Your Pet’s

Emergency Veterinarians


Diane Johnson, DVM

Hospital Owner/Medical Director

Hospital Owner/
Medical Director

Dr. Johnson received her veterinary education at Ross University in 1994 and has practiced emergency medicine since that time. She has extensive training in all types of surgery, especially orthopedic, along with a special interest in cardiology and ultrasound.

Always looking to provide the most progressive care, Dr. Johnson is a life-long learner, constantly striving to add progressive technologies and acquire new techniques that will benefit her patients, from sophisticated diagnostic equipment to the latest in anesthesia, pain management, and pharmaceuticals. Dr. Johnson particularly enjoys training and mentoring veterinarians and technicians and witnessing their excitement as they master new skills that directly impact pets and their families.

In her free time, she enjoys spending time with family, her menagerie of pets including dogs, cats, horses, and birds, doing Bikram Yoga, and all kinds of water sports. Dr. Johnson’s latest hobby is exploring the country in her RV.


Luiz Bolfer, MV(Hons), DVM, PhD

Clinical Director, Residency Trained in Cardiology and Emergency & Critical Care

Dr. Bolfer received his DVM from the Universidade Tuiuti do Paraná, Brazil where he was valedictorian as well as a clinical studies assistant professor. Upon graduation, he traveled to the US where he completed his first internship at the Animal Medical Center in New York and a second internship at the University of Illinois Urbana-Champaign where he discovered his passion for cardiology and critical care. 

In 2014 he completed his first residency in Emergency and Critical Care at the University of Florida in Gainesville wherein he decided to stay and pursue a Ph.D. in Gene Therapy and Stem Cell Research in Cardiology. His thesis titled “The Role of the Pyruvate Dehydrogenase Kinase 4 (PDK4) Gene Mutation in the Development of Dilated Cardiomyopathy in Doberman Pinschers and Potential Application of Cardiac Gene Therapy” was published in Nature, a highly regarded journal, and made substantial contributions to the effort of improving the lifespan of animals with DCM through gene therapy. Dr. Bolfer then completed his second residency in Veterinary Cardiology at BluePearl Pet Hospitals in Sarasota, Florida where upon completion he began practicing at AEHD. Dr. Bolfer also completed a fellowship in hemodialysis at the University of California-Davis in order to provide exceptional care to patients suffering from acute kidney injury.

In addition to working in Cardiology and Critical Care here at AEHD, he is also our Clinical Director, ensuring our staff operates at the highest level and receives continuing education in the newest techniques and equipment.

In his free time, he enjoys spending time with his wife and two young children, who like to explore Florida attractions such as the beach and theme parks as well as frequent the movie theater. He is also a volunteer pilot with the charity organization Pilots and Paws, which links volunteers who rescue, shelter, and adopt out animals with pilots and plane owners willing to assist with their transportation.

Kari Lemanski, DVM

Emergency Veterinarian

Dr. Lemanski was born and raised in western Pennsylvania and has always loved animals. To gain experience during her studies, she worked as a small animal veterinary assistant from 2013 throughout veterinary school, during summer and winter breaks.

She earned a Bachelor of Science degree in animal science at the University of Findlay in Ohio. After receiving her DVM from St. George’s University Veterinary School, she completed her clinical year at Ohio State University in 2020.

When not caring for animals at the hospital, she enjoys swimming, traveling, spending time with family, friends, and three dogs, Bella, Cooper, and Winston.


Kelly Schwanebeck, DVM

Emergency Veterinarian

A Florida native, Dr. Schwanebeck was raised in DeLand. She is a double Gator, obtaining her bachelor’s degree and subsequently her Doctor of Veterinary Medicine from the University of Florida.

Suffice it to say she is thrilled to be back in her hometown to serve the pets and their families in her community.

An outdoor enthusiast, she enjoys spending time with her family, friends, and fur babies. She also enjoys hiking, boating, exercising, and crafting.

Dr. Kuzimski

Lauren Kuzimski, DVM, MS

Emergency Veterinarian

Dr. Kuzimski received her MS in veterinary biomedical sciences and her DVM at Oklahoma State University. Following graduation in 2018, she spent the last few years working with a large percentage of exotics and in urgent care with dogs and cats.

She is excited to transition more into an emergency setting to help provide 24/7 care for all animals – from scales to furry friends. 

Outside of work, she spends time with her family, her own critters (her husband would call it a small zoo), and friends. She takes time to write, read, and find new adventures within her own nerdy hobbies (she’s excited to be within driving distance of Universal Islands of Adventure).

Veterinary Technicians & Assistants

Client Services


Valerie Blake, CVPM

Hospital Manager

Valerie began her veterinary career over 25 years ago as a veterinary technician at a small mixed-animal practice in her hometown in West Virginia. She moved to Florida in 2010 and continued her career as a veterinary technician before moving to practice management over five years ago. She is now a Certified Veterinary Practice Manager (CVPM).

Valerie enjoys spending time with her wife and their many fur babies, including dogs, cats, and chickens. When not at work, Valerie enjoys home improvement projects, kayaking, and cycling.

Sunni Willis, CVT

Human Resources Manager

Sunni took the plunge and relocated to Florida from Massachusetts a few years ago. She is a certified veterinary technician (CVT) and has over 25 years of experience in veterinary medicine and hospital management.

Sunni has two grown children. Her daughter has followed in her footsteps and is a veterinary technician, and her son is a history teacher. She shares her home with her husband and two Chihuahuas named John Gotti and Violet. Now that she’s settled into life in the Sunshine State, Sunni can be found restaurant hopping via boat, or volunteering for animal rescue groups. She is passionate about finding every dog a forever home. She is also an avid football fan, always rooting for her hometown New England Patriots.


Administrative Coordinator and Executive Assistant


Maintenance Supervisor

Frank’s to-do lists are long, but he always comes through. He is so happy to be able to provide support to our team so that we can keep the hospital operational (even through hurricanes). A lifelong animal lover, he lives on a farm with cats, chickens, goats, and to protect them all, Apollo the Maremma Abruzzo Sheepdog.