Our Doctors

The brief descriptions below are designed to familiarize you with our doctor's training, professional credentials and work experience.

General Dentist

Michael A. Bonomo D.M.D.
Red Hill Dental Office and Quakertown Dental Office

Dr. Michael Bonomo completed his undergraduate studies at the University of Scranton with a Bachelor of Science Degree in Biology, then continued on to receive his Doctor of Dental Medicine (DMD) degree from the Temple University School of Dentistry in 1992. After dental school, Dr. Bonomo completed his residency at the University of Medicine and Dentistry of New Jersey.

Dr. Bonomo has received several awards including; ADA National Board Exam 1992, American Association of Community Dentistry Excellence and the AEGD Certificate. His specialty in practice is restoration of dental implants and he is passionate about keeping up with the latest advances in dentistry. Dr. Bonomo is also trained in treating sleep disorders with oral appliances.

Dr. Bonomo is a member of the following organizations:

  • American Dental Association
  • Pennsylvania Dental Association
  • Montgomery/Bucks Dental Society
  • Lehigh Valley Dental Association Continuing Education since 1995
  • Seattle Continuing Education Implant Study Club of Quakertown since 1999

Dr. Bonomo is a father of three adult children, treasures family time, is passionate about fishing, and enjoys most sports.

Steven A. Bonomo, D.D.S. - Red Hill Dental Office

Dr. Steven Bonomo joined the Red Hill Dental Office in 2013, formerly practicing in Wilkes-Barre, PA for 16 years. He obtained a Bachelor's Degree in Business Administration and Pre-Dental from Kings College and a Doctor of Dental Surgery (DDS) degree from the University of Maryland, Baltimore College of Dental Surgery in 1996. An interest in forensics pushed him to pursue a Forensics Certificate in Dentistry from the Armed Forces Institute of Pathology (AFIP) in 2009. He has had the opportunity to assist several families of crime victims find justice and a peace of mind.

Dr. Bonomo maintains professional memberships with the following organizations:

  • American Dental Association
  • Pennsylvania Dental Association
  • Montgomery/Bucks County Dental Society
  • Pennsylvania Association Dental Identification Team (PADIT)

Outside of work, you will likely find Dr. Steve and his wife Lisa spending family time with their three grown children and two "fur-babies". He enjoys reading, fishing, hiking and cooking on the Green Egg. Dr. Steve's happiest place on earth...Disney World!

Eamon Roark Fricker, DMD - Red Hill Dental Office

Dr. Fricker was born in Philadelphia and raised in Lansdale, Pennsylvania. After graduating from North Penn High School, he attended Muhlenberg College in Allentown where he found his love of learning. His love of learning was then carried onto Temple University's School of Dentistry, which Dr. Fricker graduated from in 2009. Dr. Fricker earned his General Practice Residency certificate from Muhlenberg Hospital. Before coming to the Red Hill Dental Office, Dr. Fricker had practiced in both Skippack and Allentown.

Dr. Fricker is a member of the following organizations:

  • The Academy of General Dentistry
  • Pennsylvania Dental Association
  • American Dental Association

In his free time Dr. Fricker enjoys hockey, collecting vinyl records and cooking challenging meals.

Abhishek Patel, D.M.D. , F.A.G.D, AFAAID
Quakertown Dental Office and Red Hill Dental Office

Dr. Patel

Dr. Patel received his Bachelor of Dental Surgery (B.D.S.) at Bharati Vidyapeeth University at Pune, India in 2009 and his Doctor of Dental Medicine (D.M.D.) from Boston University, Henry M Goldman School of Dental Medicine in 2014. He completed the Advanced Standing Program which is a specialized 2 year program for international dentists. 

Dr. Patel is a Fellow of the American Academy General Dentistry, (FAGD) one of the highest awards that a dentist can receive. The fellowship was created by the Academy of General Dentistry (AGD) to honor those who recognize and embrace the professional obligation to remain current in the knowledge and skills necessary to ensure delivery of the highest quality oral healthcare to better serve patients. 

