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

Anesthesiology

Katherine O. Heller, MD

Works at hospitals in Seattle, WA · Washington

Summary

Dr. Katherine O. Heller, MD is an anesthesiologist at 1959 NE Pacific St, Seattle, WA 98195. Phone: (206) 598-4333. Accepts Medicare assignment. In 2024, Katherine O. Heller had 129 Original Medicare patients and 187 services. NPI 1912298365. 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: Anesthesiologist (Medicare lists Anesthesiology)
  • 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: University Of Washington School Of Medicine · graduated 2011 (15 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Katherine O. Heller, 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 Katherine O. Heller accept Medicare assignment?
Yes. Medicare's clinician data says Katherine O. Heller 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 Katherine O. Heller see?
In 2024, CMS data shows 129 Original Medicare patients and 187 services for Katherine O. Heller. This counts Original Medicare only and measures volume, not quality.
What is Katherine O. Heller's NPI number?
1912298365. 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 Katherine O. Heller, 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 patients129
Services billed to Medicare187
Different services or procedures41
Participating Medicare providerYes
Average age of these patients71

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)33 services
  2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)30 services
  3. Critical care, first 30-74 minutes (99291)15 services
  4. Anesthesia for other procedure on neck area (1 year or older) (00320)11 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 pressure75%
  • High cholesterol72%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)39%
  • Diabetes36%
  • Arthritis33%
  • Ischemic heart disease32%

Hospitals where Katherine O. Heller works

Medicare's Facility Affiliation Data lists Katherine O. Heller 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 Katherine O. Heller is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Katherine O. Heller 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 Anesthesiology doctors in Washington →

Other anesthesiologists in Seattle

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

All anesthesiologists 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 schoolUniversity Of Washington School Of Medicine
Graduation year2011 (15 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1912298365
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