GreenTree Animal Hospital

Is this your veterinarian?

800 East Park Ave
Libertyville, IL 60048

Driving Directions

(847) 680-6543


  • Hours:
  • Mon, Tu, Th, Fri: 7:30 AM-6:00 PM
  • Wed: 7:30 AM-7:00 PM
  • Wed: Closed 2:00 PM-3:00 PM
  • Sat: 8:00 AM- Noon
  • Sun: Closed
  • (Dr.'s Hours 8am-6pm)
  • After Hrs ER: 847-548-5300

At GreenTree Animal Hospital, we understand that your pets are an important part of your life. Our highly trained staff will treat you and your pets with professionalism and courtesy while providing you with the very best veterinary care available. Our full-service practice offers a variety of services intended to promote your pet’s overall health and longevity. It is our privilege to care for you and your pets, so call today to learn about our services or schedule an appointment.

GreenTree Animal Hospital Services

  • Behavioral Medicine
  • Dental Care
  • Emergency and Critical Care
  • Fully Stocked Pharmacy
  • Hospice and Euthanasia Services
  • Internal Medicine Consults
  • Microchipping
  • Nutritional Counseling
  • Pain Management
  • Parasite Prevention and Control
  • Puppy and Kitten Care
  • Rabbits and Small Mammals
  • Radiology (X-Rays)
  • Reptiles
  • Senior Care
  • Surgery
  • Ultrasound
  • Vaccinations
  • Wellness Exams

GreenTree Animal Hospital Staff Profiles

Laura Brown, DVM

Dr. Brown graduated from the University of Illinois College of Veterinary Medicine in 1987. She also received her undergraduate degree in Biology at Illinois. Dr. Brown began her veterinary career in Southern California primarily involved in equine medicine in thoroughbred race horses. She transitioned her focus to small animal medicine in 1989 when she joined Mission Animal Hospital in Oceanside, Cailfornia. She remained at Mission until 1992 when her husband's job took the family to southeast Idaho. There Dr. Brown specialized in small animal medicine and surgery. Dr. Brown joined DuPage Animal Hospital in Villa Park, IL in 1993, (another husband transfer), and practiced small animal medicine until August of 1996 when she opened GreenTree Animal Hospital in Libertyville. Dr. Brown lives in Libertyville with husband Kris, daughters Sara and Clare, her two cats "Brownie" and "Lacey", and her allergic Golden Retriever, "Simon".

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Years in Practice: 29

U of I College of Veterinary Medicine

Sara Estrick, DVM

Dr. Sara Estrick graduated from Iowa State University College of Veterinary Medicine in May, 2000. She is an Iowa native and received her Undergraduate Degree at Cornell College in Mt. Vernon, Iowa. Dr. Estrick practiced for one year at a small animal hospital in Kenosha, WI before coming to GreenTree in 2001. General medicine, behavior, and geriatric medicine are special areas of interest for Dr. Estrick. She lives in Grayslake, IL with her husband Neil, sons Jack & Henry, as well as a crew of pets, dogs "Annie" and "Chip" and cat "Tilly".
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Years in Practice: 16

ISU College of Veterinary Medicine

Deni Ianakov, DVM

Dr. Deni Ianakov received her bachelor degrees in Animal Science and Veterinary Medicine at the University of Illinois. In May 2004, she obtained a Doctorate in Veterinary Medicine from the University of Illinois College of Veterinary Medicine. As a new graduate, Dr. Ianakov was excited to join the GreenTree Animal Hospital team in July 2004, where she is building on her strong interest in orthopedics and dentistry. Dr. Ianakov resides in Highland Park, Illinois with her husband Luis, daughter Giselle Marie, son Sebastian and rat terriers "Ziggy" and "Bijou".
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Years in Practice: 12

U of I College of Veterinary Medicine