Dog and cat logo representing in home veterinary care, acupuncture, hospice, and pet euthanasia in Portland, Lake Oswego and surrounding areas.



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Our Veterinary Caregivers

From your first contact with us, our entire team is dedicated in assisting you and your pet(s).  Each one of our doctors, technicians and support staff are dedicated to our mission of improving the comfort and quality of life for pets and their people!


Louise Mesher, DVM

Dr. Mesher is the owner of At Home Veterinary Services.  Louise grew up in eastern Canada and has been a practicing veterinarian since 1999.  Before earning her Doctor of Veterinary Medicine, she graduated from law school at the University of Victoria in British Columbia.

She worked in the Seattle area for two years before moving to Portland to become a staff veterinarian with Dove Lewis Emergency Animal Hospital.

In 2004, Dr. Mesher began working as a house call veterinarian with House Calls for Pets in the Portland area. She loved the fact that she could give her clients personal attention and take the time to listen to their concerns in a comfortable, unhurried environment.

Dr. Mesher took a little time off from practice to have a baby in 2007.  In 2008, she created At Home Veterinary Services. She thoroughly enjoys performing house calls and treating both cats and dogs in the comfort of their own home. She is devoted to providing caring, compassionate and thorough care to her patients and to helping their guardians achieve the best quality of life possible for their pets.


Heather B. Dillon, DVM

After graduating from Texas A&M University in 1996, Dr Dillon spent a year completing an internship on Prince Edward Island at Atlantic Veterinary College. (It was here that Drs. Mesher and Dillon met and became friends.)

Dr Dillon moved to Portland in 1997 and practiced medicine primarily at two Clinics: Wilsonville Veterinary Clinic and, most recently, North Portland Veterinary Hospital. She also spent a couple of years doing relief work at numerous clinics around the metro area.

Dr Dillon loves the relationships that can develop between the veterinarian and her clients and patients. “In a house call it is even more profound”, she says. “Clients have my undivided attention and I can get a much deeper understanding of what is happening for the pet.” Assuring that animals have the most comfortable medical experience possible is a goal to which Dr. Dillon is ardently devoted. Her Portland home is shared with her husband, young son and a very large Manx cat


Tisha Posey, DVM

Tisha Posey grew up in Oklahoma and earned her Doctorate of Veterinary Medicine in 2008 from Oklahoma State College of Veterinary Medicine.

Although she is a born and raised “Okie” she has always felt drawn to the pacific northwest.  After working in Tulsa, Oklahoma in a traditional practice 5 years she and her husband decided it was time to fulfill their dreams so started planning a move to Portland.  As fate would have it, At Home Veterinary Services was looking for a new hire at that time.

Dr. Posey finds fulfillment from building genuine and meaningful long-term relationships with clients and patients and home visits seems like the most natural way to achieve this. “To be able to build this relationship in a comfortable home environment just feels right to me.” Tisha says,  "My pets are my best friends, and I think our pets should be treated as such," she says. “Being in the home allows me to treat other animals like I would my own pets, providing them with care in an unhurried and minimally stressful manner.”

At home, Dr. Posey cares for her cat Seniõr Chavez, and her dogs, Perrin, and Apollo. She is married to her high school sweetheart, Chris.  In her free time, she enjoys all that the pacific northwest has to offer but most of all being out in nature with Chris and the dogs while enjoying an Oregon Pinot Noir.


Jennifer Leddy, DVM

Originally from South Florida, Dr. Leddy attended Tulane University in New Orleans for her undergraduate degree before attending the University of Florida where she received her DVM. After graduation, Dr. Leddy moved directly to Oregon and has been a resident ever since.  Her veterinary interests include the human animal bond, geriatric medicine, pain control, hospice care, and supporting the quality of life for pets and their people.  Dr. Leddy has served on various local medical boards including the PVMA and PCC Veterinary Technician Advisory Board.

Veterinary Technicians

Jennifer Jensen, CVT

Jenn has over 10 years experience as a Certified Veterinary Technician at a busy, multi-doctor practice in North Portland.  Although born in Canada, she has called the Portland area home most of her life.  After completing her Bachelors Degree in Zoology at Washington State University in 1998, she pursued and obtained a degree in Veterinary Technology from Portland Community College.  She has been a Certified Vet Tech since 2001.  She shares her home with her husband, daughter and 3 furry felines.  Jenn enjoys crafting and spending time with her family when she is not helping pets and their people.

“What I love most about house calls is being able to see our patients in their everyday environment.  They are more relaxed and trusting than they would be in a traditional veterinary clinic.  You get a much better sense and understanding of their true personalities and overall health.”


Rachel Long, CVT

Rachel is an Oregon native. She graduated from OSU in 2008 with a Bachelors degree in Zoology and in Animal Science. That same year she also obtained her Veterinary Technician License. She has been working in the veterinary field since High School and has over 10 years of experience.

Her special interests include animal behavior, nursing, and client education. Her home is shared with her son, a boxer, and 2 cats. Away from work she enjoys spending time with her busy 4 year old. She also enjoys gardening, cooking, hiking, and spending time with family and friends.




Client Services

Angie Leonberger

Believe it or not, Angie lives in Texas!  After working as a veterinary assistant for At Home Veterinary Services for two years and visiting our clients with our doctors, Angie got married and moved to New York to be with her husband and were later transferred to Texas.  Angie didn't want to work for anyone else and wanted to support the in home veterinary care she believes in so much.  So, she now answers our phone, schedules appointments and calls our clients to check in on their pets, all from Texas.  Angie connects to our records system remotely and communicates with staff via Skype, telephone, e-mail and text!

Practice Support

Ryan DesJardins

Ryan is Dr. Mesher's husband and provides part-time technical and support services for the practice.  You may also occasionally hear him answer our phones.  He works full-time for the City of Portland Bureau of Emergency Communications.

He’s an avid animal lover (it’s sort of a requirement when you are married to a vet), who grew up on a farm in southeastern Washington.  After serving in the Marine Corps, attending college and working in southeastern Washington, he moved to Portland in 2001 and met Dr. Mesher while she was an emergency vet at Dove Lewis.  They were married in 2005 and have a daughter, two dogs and three cats.

Ryan is a proud alumni of Washington State University (#GoCougs) - sorry UO/OSU fans!

Ryan is also an accomplished photographer.  His website is


5775 Jean Rd. Ste. 105
Lake Oswego
United States