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Internal Medicine

Stevie Mazyck, MD

Works at hospitals in Heppner, OR · Walla Walla, WA · Pendleton, OR … · Oregon, Washington

Summary

Stevie Mazyck, MD (Internal Medicine) is listed by Medicare at 4 hospitals in Heppner, OR, Walla Walla, WA and Pendleton, OR and other places. NPI 1902835697. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Stevie Mazyck, 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

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
26Years since medical school (graduated 2000)
Medical University Of South Carolina College Of MedicineMedical school
MaleGender (as listed)
Providence Health and Services - WashingtonGroup practice

Quick answers

Which hospitals does Stevie Mazyck work at?
Medicare's official clinician data lists Stevie Mazyck at 4 hospitals: Pioneer Memorial Hospital, Providence St Mary Medical Center, St Anthony Hospital and Wallowa Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Stevie Mazyck see patients?
Medicare's clinician data lists 3 practice locations, including Everett, WA and Walla Walla, WA. Call before your visit to confirm the address.
What is Stevie Mazyck's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Stevie Mazyck accept Medicare assignment?
Yes. Medicare's clinician data says Stevie Mazyck 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 Stevie Mazyck?
(509) 897-3333, as listed in official Medicare / NPI Registry data.
What is Stevie Mazyck's NPI number?
1902835697. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Stevie Mazyck works

Medicare's Facility Affiliation Data lists Stevie Mazyck at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Stevie Mazyck is enrolled with Medicare (CMS data updated 2026-10-02).

  • 1321 Colby AveEverett, WA 98201
  • 380 Chase AveWalla Walla, WA 99362 (509) 897‑3333
  • 401 W Poplar StWalla Walla, WA 99362

Group practices

Medicare enrollment lists Stevie Mazyck as a member of this group (CMS data updated 2026-10-02).

  • Providence Health and Services - Washington270 clinicians in the group

Specialties

Find other Internal Medicine doctors in Washington →

Other internal medicine doctors in Everett

Clinicians with the same Medicare primary specialty in Everett, WA — not a recommendation.

All internal medicine doctors in Everett →

Clinician information

CredentialMD
Medical schoolMedical University Of South Carolina College Of Medicine
Graduation year2000
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1902835697
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. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians