical Washington prescriber of it (59). Medicare paid $4.48 per fill, versus $6.29 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 Washington prescribers
Dr. Rayner wrote 21 prescriptions for Spironolactone, about half as often as the typical Washington prescriber of it (41). Medicare paid $5.65 per fill, versus $9.91 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
Bosentan is used to treat high blood pressure in the lungs (pulmonary arterial hypertension).
Compared with Washington prescribers
Dr. Rayner wrote 13 prescriptions for Bosentan, about 87% as often as the typical Washington prescriber of it (15). Medicare paid $1,244.53 per fill, versus $1,306.69 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
Nifedipine is used alone or in combination with other drugs to treat high blood pressure (hypertension).
Compared with Washington prescribers
Dr. Rayner wrote 12 prescriptions for Nifedipine Er, about half as often as the typical Washington prescriber of it (20). Medicare paid $26.57 per fill, versus $25.33 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. Rayner’s prescriptions
What does Dr. Rayner prescribe most?
In 2024 Medicare Part D data, Dr. Rayner's most prescribed medications were Ambrisentan (213), Torsemide (105) and Sildenafil Citrate (103).
How does Dr. Rayner's prescribing compare with other Washington prescribers?
Of the 14 medications with a state comparison, Dr. Rayner prescribes 7 more often than the typical Washington prescriber, 4 about as often and 3 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Dr. Rayner 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 Washington 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.
