Our Englewood Team

Bethany Wallace, DO Physician

Irit Gordon, MD Physician

Irit Gordon, M.D., has more than 30 years of emergency medicine experience. After attending the Albert Einstein College of Medicine, she completed her residency in Boston Hospital’s Department of Internal Medicine. She has been licensed in Colorado since 1984. Dr. Gordon had worked as an emergency staff physician at seven hospitals across the state. Dr. Gordon is also a Fellow of the American College of Emergency Physicians and a member of the Colorado Medical Society.

Juan Miranda, MD Physician

Martin Strand, MD Physician

Staff Physician

Ralph Holsworth, DO Physician

Robert Schiermeyer, MD Physician

Robert Schiermeyer, M.D., has nearly 20 years of emergency room experience as a staff physician in 10 hospitals, seven of which are in Colorado. Dr. Schiermeyer attended the F. Edward Hebert School of Medicine at the Uniformed Services University of the Health Sciences in Bethesda, Maryland, and completed his residency in Emergency Medicine at Wilford Hall Medical Center in San Antonio. Dr. Schiermeyer has been board certified by the American Board of Emergency Medicine since 1994. In addition to medical practice, he is a former clinical instructor of Emergency Medicine at Wright State University School of Medicine. Dr. Schiermeyer also attended the United States Air Force Academy and is a former pilot.

Samantha Matney, MD Physician

Dr. Matney was born and raised in a small town in Northeast Washington. She attended Western New England College in Springfield Massachusetts, where she received a BS in biology and minors in mathematics and chemistry. After graduation Dr. Matney work for a private ambulance company for a few years as an EMT. She then went to Saba University School of Medicine where she received her M.D. and a masters in HBOT. Dr. Matney completed her residency in Family Medicine at the University of Connecticut and is board certified in Family Medicine. In her free time she enjoys riding her horse and hiking with her dogs. She is excited to be working with the greater Englewood community and welcomes you to AFC Urgent Care of Englewood.

Stanley Siefer, MD Physician

Stanley Siefer, M.D., is board certified in Family Medicine and Emergency Medicine. Prior to joining DEE, Dr. Siefer worked as an emergency physician at the Medical Center of Aurora for 37 years. His experience also includes director of emergency medicine at Presbyterian/St. Luke’s Medical Center and medical advisor for emergency medical dispatch for the Governor’s Advisory Council. In addition, Dr. Siefer formerly served in the U.S. Public Heath Service, where he was assigned to the U.S. Coast Guard and to the Indian Service. Dr. Siefer attended the Pritzger School of Medicine at the University of Chicago and completed his residency in the Department of Family Practice in the University of Colorado’s School of Medicine. He is a Fellow of the American College of Emergency Physicians.

Annie R Front Desk Assistant

Andrea Adams Clinic Manager

Alison Knowlton Managing Director

Alison has served AFC since 2011 and is passionate about leading her clinical and management team in providing accessible, economical and quality healthcare to the Englewood and surrounding communities. She graduated from Texas Tech University in 2009 and is proud Red Raider! In her free time she enjoys hiking in the beautiful Colorado mountains and spending time with her family.

Chris W X-Ray Technician

Daisy V X-Ray Technician

Juan G X-Ray Technician