Specialists

Dr. Jan Brennan
Dr. Jan Brennan

Animal Behavior Specialist

Dr. Jan Brennan is driven to strengthen the human-animal bond by providing or correcting the communications between people and their pets. To her, there is nothing more satisfying. At Harden Ranch Veterinary Hospital, Dr. Brennan spends her time training and conditioning animals.

Before becoming an animal behavior specialist, Dr. Brennan trained service dogs for law enforcement. A graduate of University of California, Davis, School of Veterinary Medicine, Dr. Brennan received the Outstanding Women Vet of the Year in the 1970’s.


Dr. James Roush
Dr. James Roush

Specialist Veterinary Surgeon

Specializing in orthopedic and general surgery, Dr. James Roush has been practicing at Harden Ranch Veterinary Hospital since it opened. If Dr. Roush is able to successfully restore sick or injured pets to a good quality of life, while working with a good-hearted and committed team of people, he has all he needs to be happy. Dr. Roush is happy working at Harden Ranch Veterinary Hospital.

When Dr. Roush was a child, his dogs were his best friends and wild animals fascinated him. His science teachers were a source of inspiration and they helped him to love the life sciences.

Dr. Roush is a graduate from Iowa State University College of Veterinary Medicine.


Dr. Richard Kienle
Dr. Richard Kienle

DVM, DACVIM/Cardiology, Veterinary Specialist

Dr. Richard Kienle, in addition to routine cardiology services like electrocardiography and echocardiography, offers pacemaker implantation, Holter monitoring and other interventional procedures. Dr. Kienle enjoys playing bass and riding horses in his spare time.


Dr. Greg Marsolais
Dr. Greg Marsolais

DVM, DACVS, Veterinary Surgeon 

Dr. Marsolais completed his undergraduate degree at California Polytechnic State University in San Luis Obispo, California in 1998. He completed a Master of Science in Veterinary Clinical Sciences and a Doctor of Veterinary Medicine degree at Iowa State University, graduating in May 2002. The following year, he completed a small animal medicine and surgery internship at Affiliated Veterinary Specialists in Maitland, Florida. In July 2003, Dr. Marsolais began his surgical residency at the University of Illinois. In July 2006, Dr. Marsolais concluded his residency and relocated to northern California where he helped found Veterinary Surgical Centers of the Delta. Dr. Marsolais became a Diplomate of the American College of Veterinary Surgeons (DACVS) upon successfully passing the ACVS examination in February 2007. In 2008, he moved to Monterey, California and founded Pet Surgeons, Inc., a small animal mobile surgical practice. In 2010, Dr. Marsolais formed Pet Specialists, Inc. Pet Specialists of Monterey opened its doors in 2011.