Stream Valley Veterinary Hospital

42902 Waxpool Road
Ashburn, VA 20148-4525


Mary Corey, D.V.M. and Owner of Stream Valley Veterinary Hospital

 Broadlands / Ashburn, VA - Stream Valley Veterinary Hospital - Dr. Mary Corey                                                                                                                                                     ...and Petey the Cockatiel

Dr. Mary Corey is native to Northern Virginia and grew up inside the Beltway. She schooled at Whittier Junior High, then attended Falls Church High School, graduating in 1977. Her childhood buddies always included dogs, cats, horses, and a variety of other four-legged critters, large and small, yet some had more legs, and others no legs at all.  She was naturally curious and driven to help and heal her critter companions!

Our aspiring doctor went on to Blacksburg where she attended Virginia Polytechnic Institute and studied Biochemistry. Upon graduating Cum Laude, she moved next door to attend the Virginia-Maryland Regional College of Veterinary Medicine, completing her training in 1988, Doctor of Veterinary Medicine.

She practiced veterinary medicine on the staff of noteworthy New Jersey veterinary hospitals through mid-1998. When she returned to Northern Virginia, Doctor Mary spent the following two and a half years as a clinician in emergency medicine at the Regional Veterinary Referral Center in Springfield, where she fostered her aspiration to open a unique practice. During the end of her tenure as an ER clinician and with the encouragement of the referral center, she constructed her dream. With the close of the millennium year 2000, she opened Stream Valley Veterinary Hospital, her new--and we hope your new--veterinary hospital.


Ashley Signorino, D.V.M. 

Associate Veterinarian at Stream Valley


Dr. Ashley Signorino was born and raised in Virginia Beach, Virginia.  She earned a B.S. in Biology from James Madison University in Harrisonburg, Virginia, and worked as a veterinary assistant throughout her undergraduate career.  Dr. Signorino attended the Virginia-Maryland Regional College of Veterinary Medicine, and has come to the Northern Virginia area with her husband Joe, a physical therapist.

Dr. Signorino joins the Stream Valley team with professional interests in neurology, physical therapy, and internal medicine.  In her free time, she enjoys going to the beach, hiking, and cooking.  She has a cat named Philly, who easily trains all of the people around her.

Nandita Fernandes, D.V.M.

Associate Veterinarian at Stream Valley


Dr. Fernandes was born and raised in India but has called Northern Virginia her home for the past 13 years. She graduated from Bridgewater College with a B.S in pre-vet biology and graduated from St. George University with a master's in public health and doctor of veterinary medicine. She is currently working towards her acupuncture certification. Dr. Fernandes joins the Stream Valley Team with interests in acupuncture, nutrition, the human-animal bond, wound management, internal & preventative medicine and geriatric care. In her free time she enjoys spending time with her 3 dogs and diabetic cat, watching movies, baking, and outdoor activities in the sun.

Leanne Kalinksy, DVM

Associate Veterinarian at Stream Valley

 Leanne Pic 1 with dog

Dr. Leanne Kalinsky just joined our Stream Valley team and we are very excited to have her! Recently named one of Northern Virginia's Top Veterinarians by NOVA Magazine in 2017, Dr. Kalinksy comes to us with 15+ years of experience in both small animal medicine and practice management. We believe that Dr. Kalinsky’s interest in preventive medicine and internal medicine will be a nice compliment to our practice. She also has a passion for rehabilitative medicine and we look forward to the opportunities this will provide our clients and patients. Dr. K shares our belief in a fear free veterinary practice and wants to do what she can to help strengthen the all-important human-animal bond.Though she is now one of the newest members of the Stream Valley family, Dr. Kalinsky has her own family at home that she shares with her fiancé David and their two pets, Monty and Mr. Rub Dee. Monty is an adorable toy poodle, full of personality and Mr. Rub Dee is their orange tabby cat. In her spare time, Dr. Kalinsky loves to exercise and is an avid runner. She also enjoys biking with her family, Monty included!