Undergraduate Education:
Bachelor of Science, Cornell University 
2007-2010

Master of Science, University of Rochester
2013-2014

Medical Education:
Doctor of Medicine, University of Rochester 2010-2015

Emergency Medicine Residency, Thomas Jefferson University Hospital 
2015-2018

Family Medicine Residency, HealthONE Family Medicine
2020-2023
  
Board Certification:
American Board of Family Medicine
2023
Catherine Marmillo, MD

Office Locations:

Yampa Valley Medical Assoc / Steamboat Springs
940 Central Park Dr.  Suite 100
Steamboat Springs, Colorado 80487

Yampa Valley Medical Assoc / Hayden
150 West Jackson Street
Hayden, Colorado 81639

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