About Us

Mountain Lakes Dental strives to serve its community with the latest in dental techniques and technologies for optimal treatment results, less invasive procedures, and more patient comfort.  We operate with integrity, honesty and care for our patients and amongst our staff.  We adhere to infection control best practices and office policies to ensure the safety of our patients and staff are our top priorities. 

Your smiles are our rewards!

Meet the Doctors

Dr. Peter Eng

Dr. Peter Eng received his degree in Doctor of Dental Medicine (DMD) in 1988 from the Boston University School of Dental Medicine. He finished in the top 5% of his class and went on to complete a residency in Advanced Education in General Dentistry (AEGD) in 1989 and earned his Certificate of Advanced Graduate Studies (CAGS).

Dr. Eng was a clinical instructor in Oral Diagnosis and Oral Radiology in Boston University before relocating to New Jersey where he established his practice shortly. Dr. Eng is a long-standing member of the American Dental Association, New Jersey Dental Association, Tri-County Dental Society and the National Society of Dental Practitioners.

Dr. Eng has been honored to be the recipient of multiple awards:

Morris/Sussex County Top Dentists – 2018, 2019

America’s Best Dentists – 2004 – 2020

Meet our Team

Pilar A. Celis, R.D.H.

I’m proud to work in an office that provides high quality dentistry. My favorite part of my job is to make patients comfortable during treatment and make sure they leave with a smile. I earned my degree from NYU in May 2012. I have prepared myself to become a RDH because I want to educate patients about the importance of proper oral hygiene and prevention of oral diseases. I have been a dental hygienist at MLDA since July 2012. I am fluent in English and Spanish. I enjoy quality time with my husband and two children. I enjoy the beach and walking my four dogs. I look forward to taking care of all your oral needs and providing my services to you and yours.

Erik Celis

Behind every telephone call is a patient or family member with a different need, and behind every need, there is an opportunity to bring on a smile...this is the motto that I stand by. Since graduating from Montclair State University, I have over 7 years of experience in healthcare customer service, and I have been a team member of this practice since 2018, greeting our patients as they come through our front door. I am bilingual speaking Spanish-English. I have an amazing pre-teen niece who plays softball and I enjoy attending her games regularly. On my free time, I enjoy movies, traveling, fitness and the Jersey Shore during the summer time. I look forward to your calls to our practice.

Elizabeth Feliz

I have been a dental assistant since 2007, and my job is to prepare and explain the procedures to our patients and facilitate the doctor’s work to make each visit comfortable and enjoyable for our patients. One of the things that fills me with satisfaction is when a patient comes to us discouraged by a dental situation, or pain and discomfort with their dental appearance, and we are able to find a solution and transform their smile. There is no word to describe the feeling when our patients leave our office with a big smile on their face. In my spare time, I love cooking, watch shows, enjoy the outdoor scenery, and I love dogs.

Luz Mosquera (Office Coordinator)

I been working in the dental field since 2012, and I am currently the Office Coordinator at MLDA. I love using my vast knowledge of dentistry and dental insurance to help our patients navigate through the process. I am always ready and willing to help and proud to be considered an invaluable asset to our office. Don’t be surprised if I greet you by name when you’re in the office. In my spare time I enjoy traveling, shopping and spending time with my son on the soccer fields.

Hours of Operation

Our Regular Schedule

Primary Location


10:00 am-5:00 pm


10:00 am-8:00 pm


10:00 am-8:00 pm


10:00 am-4:00 pm







Our Location

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