Stephanie H. Chen, MD

Medicare activity in 2024

Official CMS public-use data for Stephanie H. Chen, 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.

Most frequent services

1. Ultrasonic guidance for blood vessel access (76937)45 services
2. Insertion of tube into internal neck artery for diagnosis or treatment with review by radiologist (36224)43 services
3. Insertion of tube into external neck artery for diagnosis or treatment with review by radiologist (36227)35 services
4. Occlusion of central nervous system or spinal cord artery (61624)29 services
5. Imaging of blood vessel (75898)27 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 cholesterol75%
• Stroke or mini-stroke58%
• Arthritis46%
• Anxiety37%
• Depression35%

Hospitals where Stephanie H. Chen works

Medicare's Facility Affiliation Data lists Stephanie H. Chen 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.

• Harborview Medical CenterSeattle, WA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 500064

Practice locations

Addresses where Stephanie H. Chen is enrolled with Medicare (CMS data updated October 2, 2026).

• 325 9th AveSeattle, WA 98104 (206) 731‑3000

Group practices

Medicare enrollment lists Stephanie H. Chen as a member of this group (CMS data updated October 2, 2026).

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

Specialties

• Neurosurgeryprimary

Find other Neurosurgery doctors in Washington →

Other neurosurgeons in Seattle

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

• Tyler T. Lazaro
• Anubhav Amin, MD
• Ryan C. Turner, MD
• Matthew J. Recker, MD
• Ascher Kaufmann, MD
• Ajay Ramnot, DO
• Robert H. Bonow, MD
• Chase H. Foster, MD

All neurosurgeons in Seattle →

Other clinicians in The Association of University Physicians

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

• Michelle C. Sabo, MD
• Lindsay A. Cunliffe
• Bijan J. Ghassemieh, MD
• Yewlin E. Chee, MD
• Charles D. Kenyon, DO
• Priya P. Shah, PA

Clinician information

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