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Nurse Practitioner

Michael C. Johnstone, NP

Sees patients in Portland, OR · Oregon

Summary

Michael C. Johnstone, NP (Nurse Practitioner) is enrolled with Medicare at 1 practice location in Portland, OR. NPI 1811780380. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

Call(503) 889‑2500 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Michael C. Johnstone, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

1Practice location
Nurse PractitionerPrimary specialty
YesAccepts Medicare assignment
2026Graduation year
MaleGender (as listed)
Cascadia HealthGroup practice

Quick answers

Where does Michael C. Johnstone see patients?
Medicare's clinician data lists 1 practice location in Portland, OR. Call before your visit to confirm the address.
What is Michael C. Johnstone's specialty?
Medicare lists Nurse Practitioner as the primary specialty.
Does Michael C. Johnstone accept Medicare assignment?
Yes. Medicare's clinician data says Michael C. Johnstone accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Michael C. Johnstone?
(503) 889-2500, as listed in official Medicare / NPI Registry data.
What is Michael C. Johnstone's NPI number?
1811780380. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Michael C. Johnstone is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Michael C. Johnstone as a member of this group (CMS data updated 2026-10-02).

  • Cascadia Health55 clinicians in the group

Specialties

Find other clinicians: Nurse Practitioner, Oregon →

Other nurse practitioners in Portland

Clinicians with the same Medicare primary specialty in Portland, OR — not a recommendation.

All nurse practitioners in Portland →

Clinician information

CredentialNP
Graduation year2026
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1811780380
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians