For Appointments Call: 978-927-3622

Meet the Staff of BANHC

Meet the Staff of BANHC2022-11-07T14:11:29-05:00

Dr. Nancy Crowley

Dr. Nancy Crowley is a native of Boston and graduated from Tufts University School of Veterinary Medicine in 1992. After completing an Internship at Angell Memorial in Boston, she worked on the South Shore then in Salem at Hawthorne Animal Hospital. In 1998, she started the Beverly Animal Natural Health Center to focus on her niche of practicing holistic veterinary care for dogs and cats.

Wellness health care, client education, nutrition and dentistry are just a few of her passions. She is married to Erik Hatfield and has two daughters, Mia and Amy. They share their home with Jed and Lily, two cats from Northeast Animal Shelter. Dr Crowley is a member of the AVMA, MVMA, and a long time member of the Veterinary Association of the North Shore, a local group of our veterinary colleagues that provide camaraderie and continuing education to the veterinarians of the North Shore.

Dr. Crowley’s email address is note: Dr. Crowley does not check email every day, so do not use this email to seek medical advice for your pets. Please call the office to make an appointment at 978-927-3622.

Dr. Geoff Clark
Mobile Surgeon

Dr. Geoff Clark is our board certified mobile surgeon. He travels to BANHC with his technician Lacey for orthopedic and advanced soft tissue surgeries. He completed both his undergraduate degree and his veterinary medicine degree at University California-Davis School of Veterinary Medicine graduating in 1986. He completed his residency at Tufts University of Veterinary Medicine where he was one of my surgical residents!

Dr. Clark started VSNE, Veterinary Surgery of New England in 1999 and travels to hospitals in New Hampshire where he is based as well as Maine and Massachusetts. Being able to travel to our hospital allows us to offer board certified surgical care for our patients in the comfort and convenience of their familiar environment. He has published numerous scientific papers on a variety of surgical topics, been a contributing author to four veterinary textbooks and has been an invited speaker at more than 70 veterinary meetings. He specializes in canine knee surgery with interests in fracture repair and oncology cases.

Dr Clark resides in Durham NH with his family their home is shared with three cats, an English Setter, Willow, and Francis the wonder pug.

Michael Estrin, MPH, DVM, DACVIM
Estrin Veterinary Mobile Ultrasound, PLLC

Dr. Estrin received his Doctor of Veterinary Medicine degree from the University of Minnesota College of Veterinary Medicine in
2001. He completed an internship in small animal medicine and surgery at The Animal Medical Center in New York and then returned
to the University of Minnesota for residency training in small animal internal medicine. He has practiced internal medicine at referral hospitals in Minnesota, Missouri, and Massachusetts, and has worked as a consultant for IDEXX Laboratories. While consulting with IDEXX, Dr. Estrin earned his Master’s degree in Public Health with a concentration in epidemiology from Boston University. In 2014, he completed a postdoctoral fellowship at the Division of Comparative Medicine at MIT where his research involved the treatment of influenza virus infections with host-directed combinatorial RNA interference. In 2018, he started a mobile ultrasound service and
enjoys traveling to veterinary clinics in the area, helping veterinarians in the management of their more challenging patients.

Dr. Estrin uses ultrasound extensively in practice, finding it to be a valuable part of the patient database and extremely useful in guiding additional diagnostic and treatment recommendations. We are so grateful to have him be a part of the BANHC team to provide great diagnostics to our patients in house!


Carissa has been working remotely for BANHC from Alaska since January of 2022. A great addition to the staff, she helps us out remotely with so many reception tasks. Carissa is a military wife that currently calls Alaska home. She has worked alongside veterinary medicine for the better part of 10 years as a veterinary technician. She has two dogs- Ranger, a black Labrador Retriever; Scout, a Beagle, and one cat, Stormy. In her free time, she enjoys being outdoors hiking, and spending quality time with her two sweet sons and husband.


Violet began working at BANHC in the fall of 2021. A student at Beverly High School, she is a member of the National Honor Society, Marching Band, Choir, and Crochet Club, which she co-founded. In her free time, Violet loves to hike with her Tibetan Terrier Miles, play frisbee with family and friends, and work with the Food Project in Lynn. In addition to Miles, she has a rabbit named Zuko. After high school, Violet plans to pursue a degree in pre-veterinary medicine


Stuart came to BANHC in 2010 when he was around 2 years old and has been living happily at the clinic ever since. He is a bit of a troublemaker who has a love for anything plastic and never turns down food.


Karlie was adopted from Northeast Animal Shelter in the summer of 2022 to join Stuart as the hospital cat as his to do list was getting long! She has met so many dogs and cats and relishes learning everything she can from Stuart.

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