Meet the Staff

Dr. Don Hittenmiller

Dr Hittenmiller grew up in Iowa, where he developed a passion for animal welfare. He graduated from Iowa State University College of Veterinary Medicine in 1981, and was recruited to join a large veterinary practice in Nevada. He soon found that his interest was in the prevention of debilitating diseases such as hip dysplasia, which led him to pursue advanced surgical training. In addition, he later received advanced training in veterinary cardiac and abdominal ultrasound and endoscopy. Soon many trauma and critically ill patients began being referred to Dr Hittenmiller. The advanced care that these patients required put Dr. Hittenmiller on the path of residence training through the American College of Veterinary Emergency and Critical Care (ACVECC). Dr. Hittenmiller developed techniques in veterinary epidural catheter pain management, the placement of cranial tibial artery catheters, and the use of hyperbaric oxygen in the septic patient. In the mid 1990s, as the hospital was attracting specialists in a variety of disciplines, including cardiology, radiology, oncology, internal medicine, surgery, ophthalmology, emergency medicine, and critical care. This led to the formation in 1998 of a teaching institution, Western Nevada Veterinary Specialists. As a teaching institution, the hospital each year welcomed a class of residents and interns, to be taught and certified in various veterinary specialties through the ACVECC and the American College of Veterinary Surgeons (ACVS).

Dr Hittenmiller's areas of professional interest include sepsis and Systemic Inflammatory Response Syndrome, thrombosis and pulmonology, and the furthering of advances in techniques of pain management.

When not in the hospital, Dr Hittenmiller is involved in the environmental enhancement of the Sierra Nevada mountains. He may also be found enjoying the outdoors on the many white water rivers of the West, with his fiancee Annie and his Golden Retrievers Bentley and Norbell.

Dr Lisa Lewis

Dr Lisa Lewis was born and raised in southwest Minnesota. She has always been an avid lover of animals and had a "zoo" growing up. She graduated from Iowa State University with a bachelor of science degree in 2003 and from Ross University School of Veterinary Medicine in 2009. For her clinicals, Lisa attended University of Minnesota. She moved to Carson City to pursue her dream in veterinary medicine. She enjoys emergency, internal, and surgical medicine.

Dr Lewis lives with her daughter Georgia, her Chihuahuas Rico and Khloe, and her one eyed staffordshire terrier Maggie. All of her pets are rescues. They all suffered substantial injuries and were patients here at Carson Tahoe Veterinary Hospital. She also enjoys watching movies and exploring the surrounding area in her spare time.

Dr Pam Jahn

Dr Jahn is a graduate of the University of Minnesota School of Veterinary Medicine, she moved to Nevada in 1986 and she loves the area. Her spare time goes to volunteering with the Storey County Fire Protection District. The companions in her life include 3 cats - Rowdy, Mittens, and Pooter, as well as, a Pembroke Welsh Corgi named Diana.

Dr. Robert Rishwain

Dr. Robert Rishwain was born and raised in Stockton, California.  He was always interested in animals, and loved going to the zoo as a child.  He graduated from University of California, San Diego with a bachelor of science degree in 2008 and from Ross University School of Veterinary Medicine in 2015.  Robert spent a year at Iowa State University for clinical training as part of his veterinary education.  He moved to Reno, Nevada to pursue a career in veterinary medicine.  He enjoys dermatology, clinical pathology, and emergency medicine.
 When not in the hospital, Dr. Rishwain spends his time exploring Reno and spending time with his family.  He has 2 Cavalier King Charles Spaniels, Addison and Sophie.  He also enjoys video games and exercise.


Deborah has been an employee of Carson Tahoe Veterinary Hospital since 2009. Deborah relocated to Gardnerville from Southern California in 2009. She has over 25 years of experience working in the veterinary field. She started out volunteering in a local animal shelter, it is there that she gained experience and appreciation for the dynamics of surgery. For many years she gained exposure to both emergency and orthopedic services and eventually, after relocating to Northern Nevada, joined our team at Carson Tahoe Veterinary Hospital. 

She is happily married and has two daughters and a 3 year old grandson named Jackson who is the apple of her eye. Members of Deb's family also maintain a level of passion for animals. Her husband Joseph works on a local ranch, while her daughter Aurora participates in agricultural studies. Her grandson Jackson has also showed an interest in animal studies. 


Naomi is the hospital manager at Carson Tahoe Veterinary Hospital. She has been working in the veterinary field for over 10 years. She joined the Carson Tahoe Veterinary Hospital team in order to gain the experience of emergency medicine. Naomi relocated to the Reno area from Douglas, Alaska. There she worked with sled dogs and trained with several teams to prepare them for competitive racing. Although being a musher is Naomi's dream job, she aspires to be a DVM and enjoys working in a hospital setting. When not at work, she is spending time with her daughter, hiking, biking, running, mushing, and hanging out with her dogs Sitka, and Nigel.


Susan has worked in the veterinary field and lived in the Carson Valley area for over 25 years. Owner awareness of their pet's health has always been a concern for her. When she is not working, Susan enjoys trail riding, swimming, reading, and walking her dogs. She also enjoys spending time with her husband, three grown children, and five grandchildren. Her pet family includes three horses and three dogs.


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Office Hours

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Emergencies Only *

24 HRS


Emergencies Only *

24 HRS


Read What Our Clients Say

  • "Dr Lewis and Dominique have been so wonderful since we've going there. My cat went to heaven last night and they were so helpful, caring and took wonderful care of my Tiki, I cant thank them enough"
    Stephanie C.
  • "Dr. Jahn has been our family vet forever! Friendly and helpful staff! This place isn’t just for emergencies only!
    Dr. Lewis is also a wonderful vet!"
    Jocelyn R.