Nathaniel I. Sugiyama, MD

Medicare activity in 2024

Official CMS public-use data for Nathaniel I. Sugiyama, 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.

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 cholesterol71%
• High blood pressure69%
• Arthritis53%
• Diabetes40%
• Atrial fibrillation31%
• Chronic kidney disease27%

Hospitals where Nathaniel I. Sugiyama works

Medicare's Facility Affiliation Data lists Nathaniel I. Sugiyama 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.

• Adventist Health PortlandPortland, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380060
• University of Vermont - Fletcher Allen Health CareBurlington, VT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 470003

Practice locations

Addresses where Nathaniel I. Sugiyama is enrolled with Medicare (CMS data updated October 2, 2026).

• 10123 SE Market StPortland, OR 97216 (503) 257‑2500
• 111 Colchester AveBurlington, VT 05401 (802) 847‑0000
• 790 College Prk Way, PhysiatryColchester, VT 05446 (802) 847‑0318

Group practices

Medicare enrollment lists Nathaniel I. Sugiyama as a member of these groups (CMS data updated October 2, 2026).

• University of Vermont Medical Center Inc1,208 clinicians in the group
• Portland Adventist Medical Center271 clinicians in the group

Specialties

• Anesthesiologyprimary

Find other Anesthesiology doctors in Oregon →

Other anesthesiologists in Portland

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

• Jacob Anderson, MD
• Ara Samra, MD
• Andrew Corcoran, MD
• Brian J. Magnuson, MD
• August W. Chang, MD
• Elliza M. Chen, MD
• Lesley A. Raphael, MD
• Matthew C. Chen, MD

All anesthesiologists in Portland →

Other clinicians in University of Vermont Medical Center Inc

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

• Amie S. Frederick
• Lauren K. Macnee
• Charles J. Schmitt, MD
• Mark K. Fung, MD
• Fatemeh S. Sweeney, MD
• Jason D. Brazelton, MD

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