Erin S. Marcum, MD

Practice locations

Addresses where Erin S. Marcum is enrolled with Medicare (CMS data updated October 2, 2026).

• 200 Emempla Circle, Kp Intermountain Health Good Samaritan HospLafayette, CO 80026 (303) 338‑4545

Group practices

Medicare enrollment lists Erin S. Marcum as a member of this group (CMS data updated October 2, 2026).

• Colorado Permanente Medical Group PC1,327 clinicians in the group

Specialties

• Internal Medicineprimary
• Hospitalistalso

Find other Internal Medicine doctors in Colorado →

Other internal medicine doctors in Lafayette

Clinicians with the same Medicare primary specialty in Lafayette, CO — not a recommendation.

• Michael R. Williams, MD
• Richard Tsai, MD
• Sara A. Scannell, MD
• Christopher M. Slater, MD
• Tricia L. Yeo, MD
• Jay K. Guiter, DO
• Jolene A. Washington, DO
• David S. Lee, MD

All internal medicine doctors in Lafayette →

Other clinicians in Colorado Permanente Medical Group PC

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

• Michael R. Williams, MD
• Cristina F. Conklin, MD
• Jennifer L. Dorosz, MD
• Muk Chun Yan, DO
• Jose M. Sanchez, MD
• Jamie W. Lam, 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. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
3. Medicare Care Compare — official Medicare tool to look up clinicians