Doctors and Staff

Donald W. Holmes, DVM, Owner

Dr. Holmes is the founder and owner of North Kenilworth Veterinary Care.

The Arizona native earned a Bachelor’s degree from the University of Arizona and is a graduate of the Colorado State University College of Veterinary Medicine and Biomedical Sciences.

His affiliations include the American Veterinary Medical Association and the Arizona Veterinary Medical Association.

Residents of the Willo Historic District of Phoenix, he and his wife, Nancy, share their lives with three dogs and ten cats. When they aren’t caring for this pack, they enjoy hiking, camping and fishing in Arizona’s beautiful outdoors.


Aja Manahan, Practice Manager, Certified Veterinary Technician

This North Dakota native moved south to Arizona with her family when she was six. At age 11, she got her first dog, Willow, from the Arizona Humane Society, and has never looked back to a pet-less life.

Aja earned a Bachelor of Science degree in Pre-Veterinary Science from the University of Arizona and passed the state examination to become a certified veterinary technician in 2011. She joined the staff at North Kenilworth Veterinary Care in the spring of 2012 where she cares for our patients and assists our veterinarians. In July 2017 she was promoted to the position of Practice Manager.

“I love seeing people with their beloved pets and how happy pets can make their owners feel. I’ve always worked with animals and cannot think of anything I would be better at or enjoy more than working in the veterinary field,” shares Aja, who enjoys hiking, volleyball, fishing and camping with her husband.

While she doesn’t exactly take her work home, she is still surrounded with animal companions. They share their Phoenix home with four dogs: Eldie, Pancake, Fern, and Vedder; and five frisky felines.


Amber Taylor, Veterinary Technician

California native Amber Taylor recalls growing up with lots of animals all around her, including the injured ones she brought home for care. At age five, the local veterinarian let her “assist” him during a visit and she was hooked on being a vet herself.

Amber graduated from Yuba College with an Associates degree in Science. She joined North Kenilworth Veterinary Care in the spring of 2011 as a veterinary technician, assisting the doctors in medical and surgical procedures. She loves all aspects of her job and believes that the staff at North Kenilworth has an extraordinary passion for animals which, in turn, is demonstrated by the high quality of patient care. Amber is a versatile employee who is often called upon to fix and maintain items around the office because of her power tool skills!

Off-duty, Amber enjoys hiking, camping, four-wheeling, shooting, and exploring old ghost towns and ancient mine ruins. Her pet family includes Lowrider Larry the Basset Hound, Pitbulls Koda and Macie Grey, and Jersey the lab-mix. She also has five cats and an Amazon parrot.


Christy Fincher, Veterinary Technician

Christy Bostick is a life-long resident of Phoenix and a graduate of Apollo College where she received her veterinary assistant certification.

The Maryvale High School alumnus grew up with dogs as family pets, and it was through their companionship that Christy realized her life’s vocation.

As a member of the compassionate team of veterinary professionals, she lends her caring and understanding nature to the many pet patients that are treated daily at North Kenilworth Veterinary Care. Christy is also responsible for all of the medical and pharmaceutical inventory ordering done at the clinic.

Away from the clinic, Christy enjoys travelling with her husband and going to movies and restaurants with friends. She enjoys gardening and cooking at home with her mixed breed dogs Cocoa and Argos. Christy’s specialty dish is salsa, made with plenty of her homegrown chili peppers, tomatoes, and cilantro. She also has six cats, including Stevie the one-eyed, three-legged, super-cat!


Joanna Garcia, Veterinary Technician

Los Angeles native Joanna moved to Phoenix with her family when she was 9 years old.  She got her first dog — a black cocker spaniel named Mickey — two years later when she was 11.

“I have always had a strong love for animals,” says Joanna who attended the Veterinary Assistant Program at Apollo College.  She joined the team at North Kenilworth Veterinary Care in August of 2012, and was promoted to our OSHA Safety Officer shortly after starting.

Joanna finds assisting in the care and treatment of our animal patients very rewarding personally.  She also appreciates that the mission of the veterinarians and technicians is to provide conscientious and individualized care  for each pet and its owner.

Away from work, Joanna enjoys reading, going to the park, and spending time with her family, which includes pitbull, Negra, Chiquita the Chihuahua, and her puppies.


Diana Reyes, Certified Veterinary Technician

Diana was born and raised in Phoenix, Arizona. When she joined the North Kenilworth team in 2014 we were all blown away by her kind and compassionate soul. Diana’s passion for animal care started at a young age, and after graduating high school she attended Kaplan College where she earned an associates degree in animal technology. Diana treats each patient as if he were her own pet and offers overnight pet sitting stays at client homes.

Diana lives in west Phoenix with her sisters, their four dogs and four cats. She enjoys vacationing with her family in Central Mexico where her parents reside.


Jessica Venancio, Certified VeterinaryTechnician

A passionate proponent of animal welfare Jessica has devoted her working life, and much of her home life, to those animals most in need. Jessica feels that every animal is deserving of quality medical care and is first to jump at helping a pet in need. Jessica began her veterinary medical career in 2001 and has become proficient in animal nursing and surgical care over the years. In 2006 Jessica passed the Veterinary Technician National Exam earning her Certified Veterinary credentials in the state of Arizona. She is a trusted member of our team and always willing to share her extensive knowledge with others.

Jessica resides in her central Phoenix home with her husband, Jason, and their dogs, Jolene and Levi.


Tanya Sweeley, Veterinary Technician

Tanya is a lifelong valley resident with 10 plus years of veterinary office experience. She entered the animal medical field as a second career, starting as a receptionist but working her way into the roll of veterinary technician. She has a passion for prevention and is a wealth of knowledge when it comes to properly caring for your furry friends to prevent disease. Tanya enjoys learning about the many diets offered by Royal Canin and Hills Prescription Diets and will gladly help you select the most suitable diet for your pet.

Tanya shares her Central Phoenix home with her husband, Jim, their Cane Corso, Angus, and their Boston terrier, Hiccup. In her free time, she enjoys reading fantasy novels and keeping up with popular television shows.


Sandra Swan, Veterinary Technician

Sandra started her career in veterinary medicine in 2007. She joined our team as a veterinary technician in September of 2017 and now works part time at our office in conjunction with operating her own pet sitting business. Although Sandra’s daughters and grandchildren live in the Phoenix area, she hails from Chicago where her Mother and siblings still reside. According to Sandra, she loves the heat and will never move back to the cold!

Sandra shares her South Phoenix home with her husband, James, and their two dogs, Dino and Doyle.


Scott Hoffman, DVM

Dr. Scott Hoffman graduated from Ohio State University in June of 2002. An Ohio native, Dr. Hoffman decided it was time to move west shortly after graduation. He obtained his first DVM position in Flagstaff, Arizona. Dr. Hoffman worked in a variety of shelter and private practice settings in Flagstaff, Phoenix, and the Denver area until joining North Kenilworth in June of 2017. His favorite aspect of veterinary medicine is surgery and he continues to pursue continuing education in advanced surgical methodology. Dr. Hoffman’s good sense of humor and contagious laughter have made him a uplifting spirit at North Kenilworth Veterinary Care.

Dr. Hoffman shares his Gilbert home with his wife, Frances- also a longtime member of the Arizona veterinary community- their two sons, Cameron and Everitt, one dog, two cats, two tortoises, and Budgie the Bird.