Shaun M. Duran, MD

Medicare activity in 2024

Official CMS public-use data for Shaun M. Duran, 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)45 services
2. Critical care, first 30-74 minutes (99291)40 services
3. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)35 services
4. Hospital discharge day management, more than 30 minutes (99239)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 cholesterol66%
• Anxiety56%
• Arthritis46%
• Depression44%
• Ischemic heart disease43%

Hospitals where Shaun M. Duran works

Medicare's Facility Affiliation Data lists Shaun M. Duran 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.

• Northern Light Mercy HospitalPortland, ME · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 200008

Practice locations

Addresses where Shaun M. Duran is enrolled with Medicare (CMS data updated October 2, 2026).

• 155 Rover River PkwyPortland, ME 04102 (207) 879‑3000
• 175 Fore River PkwyPortland, ME 04102 (207) 879‑3000
• 40 Park RdWestbrook, ME 04092 (207) 857‑8174

Group practices

Medicare enrollment lists Shaun M. Duran as a member of this group (CMS data updated October 2, 2026).

• Mercy Hospital301 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in Maine →

Other internal medicine doctors in Portland

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

• Christopher A. Wellins, MD
• Sean R. Lena, DO
• Joseph Benjamin M. Rote, MD
• Rebecca B. Hemphill, MD
• Rute S. Rothwell, MD
• Lesley B. Gordon, MD
• Melanie P. Fitzsimmons, MD
• Matthew S. Buttarazzi, MD

All internal medicine doctors in Portland →

Other clinicians in Mercy Hospital

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

• Aline Iskandar, MD
• Valerie K. Nye
• Sabrina Loring, NP
• James P. Theberge, MD
• Peter K. Carter, MD
• James A. Katz, 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