Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

WENJIA SUN MD
Prescription History 1992489181
Internal Medicine in Monroe, WA

Active since June 09, 2023PECOS EnrolledAccepts Medicare Assignment
19200 N KELSEY ST, MONROE, WA 98272(360) 794-9101(360) 805-4759 Get Directions

NPPES record last updated: September 23, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 23, 2026, Jun 9, 2023 (2 updates tracked since 2023).

What does Dr. Sun prescribe?

In 2024, Dr. Sun wrote 167 Medicare prescriptions for 10 medications. The most prescribed was Atorvastatin Calcium, with 34 prescriptions for 11 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. Sun prescribes.

10 medications · 2024 Medicare Part D

Medications 10 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.

Questions about Dr. Sun’s prescriptions

What does Dr. Sun prescribe most?

In 2024 Medicare Part D data, Dr. Sun's most prescribed medications were Atorvastatin Calcium (34), Amlodipine Besylate (23) and Risperidone (22).

How does Dr. Sun's prescribing compare with other Washington prescribers?

Of the 10 medications with a state comparison, Dr. Sun prescribes 10 less often than the typical Washington prescriber. Volume reflects practice size as well as prescribing habits.

Does this list show every medication Dr. Sun 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.

SourceWhat it provides hereData year
CMS Medicare Part D Prescribers by Provider and DrugEach 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 DashboardWhat 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.