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Katherine Ni, DMD, MS, PC
Periodontics and Dental Implants

Meet The Team

Our exceptional, friendly staff is our greatest asset. Our dental assistants and licensed hygienists are professionals who pride themselves on staying on the cutting edge of periodontics! Our clinical team is excited and passionate about what they do, have high standards of quality and integrity, and are motivated to achieve the best results for our family of patients.

Our dedicated and motivated staff has one primary goal - your utmost comfort! We feel it’s important that you understand the treatment so you will be able to make informed decisions regarding your treatment.  Having a better understanding about your treatment and answering your questions will allow you to relax during the procedure. Our staff is eager to address any of your questions.  Please feel free to share with us your needs and concerns.


Hi, my name is Angie and I was born and raised in Ephrata, PA. I started my career in the medical field 20 years ago as a Certified Nurses Aid and I also worked in medical records. I had the opportunity to switch to the dental field 16 years ago and I absolutely love it. I enjoy getting to know all the patients. Education, compassion and quality of care are just some of the reasons why I am excited to be a part of Dr. Ni's team. I look forward to helping you any way I can.

In my spare time I enjoy spending time with my husband, Ed, and my daughter, Rachel.  I enjoy reading, spending time with family and friends. I also love spending time near any body of water, whether it is a pool, lake or by the beach.


Hello! My name is Danielle.

I grew up just over the Lancaster County line in Honey Brook, Chester County.  I moved to Lancaster County almost 4 years ago and really enjoy being in the country yet close to such an exciting city. I currently live in East Lampeter Township with my boyfriend, Randy, and 3 cats. In my spare time I enjoy learning photography, visiting Antique shops, crafting and all things outdoors.

I have worked in various customer service roles in healthcare since I was 15. My passion for helping others and making people smile is what lead me to Dr Ni's office.  The transition from Healthcare to Dental has been an exciting opportunity to learn a new skill set to serve others.  I truly do look at the glass half full and approach every day with a smile on my face. I look forward to making you feel like a part of our family and helping you any way that I can, even if it’s just by putting a smile on your face.


Hi, I'm Trisha!  I grew up in Lancaster County and graduated from Warwick High School in 2005.  I worked in my parent's restaurant throughout high school, learning the art and skill of multi-tasking while offering great customer service. My love for helping people led me to the dental assisting program at Lancaster County Career and Technology Center where I graduated in 2008.  I now live in Honey Brook with my boyfriend, Andrew, and our dog, Cerberus. When I'm not working I enjoy spending time playing frisbee with Cerberus, reading and hiking. I also love learning new skills while helping Andrew work on cars and building things around the house.

Making you feel calm and comfortable are my specialty!


Hi, I’m Claudia Smith!

I was born in York, PA and I later moved to Dover, Delaware. My family moved back to Lancaster County when I was 10 years old, and I have lived here ever since. I graduated from Manheim Township High School in 2021. During my senior year of high school, I attended the Lancaster County Career and Technology Center for dental assisting. During my program I did my externship in a periodontal office and found my love for periodontics. I love working with the patients. Dr. Ni is a great teacher and I have learned so much. My experience working part time in high school at Landis Homes Retirement Community taught me great customer service and how to multi-task and I am happy to bring these skills to my patients at Dr. Ni's office!

In my free time I enjoy spending time with my parents and 3 siblings. I also enjoy playing volleyball and I am coaching a travel team called PA Elite. 


Hi, my name is Deisy Montoya!

I graduated from Harcum College Dental Hygiene in 2007 and worked in General Dentistry for 15 years.

Passion and dedication for my career is what brings me to follow the path of Periodontics. I enjoy getting to know the patients and listening to their needs to be able to provide the best dental care possible.  I am excited to join Dr. Ni's team and enjoy learning from her.  Dr. Ni is a great educator!

I live in Ephrata with my husband and two children. We love spending time with family and friends and having movie nights! I love going to the pool and the beach. Summer is my favorite time of the year!


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