Oswego Animal Hospital

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When you bring your pet to Oswego Animal Hospital your pet's health is our priority and excellent service is our goal. Our staff takes pride in consistently providing professional care and genuine personal service within a state-of-the-art medical facility. The doctors and staff of the clinics work hard to anticipate client's and pet's needs, while striving to provide superior veterinary services in a compassionate manner.
1280 Rt. 34, Oswego IL 60543
Phone 630-499-8820
Fax 630-499-8801
M-F 7am-8pm (doctors start at 8am)
Sat 7am-3pm (Doctors start at 8am)
Sun 9am-1pm (doctors start at 10am)
Emergency Services contact our hospital 24/7
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Staff at Oswego Animal Hospital

Dr. Rebecca Lundeen

Dr. Lundeen began working at Oswego Animal Hospital in 2013. She received her Bachelor's Degree in Animal Sciences and Doctorate in Veterinary Medicine from the University of Illinois at Urbana-Champaign. Her special interests include surgery and internal medicine. In her free time, Dr. Lundeen enjoys spending time with her husband and their golden retriever.

Dr. Jason Jacobsen

Dr. Jacobsen is the managing partner of the Oswego Animal Hospital. He started with Kremer Veterinary Services in 1998 working in the kennels. He received his BS in Animal Sciences from University of Illinois in 2000 and attended Ross University where he obtained his degree in Veterinarian Medicine in 2004. Dr. Jacobsen is a member of the ISVMA, CVMA AND AVMA and has taken basic and advanced courses in orthopedics. His interests include both small animal surgery and orthopedic surgery. In his off time Dr. Jacobsen enjoys flying planes, hunting, fishing and spending time with his wife, Donna and their daughter, Larkin. Included in the Jacobsen family are Jersey, a golden retriever, Libby, a lab and three cats, Taco, Lola and Katie.

Dr. Tony Kremer

Dr. Tony Kremer graduated from the University of Illinois College of Veterinary Medicine in 1990 and has founded three scholarships at that college for veterinary students that have financial need.  He has been the owner of 9 veterinary practices and is president and co-founder of Help Save Pets an animal shelter that has adopted over 1200 animals annually into loving homes.   He is also a member of the Chicago Veterinary Medical Association Public Education Committee and has routinely appeared on NBC 5 Chicago as well as FOX Chicago and ABC 7 News.  For More Information on his media and public education work, check out DrTony.com.  He has a special interest in Orthopedic Surgery and has performed advanced knee and hip procedures as well as complicated fracture repair.  In his spare time, he loves to Motorcycle, scuba dive, and play guitar.  He has run the Chicago Marathon and is currently training for the Chicago Triathalon.   His wife, Meg has a master degree in Engineering as well as becoming a certified obedience trainer and pet groomer. She is currently the executive director of Help Save Pets.  They have 2 rescued dogs named Boots and China, a cat named Spyder, and 2 horses named Tango and Dancer.

Dr. Michael Buedel

Dr. Michael Buedel has been Chief of Staff and partner at Animal Care Center of Plainfield since 2002. He is also a partner in the four other clinics of Kremer Veterinary Services. Dr. Buedel attended University of Illinois Urbana-Champaign for his undergraduate studies and majored in Biology. After graduating from the U of I in 1996, he attended Ross University School of Veterinary Medicine. Dr. Buedel graduated valedictorian of his class in 2000 and immediately began practicing at Animal Care Center. He takes pleasure in all facets of veterinary medicine, but particularly enjoys orthopedic surgery. He has learned and honed is surgical skills by attending continuing education courses in orthopedics, including an advanced masters course. He has also had opportunities to share his passion of veterinary medicine with the community by appearing on NBC 5 and going to schools to talk to children. Starting in 2008, he has sponsored a scholarship for a Ross University student with financial need who is attending the University of Illinois for their clinical year.
Dr. Buedel and his wife Jennifer, a high school teacher of 11 years, have two young daughters who keep them laughing and “on their toes”. Ten years ago they adopted a basset hound mix named Flounder from Help Save Pets and he continues to be a great joy in their lives. In his free time, Dr. Buedel loves to travel, ski, and keep up with the Chicago sports teams as much as possible.

Dr. BreAnne Feldman

Dr. Feldman has been practicing veterinary medicine since June 2008. She attended Wartburg College in Waverly Iowa for three years prior to admittance into veterinary school at Iowa State University. After graduation from veterinary school she completed a one year internship in small animal medicine and surgery at The Florida Veterinary Referral Center. She then returned to the midwest and practiced emergency medicine in the Chicago area prior to joining the Oswego Animal Hospital in 2012. Her interests in veterinary medicine include emergency medicine and soft tissue and orthopedic surgery. She owes her interest in veterinary medicine to her father and grandfather who are also veterinarians.

