Office Hours


9:00 am-5:00 pm


9:00 am-5:00 pm




9:00 am-5:00 pm


9:00 am-5:00 pm


8:00 am-12:00 pm



Welcome to Hamilton Veterinary Hospital

Hamilton Veterinary Hospital
18 East Park Ave Trenton, NJ 08610


609-888-1878 FAX


Dr. Mary E Moon VMD, Owner, Educated in Canine and Feline Medicine.

Dr. MEGAN EMMA DVM, Educated in Canine and Feline Medicine.

Dr. JUDY PASSMORE DVM, Educated in Canine and Feline Medicine.

Dr. NANCY SUNG VMD, Educated in Canine and Feline Medicine.

Dr. Mindy Feldmen DVM, Educated in Canine and Feline Medicine.

Dr. Brian Ashmoore DVM, Educated in Canine and Feline Medicine.

Hamilton Veterinary Hospital

Since opening in 1970 the doctors and staff of the Hamilton Veterinary Hospital have been providing the pets of central and south central New Jersey with premiere veterinary care.
Our team of professionals provides personalized, individualized care and service to our all patients within a compassionate and respectful environment. Responsive, hands-on care allows our doctors to tailor treatment specifically to individual patient needs. Medical, dental and wellness care is available to your pet during our regular hours, as well as a full range of surgical options, if necessary. After hours care also is available but provided by local emergency hospitals. We prefer that you have an appointment to see us, but walk-ins are welcome. 
Our website is a valuable tool containing a wealth of basic information that will help you care for your pet. The site also can be used as a portal for round-the -clock access to your pet's medical history and records. Online shopping is available through our website too. Here you may order your pet's prescription drugs, flea and tick preventatives and heartworm medications. Other products also are available. 
Feel free to schedule an appointment or email any questions to our friendly and knowledgeable staff at [email protected] For those preferring more traditional methods, please phone us at 609-888-3400. Remember, your pet's well-being is our primary concern.

Visit our Facebook page.

Posted Oct 05, 2020  

Our hospital is looking for a qualified person to fill the position of receptionist. Please click on Position Available tab above for more information.

Posted July 7, 2020: 

J. M. Smucker Company has announced a voluntary recall of one lot of Natural Balance® Ultra Premium Chicken & Liver Paté Formula canned cat food due to health concerns likely associated with elevated levels of choline chloride.  Click on Alert and Recalls tab form ore information.

June 2, 2020 

We are coming into hurricane season and we have a link for preparedness guidelines in case of a storm. Click here for more information.

June 1, 2020, Covid-19 UP-Date:

To the clients who have appointments, please follow the instructions of our staff when arriving at the hospital. EVERYONE is required to wear facial coverage, please stay in your car when you arrive, call the office at 609-888-3400 to announce our arrival. Please have a written note on the reason for visit and any concerns you may have for your pet. One of our staff will come out to take care of you or your pet. Please be safe to protect yourselves and our staff.

COVID-19 OUTBREAK PRECAUTIONS:  We have posted new guide lines for the hospital while we have this outbreak. Please read and follow the recommendations made in the Blog page. You can also find it on our Facebook page by click on the icon above. 

Hospital hours have been up dated during this crisis. These may change as required by guide lines set by state or local government. Please check back often or on our Facebook page.

News Flash:

Labor Day Schedule is posted on Hospital Schedule Tab.

Check our Hospital Schedule tab for the latest closing due to severe weather! Closing updates will also be available on our Facebook page. Click on the facebook logo at top of page to be redirected to our facebook website.

Your Dog Day Summer Contest has started. It runs from July 4, 2019 to Aug 30, 2019. Go to our Current Contest tab for instructions on how to enter your pet in our photo contest. To review the photos or have your friends and family like your photo click on our Facebook link above.

New Up to Date info on the Top Pet Insurance Companies. More information is available on our Library Page. 


Blog Posting on Leptospirosis by Dr. Emma.  Please click here to read blog.  Spanish version on same page.

Warning:  Leptospirosis outbreak has increase in New Jersey. We have had several suspected cases in the last few months and two deaths.  Please click here  to read more about the disease and how to prevent it from affecting you pets. If you have any question please contact us so we may help you prevent this disease. 609-888-3400.

We have a new Blog on this years Tick Season. Just click on Blog to read.

Bravecto Promo, now until April 30, 2019. To see details click here.


We have a product called Bravecto that will protect your pets for up to 12 weeks by giving just 1 chew tablet. That's THREE months of protection. For more information click on Bravecto. We carry Bravecto in our hospital or on our on line pharmacy's.

Along with the Ticks and Fleas comes summer injuries or illnesses. Are you able to cover the cost of an illness or injury? There are many insurance companies out there but, we have made it a little easier for you to decide what is right for you and your pet. Click here to learn more!

Our Four Legged Friends

Meet Our Doctors

  • Mary E. Moon

    Dr. Mary Moon graduated from The University of Pennsylvania School of Veterinary Medicine in 1983. Dr. Moon is a member of the New Jersey Veterinary Medical Association. She has also been a past member on the executive board for American Veterinary Medical Association. Dr. Moon has also been a member of American Animal Hospital Association for the past 20 years. With the retirement of her father, Dr. Calvin Moon, Mary has been the owner since 1995. She loves to paint landscape scenes in oils and is now working with pastels. Some of her paintings and sketches are hanging in our office.

  • Judy Passmore

    Dr. Judy Passmore graduated from Michigan State University College of Veterinary Medicine in 1982. Judy initially worked in equine practice. In 1994, Judy started working with small animals and joined our hospital in 1997. Judy enjoys seeing both cats and dogs, with a special interest in feline medicine. Dr. Passmore is a member of the AVMA, and the AAFP. She enjoys her cats, reading and traveling.

  • Nancy Sung

    Dr. Nancy Sung has graduated from University of Pennsylvania, School of Veterinary Medicine in 2009. Nancy has done an externship at our hospital to gain experience in small animal practice between her sophomore and junior year at U of P. She enjoyed her experience so much she returned to us in August 2009. She and her husband have expanded their family in the last year. She is enjoying motherhood, and still has time to practice veterinary medicine.

  • Dr.
    Megan Emma

    Dr. Megan Emma is a lifelong resident of Mercer County. She is a graduate of Tufts Cummings School of Veterinary Medicine with a degree in Doctor of Veterinary Medicine. Megan’s interests are in medicine and behavioral issues in small animals. Dr. Emma joined our staff in May 2012 as a new graduate. She also became a newlywed this October. She loves to read in her spare time and travel when she gets a chance.

Locate Us

Find us on a map


Hear From Happy Pet Owners

  • "" Hi everyone...We just wanted to thank everyone at HVH for helping us get thru such a difficult time letting Rok go to the Rainbow Bridge. We will never forget you guys as you made the journey of these 15 years smooth and easy not only for us but for our good old boy.... To Dr. Moon, your professionalism and caring manner in helping us get ROK thru this is to be commended. We couldn't have done it without you. Thanks and God Bless. The Gliem family and of course Rok!!! On 7/21/12 I unfortunately had to let my best friend, Niki, go. This was the 1st time I ever had to make such a hard decision but the staff at HamiltonVet were so compassionate and caring & they made what was a horrible day more comforting to me and my family. The staff was very friendly and sincere in their condolences. I thank you all from the bottom of my heart. XOXO""
    Stephanie W. / Trenton, NJ

Featured Articles

Read about helpful topics

Newsletter Signup

Sign up to receive updates