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11 Years
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Emergency
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Compassionate Veterinary Care in Carol Stream & Glen Ellyn
At Knoll Animal Hospital, we believe every pet deserves individualized care rooted in compassion and expertise. Established in 2015, our Carol Stream-based practice combines decades of veterinary experience with Fear Free certification to minimize stress for pets and owners alike. Our team prioritizes preventive care, advanced diagnostics, and personalized treatment plans while fostering a home-like environment where pets feel safe.

With extended hours and emergency services, we serve Carol Stream, Glen Ellyn, and surrounding communities, offering dentistry, surgery, behavioral counseling, and critical care. Our commitment to transparency, client education, and pet wellness underscores every interaction.
Services
Dentistry Diagnostics Surgery Behavioral Counseling Grooming Critical Care Vaccinations Nutrition Plans Pain Management End-of-Life Care
Details
  • Year established: 2015
Highlights and features
  • Fear Free-certified staff for low-stress pet care
  • Experienced veterinarians with specialized interests in dentistry and internal medicine
  • 24/7 emergency services available
  • Home-like clinic environment with outdoor visitation space
  • Customized wellness plans for lifelong pet health
Associations and certifications
  • Fear Free Certified
What people say
Grace and genuine compassion Fear Free certified staff Knowledgeable and kind doctors Clean facilities Empathetic emergency care
Services
Dentistry
Our veterinary dentistry services prevent and treat oral diseases that impact pets' overall health. From routine cleanings to complex extractions, we use advanced imaging and pain management to ensure comfort. Regular dental care extends pets' lifespans by preventing systemic infections.
Behavioral Counseling
We address behavioral issues through personalized counseling that considers pets' physical and emotional needs. Fear Free techniques reduce stress during visits while helping owners manage anxiety at home through environmental enrichment and training strategies.
Critical Care
24/7 emergency services handle urgent medical conditions requiring immediate intervention. Our team stabilizes trauma cases, administers intravenous therapies, and monitors critical patients using advanced diagnostic tools and pain management protocols.
Surgery
We perform soft tissue and orthopedic surgeries in a sterile environment with continuous anesthetic monitoring. Preoperative bloodwork and postoperative care plans ensure safe outcomes for routine spays/neuters and complex abdominal procedures.
Diagnostics
In-house lab capabilities and digital imaging equipment enable rapid diagnosis of infections, organ dysfunction, and internal injuries. Ultrasound, radiography, and microscopic analysis help create targeted treatment plans for acute and chronic conditions.
People
Dr. Annjolyn Knoll
Owner, Veterinarian
Dr. Knoll founded Knoll Animal Hospital in 2015 after 15 years of veterinary experience. She earned her DVM from St. George's University and specializes in dentistry and exotic pet care. A Lombard native, she lives with five rescue pets.
Dr. Kate Maas
Associate Veterinarian
Dr. Maas joined Knoll Animal Hospital after graduating from the University of Illinois. Her expertise includes anesthesia and dermatology. She practices Fear Free techniques and resides with her Chihuahua mix, Nanna.
Dr. Bethany Sakowski
Associate Veterinarian
Dr. Sakowski specializes in internal medicine and diagnostic imaging. She joined the team in 2024 after completing Fear Free certification. She owns two dogs and enjoys wildlife conservation travel.
Questions
What makes Knoll Animal Hospital Fear Free certified?
Our staff completes specialized training to reduce pet stress through gentle handling and calming environments, including separate waiting areas for anxious animals.
How do I schedule an emergency visit?
Call us directly at 630-668-1748 for immediate assistance. Our emergency team provides urgent care during all open hours.
What wellness plans are available?
We offer preventive care packages covering annual exams, vaccines, dental cleanings, and priority appointment access at discounted rates.
Do you accept pet insurance?
Yes, we work with major pet insurance providers and offer financing through Scratchpay and Pawlicy for treatment plans.
Can I tour the facility before my appointment?
Virtual tours available online. Contact us to arrange a brief in-person orientation with our staff during business hours.