Dr. Patel is an Associate Fellow of the American Academy of Implant Dentistry, (AFAAID). Dr. Patel completed more then 500 CE hours in Implant Dentistry, in addition to a special hands on training in the Dominican Republic. AAID credentialed dentists invest significant time and energy into dental implant-focused training, above and beyond their basic education. They have a holistic approach to dental implants, taking into consideration how your whole body health affects your oral health and vice versa. https://www.aaid-implant.org/

Dr. Patel is also trained in smoking cessation treatment from Penn Medicine to help patients quit tobacco related addiction and has had additional training to treat sleep disorders using oral appliances.

Dr. Patel is a member of the following organizations:

  • The Academy of General Dentistry
  • Pennsylvania Dental Association
  • American Academy of Implant Dentistry (AAID)

Dr. Patel is married and has two children. In his free time Dr. Patel enjoys traveling, watching and playing Cricket, hiking and photography.

Karen Guo, D.M.D. - Red Hill Dental Office

Dr. Guo completed her undergraduate degree Magna Cum Laude at The Ohio State University with a major in Biology and a double minor in English and History. Dr. Guo discovered her love for dentistry while assisting a fantastic group of dentists during a mission trip in Haiti. Dr. Guo went on to receive her Doctor of Dental Medicine (DMD) degree at Tufts University School of Dental Medicine. Dr. Guo joined the Red Hill Dental Office in 2017. In 2023, Dr. Guo received her Master's Degree in Public Health with Dartmouth College.

Dr. Guo is an active member of both the American Dental Association and the Pennsylvania Dental Association. She regularly attends continuing education courses to remain current with the latest advancements in dentistry.

Dr. Guo is also a member of the following organizations:

  • The Academy of General Dentistry
  • Montgomery/Bucks Dental Society

Outside of the office, Dr. Guo enjoys horseback riding and cooking. In addition to her busy schedule she also manages to make time to volunteer with the Philadelphia/Montgomery County Medical Reserve Corps (MRC).

Rachel Azinge, D.D.S. - Quakertown Dental Office

Dr. Azinge

Dr. Azinge received her Doctorate of Dental Surgery (DDS) degree from New York University College of Dentistry in 1997. Dr. Azinge has also completed hundreds of hours of post-graduate residency training in Advanced Education in General Dentistry (AEGD) at the Albert Einstein College of Medicine and at Bronx Lebanon Hospital.

Dr. Azinge is originally from London and is now calling the Lehigh Valley home. Prior to her move, Dr. Azinge lived and practiced in Texas where she was the "Official Team Dentist" for the Dallas Mavericks' affiliate, the Texas Legends NBA-D League.  Dr. Azinge's greatest passion is for her daughter and godson who are her pride and joy!


Coby Orthodontics - Red Hill Dental Office
Guy Coby, D.M.D., Diplomate, American Board of Orthodontics

Dr. Coby is a Diplomate of the American Board of Orthodontics and is a member of the College of Diplomates of the American Board of Orthodontists. Dr. Coby is a Clinical Associate Professor and Co-Clinical Director of Orthodontics, University of Pennsylvania School of Dental Medicine and previously a Visiting Associate Clinical Professor, Harvard School of Dental Medicine.

As a professor in the Department of Orthodontics at the University of Pennsylvania, Dr. Coby lectures on a variety of clinical orthodontic topics including the latest materials and techniques within his field. He also assists orthodontic residents in their preparation for board certification and advises his orthodontic residents in research of brackets and wires used within the field of orthodontics. He uses this information in his practice to ensure his patients have access to the latest and best technology in their treatment.

He has been elected by his peers to the following leadership positions within the field of orthodontics:

  • President, Board of Directors, Greater Philadelphia
  • Society of Orthodontists
  • Board of Directors, Pennsylvania Association of Orthodontists
  • President, University of Pennsylvania Orthodontic Alumni Association
  • President, Lehigh Valley Society of Orthodontists

Dr. Coby has lectured, conducted forums, and moderated at numerous annual sessions of the American Association of Orthodontists. He has publications in various professional journals.

Dr. Coby is very involved within the community. He is President of the Board of Directors at the Upper Bucks YMCA and chaired the Strategic Planning Committee for this organization. He supports many athletic and educational youth programs in addition to assisting charitable causes within the community.

He and his wife Catherine reside with their two daughters on a farm in Quakertown. They share a love for the care, training, riding, and driving of horses.

For more information on Coby Orthodontics please click on the image below.