Matthew A. Nguyen, MD

Medicare activity in 2024

Official CMS public-use data for Matthew A. Nguyen, 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)128 services
2. Hospital discharge day management, more than 30 minutes (99239)29 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%
• Chronic kidney disease58%
• Arthritis52%
• Heart failure52%
• Diabetes48%

Hospitals where Matthew A. Nguyen works

Medicare's Facility Affiliation Data lists Matthew A. Nguyen 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.

• Providence St Vincent Medical CenterPortland, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380004

Practice locations

Addresses where Matthew A. Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).

• 5050 NE Hoyt St, Suite 454Portland, OR 97213 (503) 215‑6405
• 9205 SW Barnes RdPortland, OR 97225 (503) 216‑2213
• 9205 SW Barnes Rd, Suite 20Portland, OR 97225 (503) 216‑2229

Group practices

Medicare enrollment lists Matthew A. Nguyen as a member of these groups (CMS data updated October 2, 2026).

• Providence Health and Services Oregon1,433 clinicians in the group
• Providence Health and Services - Oregon208 clinicians in the group

Specialties

• Internal Medicineprimary
• Pediatric Medicinealso

Find other Internal Medicine doctors in Oregon →

Other internal medicine doctors in Portland

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

• Leah B. Kalin, MD
• Michael Northrop, MD
• Anne M. Weinsoft, MD
• Melinda J. Muller, MD
• Leah C. Weinstein, MD
• Angela M. Gibbs, MD
• David C. Nazemi, MD
• Marie-Louise Dhulst, MD

All internal medicine doctors in Portland →

Other clinicians in Providence Health and Services Oregon

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

• Mohammad Hirzallah, MD
• Crispin H. Davies, MD
• Laura D. Milner, PSY
• Sohil R. Makwana, MD
• Armasabille Ermita, MD
• Brian S. Hough, 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