Internal Medicine

Internal Medicine, or IMED, provides a range of services for your pet when you and your primary vet decide to pursue more aggressive treatment options. IMED’s board-certified internal medicine specialists utilize ultrasonography, endoscopy, precise nutritional plans, advanced pathology and constant monitoring to provide a level of personal care with your pet that is unsurpassed.

Department Contact Information

Phone: 703-281-4540
Fax: 703-281-0149

Internal Medicine provides care for your pet when you and your primary care veterinarian decide to pursue more aggressive diagnostic testing, therapeutic treatments, or a second opinion. Specialists in internal medicine complete post-doctoral residency training which gives them the extensive experience and knowledge with which to diagnose and treat patients with in-depth, difficult, or multiple problems of the nervous system, immune system, gastrointestinal tract, endocrine system, pancreas or spleen. The internists at The Hope Center provide consultation on complex medical conditions as well as offer advanced diagnostics and treatment options including ultrasonography and endoscopy. The internal medicine practice at The Hope Center is committed to providing the best quality care for our patients and clients. To contact the Internal Medicine Department directly at The Hope Center, call (703)281-4540.


  • Ultrasonography
  • Endoscopy
  • Ultrasound-guided biopsies
  • Bone marrow biopsy
  • Endotracheal/Trans-tracheal wash
  • Rhinoscopy
  • Naso-esophageal tube placement
  • Gastric feeding tube placement
  • Thoracocentesis
  • Abdominocentesis
  • Diabetic Management
  • Total parenteral nutrition
  • Transfusion medicine

Internal Medicine Veterinarians

  • Kelly Gisselman, DVM, Dipl. ACVIM

    Dr. Gisselman graduated in 2005 from The Ohio State University College of Veterinary Medicine. She went on to complete a rotating Small Animal Medicine and Surgery internship and Internal Medicine residency at the Animal Medicine Center in New York City. Dr. Gisselman became a diplomate of the American College of Veterinary Internal Medicine in 2010. She is originally from Baltimore, Maryland and was excited to move back a little closer to home when she started at the Hope Center in 2008. She enjoys all aspects of internal medicine and has multiple publications evaluating infectious, urinary, endocrine and gastrointestinal disease. When she isn’t working she enjoys swimming, biking, running, yoga and traveling as well as spending time with her husband, two kids, dog and cat.

  • Sharon Clare, PhD, DVM, DACVIM

    Dr. Clare received a PhD in biochemistry at the University of South Carolina and then graduated with a Doctorate in Veterinary Medicine in 2005 from North Carolina State University. She completed a rotating Small Animal Medicine and Surgery internship at The Ohio State University prior to working for the Small Animal Emergency Service at the Veterinary Teaching Hospital at NCSU. After three years as an emergency clinician, she moved to Madison, WI where she completed a three-year residency in Small Animal Internal Medicine at the University of Wisconsin. After her residency, she worked at UW as a clinical Internal Medicine faculty member prior to moving to Virginia in 2013. Dr. Clare has a special interest in the emergency aspects of internal medicine diseases, and she enjoys the challenge of diagnosis and management of chronic gastrointestinal disease. When she is not at the hospital, Dr. Clare is an avid reader of fiction for pleasure, and she enjoys spending time outside with her Labrador retrievers, Molly, Olive, and Maybe. Her 15 year old cat, Bogey, keeps everyone else in line.

  • Scott Wood, DVM

Technical Staff

  • Mary-Ann Sterling, LVT, Lead Technician

    Mary Ann has worked in the veterinary field since 1995 and obtained her veterinary technician license in 2000. She has worked in small animal medicine and spent 2 years working with exotic animals. In 2003 she joined The Hope Center’s Internal Medicine department as their Lead Technician. Mary Ann has designed and headed the Internship Program for veterinary technicians here at The Hope Center. She shares a farm with her dogs (Greyson and Whinny), cats (Tuggie, Mac, Clair, and Godric), horses (Sonny and Miss Piggy), goats (Mable and Pearl), cow (Tank) and a bearded dragon (Todd). In her free time she enjoys reading and camping with her dogs.

  • Helen Hamilton, LVT

    Helen has been working in the animal field since 1991. She went to Harcum College where she received her veterinary technician license in 1998. She moved to Virginia in 1999 and worked in small animal medicine until 2006, when she became a member of the Internal Medicine department here at The Hope Center. Helen enjoys spending time with her family and five cats. (Congnac, Margarita, Martini, Sambuca, and Sake)

  • Angela Nazionale, LVT

    Angela attended Northern Virginia Community College from 2000-2003 and graduated with an AAS in veterinary science before becoming a Licensed Veterinary Technician in 2003. As an LVT, Angela worked at Friendship Hospital for Animals in Washington, DC for 4 years before coming to Vienna, VA to The Hope Center in June 2007. She has 2 dogs, Harlem and Hilton, and a cat, Tiffany. When not working Angela enjoys traveling and riding motorcycles.

  • Alecia Freeman, LVT
  • Tina Winder, LVT
  • Ashley Gilstrap

Internal Medicine Front Desk Staff

  • Stephanie Richards
  • Megan Baldwin
Hospital Location: 140 Park Street SE
Vienna, VA 22180
Contact Numbers: Tel (703) 281-5121
Fax (703) 281-0149

For non-medical questions or comments: Email Us