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


Dr. Daniel S. Greenfield DMD

Dr. Daniel Greenfield is a familiar face to many of our patients.

He started his journey in dentistry working in this practice during his junior year while in high school. He found his calling after witnessing firsthand the impact dentistry can have on the lives of our patients and the community. Dr. Greenfield earned his Bachelor of Science in Biochemistry from Grove City College, and a Doctor of Dental Medicine (DMD) degree from LECOM School of Dental Medicine.

Mountain Lakes Dental is honored to have Dr. Greenfield join our team where he shares the same philosophy in patient well-being and comfort. Dr. Greenfield has excellent interpersonal skills that are especially helpful in alleviating patients who are anxious about dental visits.

Dr. Greenfield enjoys staying active by playing some of his favorite sports including soccer, volleyball and ultimate frisbee.

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.


Patricia Fuentes

I joined Mountain Lakes Dental Associates as a temporary Assistant, and from the moment I arrived, Dr Eng made me feel like a part of the team. I highly value the honesty, dedication and care given to each patient here. I have many years of experience in the dental field and this practice fulfills all my professional expectations. I am so happy utilizing my skills to take care of our patients and make them as comfortable as possible.

During my free time I enjoy spending time with my family as well as enjoying nature with my granddaughter!

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-4:00 pm


10:00 am-8:00 pm


10:00 am-8:00 pm


10:00 am-4:00 pm







Our Location

Find us on the map