Our Doctors

Dr. Anita Knudson

Owner/Dr.

Dr. Knudson completed her undergraduate work at SUNY at Stonybrook in New York. She received her veterinary degree from Colorado State University Veterinary School in 1993. She has worked in the Boulder-Longmont area since graduation. Dr Knudson opened Coal Ridge Animal Hospital on October 1, 2001. In addition to practicing small animal medicine she enjoys volunteering in the local community. She has set up a program to assist the local municipalities with the feral cat population and provide care for the local police dogs.

Dr. Lindsay Birrenbach

Associate Dr.

Dr. Lindsay Birrenbach (formally Bollacker) was born and raised in Ft. Collins, CO. She attended Colorado State University and received her B.S. in Biology in 2003 and her N.S. in Biomedical Science in 2004. She then received her degree in Veterinary Medicine from Kansas State University in 2008. Dr. Birrenbach has a strong interest in integrative medicine and was certified in Veterinary Medical Acupuncture in 2009. She also has special interest in chronic pain management.



Dr. Deb Lanzi

Dr.

Dr. Deb Lanzi was born and raised in Maryland, moving to Colorado in 2000. She completed her undergraduate degree at the University of Colorado at Boulder in 2004, with a double major in Kinesiology and Applied Physiology and Environmental Biology. After working in various areas of human health and fitness, she completed a dual degree at Colorado State University, earning her Masters of Business Administration (2014) and Doctorate of Veterinary Medicine (2017). Dr. Lanzi joins the Coal Ridge team as a new doctor and is excited to see where this new career will take her.

Associations

AAHA American Animal Hospital Association
ABKA American Boarding Kennels Association
ARAV Association of Reptilian and Amphibian Veterinarians
AVMA American Veterinary Medical Association
CVMA Colorado Veterinary Medical Association
LPVMA Longs Peak Veterinary Medical Association

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Your Pet is in Good Hands

Our Values
Statements

  • Quality Pet Care
  • Community-Friendly Hospital
  • Friendly & Informative Staff
  • We Treat All Animals Like Our Own
  • Comfortable and Spacious Boarding Facilities