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Pathology

William D. Ryan, MD

Works at hospitals in Newberg, OR · Portland, OR · Seaside, OR … · Oregon

Summary

William D. Ryan, MD (Pathology) is listed by Medicare at 5 hospitals in Newberg, OR, Portland, OR and Seaside, OR and other places. NPI 1659694735. 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 William D. Ryan, 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

PathologyPrimary specialty
YesAccepts Medicare assignment
20Years since medical school (graduated 2006)
George Washington University School Of MedicineMedical school
MaleGender (as listed)
Providence Health and Services - OregonGroup practice (+5 more)

Quick answers

Which hospitals does William D. Ryan work at?
Medicare's official clinician data lists William D. Ryan at 5 hospitals: Providence Newberg Medical Center, Providence Portland Medical Center, Providence Seaside Hospital, Providence St Vincent Medical Center and Providence Willamette Falls Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does William D. Ryan see patients?
Medicare's clinician data lists 9 practice locations, including Newberg, OR, Milwaukie, OR and Canby, OR. Call before your visit to confirm the address.
What is William D. Ryan's specialty?
Medicare lists Pathology as the primary specialty.
Does William D. Ryan accept Medicare assignment?
Yes. Medicare's clinician data says William D. Ryan 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 William D. Ryan?
(503) 537-1555, as listed in official Medicare / NPI Registry data.
What is William D. Ryan's NPI number?
1659694735. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where William D. Ryan works

Medicare's Facility Affiliation Data lists William D. Ryan 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 William D. Ryan is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 9; the Medicare profile lists all.

Group practices

Medicare enrollment lists William D. Ryan as a member of these groups (CMS data updated 2026-10-02).

  • Providence Health and Services - Oregon208 clinicians in the group
  • Providence Health and Services - Oregon191 clinicians in the group
  • Providence Health and Services Oregon97 clinicians in the group
  • Providence Health and Services Oregon82 clinicians in the group
  • Providence Health and Services - Oregon62 clinicians in the group
  • Providence Health and Services Oregon53 clinicians in the group

Specialties

Find other Pathology doctors in Oregon →

Other pathologists in Newberg

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

All pathologists in Newberg →

Clinician information

CredentialMD
Medical schoolGeorge Washington University School Of Medicine
Graduation year2006
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1659694735
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