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Dr. Bob Cohn D.V.M., President and Head Veterinarian

I grew up in Long Island, NY and attended Franklin Pierce College in Rindge, NH where I graduated in 1975 with a Bachelor of Science in Biology. I then studied veterinary medicine at Araneta University in Manilla, Phillipines. I graduated in May of 1979 and then began working at a surgical referral practice in New York, Flushing Animal hospital. I relocated to Maryland in 1981 when I met my wife Robin. Shortly after, we opened the North Laurel Animal Hospital.

I feel it is important to meet the highest standards of performance and practice of the industry. Accordingly, I am a member of the American Veterinary Medical Association (AVMA), the American Animal Hospital Association (AAHA), the Eastern Veterinary Orthopedic Society (EVOS), the Veterinary Orthopedic Society (VOS) and the Maryland Veterinary Medical Association (MVMA). I have also been a managing Board Member of the Emergency Veterinary Clinic in Catonsville, Maryland since 1990.  I was in the first group of 50 veterinarians trained in the world for Penn H.I.P Certification.  This diagnostic tool will indicate your dog's susceptibility to hip dysplasia.  

My family has many animals at our home I care for our dogs (Sullivan and Stella) while my wife looks after the birds, turtles, lizards and many other animals we live with.

In my spare time I enjoy exercising, golfing, ice hockey and spending time with my wife Robin and my son Andrew. I previously coached my son’s hockey teams, however, he is no longer playing so we both keep active in hockey by volunteering with Special Hockey Washington, a group dedicated to helping physically and mentally challenged people to play hockey.

Darlene Silver, Receptionist

My name is Darlene and I have been a Receptionist at the North Laurel Animal Hospital since October 2009. After three decades of managing a top rated veterinary hospital in Howard County, I retired in 2008 only to find a year later I missed the daily interaction with clients and their pets. Having known Dr. Bob for 25 years and respected his high quality AAHA facility, I returned to the workforce and am enjoying the new bonds developing with North Laurel Animal Hospital clients and their pets. It is good to be back in veterinary medicine with such a compassionate staff and great clientele.

At home, I enjoy sharing precious time with six year old Duncan, my smooth-coated Collie and two year old Abby, a Bernese Mountain Dog.

April Jackson, Receptionist

My name is April and I have been with North Laurel since November 2013.  I began working in the animal industry in August 2008 after a brief stint on the Pride of Aloha serving the beautiful state of Hawaii! My love for animals drew me to the veterinary field five years ago.   Client service is my strength and I love interacting with our clients and their pets!  

In my spare time, I try to keep up with my daughter, Melaina, who is a toddler and very quick on her feet!  We enjoy going to the park, watching movies, drawing and playing with our cats.


Katie Gage, Receptionist

My name is Katie and I am one of the receptionists here at North Laurel. I love having a job that allows me to interact with animals. After coming to work here I can't imagine working anywhere else. Working here has turned me into a " bring your work home with you" kind of person. We have added quite a few four legged family members to our house , currently we have 5 dogs and 2 cats.

When I'm not at work I enjoy spending time with family, friends and of course my pets!

Joseph Hightower, Veterinary Technician

My name is Joseph Hightower and I began working at the North Laurel Animal Hospital in October of 2010. I couldn't be happier. I attend Towson University as a biology major on the pre-veterinary track. I also volunteer with the Baltimore Humane Society. Animals are my friends. I have a boxer, a cat and some reptiles.

I enjoy working out and watching movies when I'm not doing school work. Once again, I couldn't be happier with working at the North Laurel Animal Hospital.

Sue Potenzone, Technician's Assistant

Hello. My name is Sue and I began working at the North Laurel Animal Hospital in October 2010. In 1999, I left my career in banking to stay at home and raise my daughter, who is now 17 years old. I wanted to get back into the workplace where I could share my love of animals and am thrilled to be at NLAH surrounded by them!

At home in Laurel, I enjoy working out, reading and spending time with my husband, daughter and Italian Greyhound, Mia.

Cindy Ernst, Groomer

Hi, my name is Cindy. I joined the North Laurel Animal Hospital team December 2009 as their Groomer. I have been working with animals since 1995 starting as a Veterinary Technician & Kennel Manager. I began grooming 1996 and eventually made my move to the Annapolis area, where my boyfriend & I enjoy our summers on the Chesapeake Bay with our two rescued Pit Bull Terriers & Chihuahua.

When we’re not out on the boat with the dogs, we enjoy spending our time Camping, kayaking, hiking, rafting & any extreme sport activities I can get my hands on. Life is too short not to enjoy it!

Andrew Cohn, CFO

I grew up in Burtonsville, MD and I started walking dogs here at the North Laurel Animal Hospital when I was 12 years old. I played hockey for 12 years and was recruited to play at NCAA Division III Suffolk University in Boston, MA. I graduated from Suffolk Cum Laude with a degree in Entrepreneurship in 2008. I decided to join the North Laurel Animal Hospital team in order to work alongside my father, Dr. Bob, and help him grow his business. I have taken on the role of Hospital Administrator in hopes of applying the concepts I learned in school and to make daily life at the hospital even more pleasant and smooth flowing. We have two dogs, Petie (Pitbull) and Shorty (Chow-Burnese mix) and a multitude of birds, turtles, lizards and other exotic animals cared for by my mother, Robin. We are an animal family in every sense of the word!

Outside of the office, I enjoy spending time with friends,stock trading and competitive power lifting. I am a state record holder in the Men’s Drug Tested 198 pound and 220 pound classes in Maryland.

I graduated form Hofstra University with a Masters degree in Business and Finance. I am now the Chief financial Officer at NLAH and President  of Liberty Holdings group based in New York City.

Niv Winston, Accountant/MGR.

I have been with North Laurel Animal Hospital since 2004 providing bookkeeping services. I have worked in the accounting field for fifteen years. I received my Associates degree in Business Administration from Montgomery Community College in 2002 and my Bachelor's Degree in Accounting from UMUC in 2008 . I am actively pursuing my Master's degree in Accounting at University of Maryland University College. I pride myself on my honesty and high level of work ethic.

I am married and am a full-time mother to my two daughters Taylor and Bobbi and son Popcorn (two year old, Maltese). In my free time, I enjoy working on home improvements, cooking and watching movies.