Meet the Team

Our goal here at Dr. Petfixer Veterinary Hospital is to meet your needs as it pertains to the health and well-being of your pets. Your pets are members of your family and you expect the same quality of healthcare as you would for any other member of your family. When your pet comes to Dr. Petfixer they become a part of our family too.


Dr. Juanita Monteiro</br> Veterinarian photo

Dr. Juanita Monteiro

Dr. Juanita Monteiro is a graduate of the Tuskegee University School of Veterinary Medicine and completed a one-year small animal medicine and surgery internship at the University of Tennessee.

Dr. Monteiro has gained extensive medical and surgical experience during her twenty-year tenure in private and corporate veterinary hospitals in Philadelphia and Montgomery counties. In addition to her clinical background, Dr. Monteiro is a published scientific investigator and has a PhD in Immunology from the University of Pennsylvania. She has presented her research on the immune response in vaccine models at both national and international scientific conferences. In 2009, Dr. Monteiro was appointed to the Pennsylvania State Board of Veterinary Medicine by former Gov. Edward Rendell. She enjoys spending time with her children and pets in Harleysville, PA.

Dr.  Karen Detweiler  </br> VETERINARIAN photo

Dr. Karen Detweiler

We are very excited to welcome Karen Detweiler VMD, to the Dr. Petfixer family. She has practiced veterinary medicine for 35 years, working with large and small animals. Dr. Detweiler earned her undergraduate degree in Animal Science, as well as her Masters in Veterinary Science at The Pennsylvania State University. She graduated from The University of Pennsylvania School of Veterinary Medicine in 1986. She has returned from her retirement from practice ownership and is happy to be an associate veterinarian at Dr Petfixer.

Dr. Dorothy Clair </br> VETERINARIAN photo

Dr. Dorothy Clair

After growing up in sunny Florida, Dr. Dorothy Clair moved to Mexico in order to pursue her education in the veterinary field. In 1981, she graduated from the National Autonomous University of Mexico, and moved back to Florida where she practised veterinary medicine until 1987. Later, she relocated to Harlyesville, Pennsylvania, and opened up a practise of her own: Greenlane Veterinary Hospital. She diligently ran this practise for almost 30 years. In 2019, she sold the practise, and entered a semi-retirement until Dr. Monteiro recruited her to the Dr. Petfixer family. 

Dr. Clair is excited to continue her work at Dr. Petfixer, and looks forward to meeting the rest of your furry, feathered, and scaly friends.

Dr. Petfixer Veterinary Hospital

840 Harleysville Pike

Suite 1 Harleysville, Pa 19438

Request Appointment

For general information, questions, appointment requests, call us at:

Phone: 215-256-6001
Fax: 215-256-6448


Monday 9:00am- 6:00pm

Tuesday 9:00am- 6:00pm

Wednesday 9:00am- 12:00pm

Thursday 9:00am- 3:00pm

Friday 9:00am- 6:00pm

Saturday (Tech appointments only) 9:00am- 12:00pm

Sunday Closed