All of our vein specialists near Denver and Pueblo, Colorado are Diplomates of The American Board of Venous and Lymphatic Medicine (ABVLM). Gordon F. Gibbs, MD Gordon F. Gibbs, MD and his wife Erin Reilly Gibbs opened the first American Vein & Vascular Institute (formerly Rocky Mountain Vein Institute) in 2009 located in Pueblo, Colorado. The network of vein and arterial centers has since grown to seven locations with more than 50 employees in Colorado. More about Dr. Gibbs Timothy Cawlfield, MD Timothy Cawlfield, MD, is a phlebologist specializing in the treatment of vein disease at American Vein & Vascular Institute. As a general practitioner licensed to practice medicine in Colorado with specialties in vascular disease and family medicine, Dr. Cawlfield has a hospital affiliation with Parkview Medical Center in Pueblo, Colo. More about Dr. Cawlfield Melissa Dunn, MD Melissa Dunn, MD is a phlebologist at American Vein & Vascular Institute. Dunn received her phlebology training through the fellowship program developed by Dr. Gordon Gibbs, American Vein & Vascular Institute Founder and Chief Medical Executive. More about Dr. Dunn Kendra Duckstein, AGNP, RN Phlebologist Kendra Duckstein, AGNP, RN is a phlebologist at American Vein & Vascular Institute. Duckstein is also a board-certified Nurse Practitioner with more than 16 years of experience in direct patient care as a RN. More about Kendra Devin Ariel Sanchez, PA-C Phlebologist Devin Sanchez, PA-C, is a Phlebologist at American Vein & Vascular Institute. Ms. Sanchez has been practicing as a certified PA since 2012 and earned her Masters of Science in Physician Assistant Studies from South University Physician Assistant Program. She also holds a Masters in Business Administration from Webster University in Jacksonville, FL. More about Devin Julie Current, MS, PA-C Phlebologist Julie Current, MS, PA-C, is a phlebologist at American Vein & Vascular Institute. Current received her phlebology training through the fellowship program developed by Dr. Gordon Gibbs, American Vein & Vascular Institute Founder and Chief Medical Executive. More about Julie Jennifer Medina, FNP, AGACNP Phlebologist Jennifer Medina, FNP, AGACNP, is a phlebologist at American Vein & Vascular Institute. Medina received her training through the fellowship program developed and led by Dr. Gordon Gibbs, American Vein & Vascular Institute Founder and Chief Medical Executive. More about Jennifer Angela Cole, MS, PA-C Phlebologist Angela Cole, MS, PA-C, is a phlebologist at American Vein & Vascular Institute. Cole earned a Bachelor of Science in Cell Biology and Neuroscience from Montana State University and a Master of Science in Physician Assistant Studies from Rosalind Franklin University of Medicine and Science. More about Angela Nicole Gunderson, MMS, PA-C Phlebologist Nicole Gunderson, is a phlebologist at American Vein and Vascular Institute. Gunderson received her Masters of Medical Science in Physician Assistant Studies from Keiser University. Gunderson received her training through the fellowship program developed and led by Dr. Gordon Gibbs, American Vein & Vascular Institute Founder and Chief Medical Executive. More about Nicole Nathan Gasper, AGACNP-BC, FNP-B Phlebologist Nathan Gasper AGACNP-BC, FNP-B, is a phlebologist at American Vein and Vascular Institute. Gasper received his phlebology training through the fellowship program developed by Dr. Gordon Gibbs, American Vein & Vascular Institute Founder and Chief Medical Executive. More about Nathan