Meet Our Staff


Dr. James M. Wiener, DMD

Dr. Wiener is a 1984 graduate of the University of Medicine and Dentistry of New Jersey. He enjoys all facets of dentistry, with an emphasis on crowns, bridges, dentures, and cosmetic dentistry. He has taken numerous continuing education courses, mostly on crowns, bridges, implants, and cosmetic procedures. Dr. Wiener is constantly striving to stay abreast of all of the newest dental developments and technologies to stay on the cutting edge.


Dr. Rudy Chao, DDS

Dr. Rudy Chao is a 1979 graduate of the Tufts Dental School. Dr. Chao has been practicing for 30 years, and enjoys all facets of general dentistry. His emphasis is on crown and bridge, dentures, and implant restorations. Dr. Chao enjoys a loyal following with all his patients. He is constantly involved with continuing education to keep current with all the latest developments. Dr. Chao currently practices at the Marlton offices.


Dr. George Buongiovanni, DDS

Dr. George Bunogiovanni brings over 20 years experience as a dentist to our practice. He enjoys all aspects of dentistry, with a strong emphasis on root canals, crown bridge and dentures. His pleasant demeanor coupled with his clinical skills make him a great asset to Marlton Dental Center. Dr. Buongiovanni practices at the Marlton location.


Dr. Harold Mertz, DMD

Dr. Harold Mertz is a 1985 graduate from the University of Medicine and Dentistry of New Jersey, where he ranked second in his class. Dr. Mertz enjoys all phases of dentistry, with a strong emphasis on root canals, crown and bridge, and implant restorations. His fun loving personality makes all his patients very comfortable and at ease. He has taken advanced training in endodontics, implant dentistry, and oral surgery. Dr. Mertz interests include all sports, especially football and baseball. Dr. Mertz currently practices at the Haddonfield location.


Dr. Samuel Selzer, DMD

Dr. Samuel Selzer is a 1967 graduate from the University of PA School of Dental Medicine. Dr. Selzers distinguished honors include serving as a Captain in the US Air Force from 1967-1969. He has also been recognized for his work with the handicapped by Colgate/Palmolive Co. Dr. Selzer performs all facets of general dentistry, and has a loyal following of patients. Dr. Samuel Selzer currently works at the Haddonfield office.


Dr. Ed Chermol, DMD

Dr. Ed Chermol graduated from Temple University in 1990. “Family Dentistry” has been Dr. Ed’s focus over the past 19 years. His concern and empathy for patients has built him a loyal following, as Dr. Chermol practices in our Audubon location. Dr. Chermol is always on the cutting edge with his technology and materials, as he is always taking  continuing education courses.  Ed’s hobbies include fishing, golf and spending quality time with his family.


Thomas Breithaupt, DMD

Dr. Thomas Breithaupt is currently a full time dentist in our Audubon office. Dr. Tom comes with over 25 years experience, with great dental skills and a wonderful demeanor with his patients. He has taken numerous CD courses on advanced restorative cases, and does crown and bridge and implant restoration on a regular basis. Tom lives in Princeton with his fiancée, Anna, and he has 2 children. Hobbies are art, swimming, and time with his family.


Dr. John Leonard, DMD
Dr. John Leonard is currently a full time dentist in our Voorhees location. John graduated from UMDNJ with honors and has over 20 years experience. In the dental field. Dr. John does all general dentistry, and is great with the kids. He brings a lifetime of experience,, along with a great smile and caring personality. Dr. John lives in Toms River, NJ.

Dr. Dara Nikoonezhad, DMD

Dr. Dara Nikoonezhad is a 2017 Graduate of Rutgers Dental School with honors. He enjoys all phases of dentistry, with an emphasis on crown and bridge and dentures and Invisalign Orthodontic cases. Dr Dara’s clinical skills coupled with a great personality make him a wonderful addition to our team.

Dr. Dara lives in Marlton, NJ. He enjoys movies, TV, eating different cuisines, and outdoor sports.



James M. Wiener, DMD
CEO/Primadent Inc.

Dr. James M. Wiener is the CEO and founder of Primadent Inc. He brings over 20 years of entrepreneurial, clinical and business acumen to the company. His visionary leadership and ability continue to grow the company through business development and acquisitions ensuring that Primadent will always be an integral force in the dental marketplace. Dr. Wiener currently performs all business/administrative functions for the company as well as clinical dentistry in the Audubon office.


Jo-Ann Waschko
Controller / Primadent Inc.

 Jo-Ann Waschko is responsible for all the aspects of the financial and accounting operations of the company. She ensures budgeting, compliance and revenue cycle management are in place at all times. Mrs. Waschko also is directly involved with the design and implementation of our employee benefit plans, such as medical, 401K , etc. She also is responsible for accounts payable and payroll. Jo-Ann’s experience and dedication to the job make her a great asset to Primadent.


Ann Marie Russell
Single Site Manager – Audubon Family Dentistry

Ann Marie Russell comes to Audubon with over 25 years experience in senior management roles of dental companies. Ann’s duties and responsibilities include all front desk duties, insurance processing, and management of all staff of this location. Ann’s pleasing personality and wonderful demeanor make her a great choice for this position, and we are proud to have Ann Marie on our team. Ann lives in Clementon with her husband, Tom and 2 sons.


Wendy DiPietro
Single Site Manager/Marlton Dental Center

Wendy DiPietro brings 14 years experience in the dental industry, including 8 years in senior management roles.She provides oversight for all day to day operations, including scheduling, insurances, as well as targeted financial goals for the practice. Wendy is also instrumental in the design and implementation of updated policies and procedures. Her keen business acumen coupled with her wonderful personality make her a wonderful asset to Marlton Dental Center.

Gary Ward
Single Site Manager / Haddonfield Family Dentistry

Gary Ward brings 18 years experience in the dental field, including 10 years in senior management roles to Primadent. He is responsible for all operations and financial aspects of the practice, including all front desk and insurance duties, as well as all administrative components. Gary is also our patient coordinator, and provides comprehensive tx plans and financials for all our patients, and is an expert in customer care.

Gary resides in Pennsauken, NJ. His hobbies include movies and theatre, baking and gardening.

Connie Clayton
Single Site Manager/Voorhees

Connie Clayton is the Single Site Manager for the Voorhees office. Connie brings over 8 years of dental management experience to Primadent. She is responsible for managing all staff, all front desk duties and human resources. Connie is married and lives in Sickerville, and has 1 daughter. Her hobbies include spending time with her family, the Jersey shore and traveling.