General Dentist

Stephen W. Clark DDS MBA, President, Stephen W. Clark DDS, Inc.

  • Northwestern University Dental School, DDS, 1969
  • Licensed Dentist (California), 1970
  • Pepperdine University MBA Program, Irvine, CA, MBA degree, 1980
  • Certified Webmaster, Texas Tech University, 1998
  • Real Estate Instructor (Texas), 2003
  • Real Estate Broker License (Texas), 2004
  • Commercial Real Estate Education- Financial Analysis, Market Analysis, User Decision Analysis, Investment Analysis, 2006-7
  • Lieutenant, US Navy Dental Corps, 1969-1971
  • Private Dental Practice, San Diego CA, 1971-1974
  • General Dentist, Family Health Program, Fountain Valley, CA, 1974-1975
  • Dental Consultant, National Health Care Systems, Inc., Irvine, CA, 1975-1977
  • Founder, President and CEO of Practice Builders Inc., 1976-1977
  • Lecturer in Oral Radiology, UCLA Dental School, 1975-1977
  • Owner, Spring Dental Group, Long Beach, CA, 1978 -Present
  • General Anesthesia License, State of California (1980-1989). Completed over 10,000 General Anesthesia cases.
  • Owner, ParkView Dental Group, Buena Park, CA, 1986-1991
  • Computer Programming-MS Access/Visual Basic, HTML, 1981 – Present
  • Co-Developer, Linda Clark Realtors, Lubbock, TX, 1996 – 2004
  • Co-Founder West Texas Real Estate School, Lubbock, TX, 2003- 2009
  • Co-Owner, Weichert, Realtors-Linda Clark & Associates, 2004-2007

Periodontist/ Implantologist

Brock J Lorenz DMD MS

Dr. Brock Lorenz is a highly trained and skilled Periodontist, performing all surgical aspects of implant dentistry and Periodontics.

Dr. Lorenz earned his Doctor of Dental Medicine degree and Certificate in Public Health from the Arizona School of Dentistry and Oral Health.
Dr. Lorenz grew up in Fairfax, Virginia and graduated from Tulane University in New Orleans with a Bachelor of Science in Management. Dr. Lorenz has volunteered thousands of hours at the University of California, San Diego Free Dental Clinic Project where he helped to provide dental care to the underserved members of his community.
Dr. Lorenz was the President of his class and President of the A.T. Still University Mesa Campus
Student Government Association for two years. While in Arizona, he founded outreach clinics and events to improve the oral health of the underserved members of his community. He has received various awards in recognition of his academic accomplishments and humanitarian efforts.
Dr. Lorenz completed an additional three years of Periodontology training at the Nova Southeastern University College of Dental Medicine. During his residency, he held the position of Chief Resident and clinical and academic teacher for dental students. In addition to his Certificate in Periodontology, Dr. Lorenz obtained his Master of Science in Dentistry at Nova Southeastern University. He is also certified to provide intravenous and oral sedation.

Dr. Lorenz has lectured for the Florida Academy of Periodontists and his research has been published in Compendium of Continuing Education in Dentistry. He has been active in implant-research and prospective clinical trials to examine efficacy of various grafting materials in bone augmentation procedures. Dr. Lorenz owes much of his success to those who trained him – some of the country’s leading implant and periodontal specialists. Dr. Lorenz is a member of the American Academy of Periodontology (AAP) and the Academy of Osseointegration (AO). He currently resides in Huntington Beach, California.

Dr. Lorenz is a Diplomate of the American Board of Periodontology.


Darren Smolkin DDS

Practice limited to Endodontics (root canals)
Dr. Smolkin earned a Bachelor of Science degree in Anatomy in 1990 and a Doctor of Dental Surgery in 1994 from McGill University, Montreal, Canada, and a Certificate in Endodontics from the University of Southern California in 1997.
Since graduation Dr. Smolkin has practiced Endodontics in multiple locations in the Los Angeles/Orange County area.

General Dentist

Anna Paholiouk DDS

Dr. Paholiouk earned her Bachelor of Science (Cum Laude) in Health and Nutrition Sciences from Brooklyn College, City University of New York, in 2010 and her Doctor of Dental Surgery degree from the Herman Ostrow School of Dentistry of USC in 2016.

Dr. Paholiouk has been Invisalign certified since 2016. She attended to Loma Linda University AAID – Implant Maxi Course in 2017, the California Implant Institute Live Patient Surgical Externship in 2018 and the UCLA Aesthetic Continuum Hands-on Workshop in 2019.

While attending USC she was a teaching assistant in Posterior Fixed Prosthodontics (2014), Dental Morphology, Function and Esthetics (2013-2015) and Removable Prosthodontics (2014-2016). In addition, Dr. Paholiouk was a teaching assistant in Organic Chemistry while at Pace University of New York.

An exceptional practitioner, Dr. Paholiouk has practiced in several locations in Southern California since graduation.  Spring Dental Group is pleased to welcome her to our professional staff.

Professional Membership
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