Dr. Jennifer Sinese

Dr. Sinese received her Bachelor’s degree in Animal Science and Doctorate of Veterinary Medicine from North Carolina State University. While completing her veterinary degree, she was awarded the Merck-Merial NIH training grant to pursue research interests. She enjoys working with all species of animals and participated as a member of the Louisiana Animal Response Team in efforts to rehabilitate wildlife affected by the Deepwater Horizon oil spill. Her interests include internal medicine and ophthalmology. In her time off she enjoys spending time with her family which includes two mixed breed dogs named Zoe and Conner, and a cat named Ella.

Kristen Gough

Kristen Gough received her grooming certification through PetSmart and has been grooming pets since 2004. She has been with Oswego Animal Hospital since 2011. She has one dog, a shitzu named Mr. Bubbles.

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Services at Oswego Animal Hospital


We take great pride in our state of the art surgical facilities. Routine surgeries are performed on a daily basis at all three clinics, however you may also see our doctors removing stones from Felix the cat's bladder, pulling out a sewing needle from Poochie's stomach, or even removing an infected ear canal from a Cocker Spaniel. In addition, many of our doctors have taken post-graduate courses on advanced orthopedic procedures such as total hip replacements, fracture repairs, knee surgeries, and more.


Our doctors are very knowledgeable and current on all aspects of veterinary medicine. Due to the many hours and large number of cases our doctors see on any given day, they have been exposed to a tremendous amount of challenging medical cases such as renal failure, unregulated diabetes, cardiac and respiratory disease, cancer, and more. Consequently they are all very experienced and kept current on any new treatments or medicine that would offer the best care for your pet.


We are proud of our boarding facilities at all three clinics and welcome visitors. At Oswego Animal Hospital dogs reside in indoor climate-controlled runs with an outside exercise facility.


Happiness is a professionally groomed pet. Our grooming staff will keep your pet looking beautiful and feeling healthy for many years to come. The groomers work with all breeds of dogs and cats, providing clipping, dipping, bathing, nail trims and comb-outs.

Nutritional Counseling

Good nutrition is just as important to pets as it is to people. Proper diet can help control some of the problems that affect our pets. Our doctors and staff are available to answer any questions you may have and guide you on a proper nutrition path for your pet. Ask about our computerized weight management program for those overweight pets.

Behavior Counseling

Behavior problems can be frustrating to correct. Whether it is a new puppy or kitten, older dog or cat, it is important to get the right answers. Our staff can consult with you in areas of concern and if necessary, we can also recommend programs and specialists in those areas.

Obedience Classes

To help get you and your new puppy off to a good start, we offer puppy classes at no charge, held at Animal Care Center. Have fun learning about health, obedience and behavioral topics while your pup has fun learning to socialize with others. We also offer advanced puppy and obedience at a competitive fee.

House Calls

There are times you may not be able to make it to our facility and on those occasions we are happy to come to you. House call service is available on an appointment system.

After-hours emergency care

Please contact our hospital 24hrs a day for instructions.

Payment for services

One of our staff or management will be happy to discuss the basis for fees and explain what is necessary to provide quality care for your pet. We urge our clients to ask questions about our fees prior to beginning treatment. An itemized approximation of the expected charges will be provided prior to surgery or major hospitalization. To keep our fees as low as possible, it is the hospital policy that all accounts are settled before you pet is taken home. For you convenience, payments can be made by cash, check, or most major credit cards, or ask about our no-interest payment program (subject to approval prior to services being rendered.)

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General Health For Your Pet

General Health When bringing your pet in for a visit, we encourage you to ask questions. The key to a healthy pet is an educated owner. Most people think that vaccinations are the most important preventative measure they can provide for their pet. Although we strongly believe in vaccinations, a through physical examination is the cornerstone of any preventative health care program. Your pet cannot be vaccinated against ailments such as cancer, heart disease, kidney disease and obesity. Early detection and prevention can help your pet live a long and happy life. Let us show you how to keep your pet healthy.


Distemper/ Parvo-also includes Hepatitis, Leptospirosis, Parainfluenza and Corona Virus
Rabies vaccine
Lyme vaccine
Influenza vaccine
Fecal exam
Heartworm test and prevention
Dental checkup


Distemper/ Respiratory virus combo
Rabies vaccine
Feline Leukemia vaccine
FIP vaccine
FIV vaccine
Fecal exam
Heartworm prevention
Dental checkup

Exotic Pets

Reptiles, birds and rodents are just a few of the pets that have become popular today. Ask our veterinarians for current information on proper health care.

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