Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Medical Oncology

Vivian G. Oehler, MD

Works at hospitals in Seattle, WA · Washington

Summary

Dr. Vivian G. Oehler, MD is an oncologist at 1959 NE Pacific St, Seattle, WA 98195. Phone: (206) 598-4333. Accepts Medicare assignment. In 2024, Vivian G. Oehler had 75 Original Medicare patients and 208 services. NPI 1619198991. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Oncologist (Medicare lists Medical Oncology)
  • Address: 1959 NE Pacific St, Seattle, WA 98195 · Directions
  • Phone: (206) 598‑4333
  • Medicare: Accepts Medicare assignment
  • Hospital: University of Washington Medical Center
  • Group practice: The Association of University Physicians
  • Medical school: Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University · graduated 1997 (29 years since medical school)
  • Gender (as listed): Female
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Vivian G. Oehler, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Vivian G. Oehler accept Medicare assignment?
Yes. Medicare's clinician data says Vivian G. Oehler accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Vivian G. Oehler see?
In 2024, CMS data shows 75 Original Medicare patients and 208 services for Vivian G. Oehler. This counts Original Medicare only and measures volume, not quality.
What is Vivian G. Oehler's NPI number?
1619198991. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Vivian G. Oehler, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients75
Services billed to Medicare208
Different services or procedures13
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)82 services
  2. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)14 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure73%
  • High cholesterol68%
  • Chronic kidney disease36%
  • Arthritis29%
  • Ischemic heart disease28%
  • Atrial fibrillation28%

Hospitals where Vivian G. Oehler works

Medicare's Facility Affiliation Data lists Vivian G. Oehler at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Vivian G. Oehler is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Vivian G. Oehler as a member of this group (CMS data updated October 2, 2026).

  • The Association of University Physicians3,535 clinicians in the group

Specialties

Find other Medical Oncology doctors in Washington →

Other oncologists in Seattle

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

All oncologists in Seattle →

Other clinicians in The Association of University Physicians

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolClvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University
Graduation year1997 (29 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1619198991
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 October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians