Mother Lode Veterinary Hospital / 11509 La Barr Meadows Road / Grass Valley, CA 95949 / (530) 272-6651

Our Veterinarians

Timothy Van Geem, DVM, PhD/Owner

Dr. Tim Van Geem graduated from Kansas State Veterinary College in 1987. Dr. Van Geem has a Master of Science in Biology and PhD in veterinary/medical entomology but he became frustrated with research and followed his dreams, returning to veterinary school. After graduation, he completed an internship in surgery in Las Vegas.

Dr. Van Geem practiced in the San Francisco area for six years, dividing his time between general practice and critical care. During that period, he developed a special interest in dentistry and surgery. He purchased Mother Lode Veterinary Hospital in 1994, and for the next five years he also provided referral dentistry services for Loomis Basin Veterinary Hospital, splitting his time between the two facilities. He has been a member of the American Veterinary Dental Society since 1994 and continues to provide advanced veterinary dentistry for pets.

He enjoys cycling and scuba diving and has spent many years developing his interest in sculpture. Dr. Van Geem’s wife, Erin, is the co-owner and practice manager of Mother Lode Veterinary Hospital.  They have three sons: Josh, is currently a veterinary student at UC Davis; his twin brother Brody just completed a degree in economics at Oregon State University; and the youngest son, Cavan, is an anthropology major at the University of Nevada, Reno.


IMG_3195 - Version 2Mario Dinucci, DVM/Partner

Dr. Mario Dinucci studied biology at Cal Poly San Luis Obispo and graduated from UC Davis School of Medicine in 2007. After graduation, he spent four years practicing equine medicine in Nevada County, and made a career change to small animal medicine and surgery in the spring of 2011.  His professional interests include dentistry, soft tissue and orthopedic surgery, ophthalmology, and ultrasonography.
Dr. Mario enjoys fly fishing, photography, camping, backpacking the Sierras, and spending time with his family.

Molly Dinucci, DVM/Partner

Dr. Molly Dinucci completed her undergraduate degree in Animal Science at Cal Poly, San Luis Obispo in 2002 and went on to receive her doctorate degree from the University of California, Davis in 2007.  After graduating from veterinary school, she completed a year-long internship in equine medicine at Loomis Basin Equine Medical Center in Loomis, CA.  She stayed on at Loomis Basin as an associate veterinarian in equine ambulatory practice for two and a half years.  Although she enjoyed equine practice, she decided to make a career change to small animal practice in the fall of 2010, after the birth of her son, Zachary.  Dr. Molly practiced small animal medicine and surgery in Auburn for two years before joining Mother Lode Veterinary Hospital.

Dr. Molly is a lover of the outdoors and enjoys running, hiking, skiing/snowboarding, camping, and backpacking.  She and her husband, Mario, have four children; Zachary, Greyson, Harper, and Hudson.

Dr. Molly’s professional interests include preventative and internal medicine, geriatric medicine, ultrasound, and soft tissue surgery.

IMG_3195 - Version 2Cameron Thompson, DVM/Associate

Dr. Cameron Thompson studied Microbiology at Cal Poly San Luis Obispo, earning his Bachelor’s degree in 2008. He then pursued his veterinary degree at UC Davis, graduating in 2012. During the next three years, he practiced mixed large animal veterinary medicine in the north bay area. With the arrival of his newborn daughter in late 2014, he decided to travel closer to family in the foothills, and joined the team at Mother Lode Veterinary Hospital in April 2015. His professional interests include orthopedic and soft tissue surgery, dentistry, ophthalamology, and advanced imaging.

In is free time, Dr. Cameron enjoys horse training, scuba diving and flying small engine airplanes, along with spending time with his wife Gina and daughter Aubrey.


Andrea Bledsoe, DVM/Associate

Dr. Andrea Bledsoe (aka Dr. Dre) grew up in Nevada City, went on to get her Bachelor of Science degree in Biology from Sonoma State University, and then graduated from UC Davis School of Veterinary Medicine in 2017. She completed a year-long internship at Steinbeck County Equine Clinic, and then after moving to Auburn, joined the wonderful team at Mother Lode Veterinary Hospital. Her professional interests include wellness, surgery, ophthalmology, and internal medicine.
Outside of veterinary medicine, she enjoys spending time in the outdoors, baking, and painting. She also enjoys time spent with her partner, Chris, her three-legged dog, Hobbes, and her very long kitty, Nova.