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Medical Oncology

Tina M. Passalaris, MD

Works at hospitals in Forks, WA · Port Angeles, WA · Everett, WA … · Washington

Summary

Dr. Tina M. Passalaris, MD is an oncologist at 1221 Madison St, Suite 1020, Seattle, WA 98104. Phone: (206) 215-2658. Accepts Medicare assignment. In 2024, Tina M. Passalaris had 127 Original Medicare patients and 339 services. NPI 1508951864. 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.

From official Medicare data

This page shows what Medicare's official clinician data says about Tina M. Passalaris, 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 Tina M. Passalaris accept Medicare assignment?
Yes. Medicare's clinician data says Tina M. Passalaris 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 Tina M. Passalaris see?
In 2024, CMS data shows 127 Original Medicare patients and 339 services for Tina M. Passalaris. This counts Original Medicare only and measures volume, not quality.
What is Tina M. Passalaris's NPI number?
1508951864. 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 Tina M. Passalaris, 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 patients127
Services billed to Medicare339
Different services or procedures17
Participating Medicare providerYes
Average age of these patients76

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)112 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)93 services
  3. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)35 services
  4. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)22 services
  5. Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)21 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 cholesterol67%
  • Arthritis50%
  • Chronic kidney disease46%
  • Ischemic heart disease31%
  • Atrial fibrillation28%

Hospitals where Tina M. Passalaris works

Medicare's Facility Affiliation Data lists Tina M. Passalaris 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.

  • Forks Community HospitalForks, WA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 501325
  • Olympic Medical CenterPort Angeles, WA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 500072
  • Providence Regional Medical Center EverettEverett, WA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 500014
  • Swedish Edmonds HospitalEdmonds, WA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 500026
  • Swedish Medical CenterSeattle, WA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 500027

Practice locations

Addresses where Tina M. Passalaris is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.

Group practices

Medicare enrollment lists Tina M. Passalaris as a member of these groups (CMS data updated October 2, 2026).

  • Swedish Health Services1,037 clinicians in the group
  • Optum Care Washington PLLC683 clinicians in the group
  • Olympic Medical Physicians110 clinicians in the group
  • Clallam County Public Hospital District No 133 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 Swedish Health Services

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

Clinician information

CredentialMD
Medical schoolNew York University School Of Medicine
Graduation year1992 (34 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1508951864
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