Dr. Monica Hahn


Dr. Hahn is co-founder of Stonetree Veterinary Clinic. She grew up caring for sheep, rabbits, chickens dogs and cats on a small family farm in eastern Washington. She worked her way through college, obtaining a Bachelors’s degree in Bible and Theology. Next, she embarked on a path to become a Doctor and was accepted into Washington State University’s College of Veterinary Medicine.

In 2010 she began practicing medicine in Ketchikan, then in 2013 partnered with Lorraine to open Stonetree Veterinary Clinic. In order to meet the needs of our community, Dr. Hahn performs a wide range of procedures, from basic exams to the management of complex medical conditions. She is a certified Fear Free professional and has donated time performing surgeries in both South America as well as right here in Alaska.

While Dr. Hahn enjoys the wide variety of patients and personalities that come through our doors, she has a particular interest in soft tissue surgery, feline medicine and working dogs. Dr. Hahn’s immediate family consists of her husband Tony, and stepchildren Toni, Jessica, Joshua plus two dogs: Birch a geriatric Great Pyrenees and Jaeger who is a working line Dutch Shepherd. Jaeger is training to compete in Schutzhund. Along with the dog training, Dr. Hahn and her husband enjoy traveling, hunting, and other outdoor activities, along with simply enjoying the rare opportunity to simply relax at home.

Lorraine Johnson

Practice Owner & Administrator

Lorraine is co-founder of Stonetree Veterinary Clinic. She and her husband, David, moved to Southeast Alaska in 1987. They raised their family in Southeast Alaska living in Juneau, Wrangell, and landing in Ketchikan in 2003. They have three children who all graduated from Ketchikan High School. Their oldest, Stephanie, has two children and works in Anchorage as a clinical social worker. Emilee has graduated with her doctorate of veterinary medicine and is working in Coeur D’Alene, and Matthew who served in the United States Army and now is working towards a new career.

They also have two cats Mr. Smudge and Miss Rosie. When she is not at the clinic, you can find Lorraine enjoying their boat and cruising around Southeast Alaska or cruzin’ the streets of Ketchikan in their ’65 Mustang.


Veterinary Assistant


Client Service Representatice


Kennel Attendant

Katherine Karvelas

Veterinary Assistant

Kay joined the Stonetree team February of 2020.

Sierra Roulston

Veterinary Assistant

Sierra joined the Stonetree Team in April of 2021.

Jocelyn C.

Veterinary Assistant

Jocelyn joined the Stonetree Team in August 2021


Client Services Representative


Veterinary Assistant


Pet Boutique Associate


Office Manager and Disciplinarian

Bones came to Stonetree with his brother, Runner, after their owner sadly passed away. Bones can be seen making his rounds to make sure the staff are staying on task, as well as testing out the cat toys in the boutique for quality purposes.