KRISTINA KATARINA JOHNSTONE ARNP
Prescription History 1578282992
Nurse Practitioner - Acute Care in Coupeville, WA
What does Kristina Johnstone prescribe?
In 2024, Kristina Johnstone wrote 617 Medicare prescriptions for 21 medications. The most prescribed was Atorvastatin Calcium, with 82 prescriptions for 28 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 Kristina Johnstone prescribes.
Medications 21 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
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 Washington prescribers
Kristina Johnstone wrote 82 prescriptions for Atorvastatin Calcium, about half as often as the typical Washington prescriber of it (166). Medicare paid $17.23 per fill, versus $11.43 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
Losartan is used to treat high blood pressure (hypertension) and to help protect the kidneys from damage due to diabetes.
Compared with Washington prescribers
Kristina Johnstone wrote 79 prescriptions for Losartan Potassium, about 77% as often as the typical Washington prescriber of it (102). Medicare paid $14.06 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
Lisinopril is used to treat high blood pressure.
Compared with Washington prescribers
Kristina Johnstone wrote 76 prescriptions for Lisinopril, about 73% as often as the typical Washington prescriber of it (105). Medicare paid $12.86 per fill, versus $8.60 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 high blood pressure.
Compared with Washington prescribers
Kristina Johnstone wrote 51 prescriptions for Hydrochlorothiazide, about 90% as often as the typical Washington prescriber of it (57). Medicare paid $6.92 per fill, versus $5.34 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
Amlodipine is used with or without other medications to treat high blood pressure.
Compared with Washington prescribers
Kristina Johnstone wrote 37 prescriptions for Amlodipine Besylate, about 35% as often as the typical Washington prescriber of it (106). Medicare paid $9.17 per fill, versus $7.92 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
This medication is a beta-blocker used to treat chest pain (angina), heart failure, and high blood pressure.
Compared with Washington prescribers
Kristina Johnstone wrote 36 prescriptions for Metoprolol Succinate, about 40% as often as the typical Washington prescriber of it (91). Medicare paid $14.92 per fill, versus $14.75 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
Levothyroxine is used to treat an underactive thyroid (hypothyroidism).
Compared with Washington prescribers
Kristina Johnstone wrote 27 prescriptions for Levothyroxine Sodium, about 23% as often as the typical Washington prescriber of it (116). Medicare paid $15.15 per fill, versus $11.18 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 Washington prescribers
Kristina Johnstone wrote 26 prescriptions for Gabapentin, about 36% as often as the typical Washington prescriber of it (72). Medicare paid $20.60 per fill, versus $19.65 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 Washington prescribers
Kristina Johnstone wrote 25 prescriptions for Albuterol Sulfate Hfa, about half as often as the typical Washington prescriber of it (51). Medicare paid $35.74 per fill, versus $29.37 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
Metoprolol is used with or without other medications to treat high blood pressure (hypertension).
Compared with Washington prescribers
Kristina Johnstone wrote 23 prescriptions for Metoprolol Tartrate, about half as often as the typical Washington prescriber of it (43). Medicare paid $16.83 per fill, versus $8.03 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 Washington prescribers
Kristina Johnstone wrote 18 prescriptions for Tamsulosin Hcl, about 26% as often as the typical Washington prescriber of it (70). Medicare paid $17.36 per fill, versus $16.56 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
Rosuvastatin 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 Washington prescribers
Kristina Johnstone wrote 17 prescriptions for Rosuvastatin Calcium, about 21% as often as the typical Washington prescriber of it (81). Medicare paid $9.58 per fill, versus $14.43 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
Allopurinol is used to treat gout and certain types of kidney stones.
Compared with Washington prescribers
Kristina Johnstone wrote 15 prescriptions for Allopurinol, about 38% as often as the typical Washington prescriber of it (39). Medicare paid $26.09 per fill, versus $11.44 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 Washington prescribers
Kristina Johnstone wrote 15 prescriptions for Simvastatin, about 29% as often as the typical Washington prescriber of it (52). Medicare paid $7.98 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 used to treat depression.
Compared with Washington prescribers
Kristina Johnstone wrote 15 prescriptions for Trazodone Hcl, about 25% as often as the typical Washington prescriber of it (61). Medicare paid $12.88 per fill, versus $10.78 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 Washington prescribers
Kristina Johnstone wrote 14 prescriptions for Metformin Hcl, about 22% as often as the typical Washington prescriber of it (63). Medicare paid $18.94 per fill, versus $9.63 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
This medication is used to treat certain mental/mood disorders (such as depression, panic attacks, obsessive compulsive disorder).
Compared with Washington prescribers
Kristina Johnstone wrote 13 prescriptions for Fluoxetine Hcl, about 38% as often as the typical Washington prescriber of it (34). Medicare paid $4.27 per fill, versus $12.85 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 Washington prescribers
Kristina Johnstone wrote 13 prescriptions for Metformin Hcl Er, about 25% as often as the typical Washington prescriber of it (51). Medicare paid $25.16 per fill, versus $10.77 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
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 Washington prescribers
Kristina Johnstone wrote 13 prescriptions for Sertraline Hcl, about 26% as often as the typical Washington prescriber of it (50). Medicare paid $11.02 per fill, versus $11.19 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 Washington prescribers
Kristina Johnstone wrote 11 prescriptions for Duloxetine Hcl, about 25% as often as the typical Washington prescriber of it (44). Medicare paid $24.71 per fill, versus $26.10 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 Washington prescribers
Kristina Johnstone wrote 11 prescriptions for Escitalopram Oxalate, about 30% as often as the typical Washington prescriber of it (37). Medicare paid $4.28 per fill, versus $13.03 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
Questions about Kristina Johnstone’s prescriptions
What does Kristina Johnstone prescribe most?
In 2024 Medicare Part D data, Kristina Johnstone's most prescribed medications were Atorvastatin Calcium (82), Losartan Potassium (79) and Lisinopril (76).
How does Kristina Johnstone's prescribing compare with other Washington prescribers?
Of the 21 medications with a state comparison, Kristina Johnstone prescribes 2 about as often than the typical Washington prescriber and 19 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Kristina Johnstone 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.
