About Us

Daniel Bowerman, DC FACO AFHI CPC

Dr. Bowerman has a unique perspective in health care. Practicing since 1978, he continues to understand the issues from the provider’s and patients’ perspective. Aside from his responsibilities in clinical practice, he has taught a variety of post-graduate programs for chiropractors and co-authored several articles that have been published in the peer reviewed literature. Beyond clinical practice, he has been involved with virtually all aspects of peer and utilization review involving, Auto, Workers Compensation, PI, BI as well as group health plans. His consulting activities extend well beyond utilization management and addresses complex medico legal issues including medical malpractice, class action, RICO, civil and criminal health care fraud. He provides expert testimony and litigation support for both the private and public sector in both state and federal proceedings.


Dr. Bowerman was one of the country’s few chiropractic medical directors and enjoyed a 13-year career at Independence Blue Cross as a Chiropractic Medical Director. Working closely with the plans SIU, he independently researched and data mined unusual practice and utilization patterns leading to investigations and recoveries. In addition, he supported investigations, law enforcement and prosecution for criminal proceedings. His role within the plan eventually led him to working in a cross functional team that was charged with evaluating drivers of health care costs, specifically looking for opportunities to improve patient outcomes and reduce risk and harm, while reducing the burden of excessive cost.


Dr. Bowerman is a Certified Professional Coder (CPC) from the AAPC and an Accredited Health Care Fraud Investigator (AFHI). He is board-certified in chiropractic orthopedics and holds Diplomate status with the American Board of Quality Assurance and Utilization Review and the American College of Chiropractic Consultants


Dr. Bowerman is a frequent lecturer on a variety of clinical topics, both including and extending beyond chiropractic practice issues. Recent topics have included Evidence-Based Medicine, Documentation, Health Care Fraud, Clinical Skills for Investigators, Medical Terminology and Coding, Pain Management, and Biopsychosocial Factors in Chronic Pain. He has performed training and educational services to both the private health care carriers both non and for profit, Property and Casualty as well as Federal Plans and Law Enforcement.


He has and continues to serve on several anti-fraud committees, and was named “Medical Director of the Year” in 2009 by the National Health Care Anti-fraud Association.  In 2019, Dr. Bowerman was honored with a Fraud Fighter Lifetime Achievement Award by the Pennsylvania Chapter of the Internal Association of Special Investigators Association.  The award was for his years of dedication to fighting fraud through his professional efforts as well as contributions as an educator to both SIU and like-minded healthcare professionals.  


Contact Information


Dan Bowerman, DC FACO AHFI CPC

512 South 4th St., Philadelphia PA 19147

(267) 970-3128


DrB@Expert-opinions.net or  DrB@Expert-Opinions.com


John Cerf, DC CPC CPMA

Dr. John Cerf, a 1985 graduate of New York Chiropractic College (NYCC), served as the chief of a hospital chiropractic department. In 2001, he became one of the first chiropractors in the United States to be granted privileges to see patients in the hospital emergency department.


In addition, he serves as the Vice President of the American Academy of Hospital Chiropractors and continues as a member of an American Chiropractic Association committee. Dr. Cerf has lectured to chiropractors and medical physicians on the role of chiropractic in hospital and outpatient settings. He is also the author of a number of articles published in the Journal of the American Chiropractic Association and Dynamic Chiropractic. He is the current president of the American College of Chiropractic Consultants.


Dr. Cerf is a Certified Professional Coder (CPC)  and Certified Professional Medical Auditor (CPMA) from the AAPC. In addition, he is certified in electrodiagnostic testing and manipulation under anesthesia (MUA). He has taught at Berkeley College in Manhattan, N.Y. and has been a NYCC and Western States Chiropractic College postgraduate division instructor for both hospital protocols and manipulation under anesthesia.


Dr Cerf continues to practice and serves as a consultant reviewing medical necessity for MUA and chiropractic treatment and is frequently called upon to serve as an expert in these cases during litigation.


Certified, Manipulation Under Anesthesia

Past Chief, Hospital Chiropractic Department

Columnist Dynamic Chiropractic

Licensed in New Jersey, New York, & Michigan

http://www.dynamicchiropractic.com/mpacms/dc/columnist_other_articles.php?id=1506


Contact Information:


John Cerf, DC CPC CPMA

3200 Kennedy Boulevard, Jersey City, NJ 07306

(201) 656-3719


DrC@expert-opinions.net


David Boll, DC CPC PES CKTP 

Dr. David Eric Boll graduated from the Davenport, Iowa campus of Palmer College of Chiropractic in 1992.  He began consulting in the mid to late 1990’s for various insurance carriers after being on staff as the Chiropractic Services Director at a major insurance carrier located in Green Bay, Wisconsin.


Dr. Boll is licensed in Wisconsin and Michigan, performing independent consulting services for various health insurance carriers to include research, guideline development, Independent Medical/Chiropractic Examinations, internal processing procedures, peer review, case management, educational presentations, appeals panel duties, and expert witness work. He is on the panel as a review professional for several URAC accredited review organizations.


He has been a member of the American College of Chiropractic Consultants (ACCC) for nearly two decades, serving as their Vice President for the 2012-2013 term, President for the 2014-2015 term, Immediate Past-President for the 2015-2018 and currently serves as a Board Advisor. 


Dr. Boll is a Certified Professional Coder (CPC) from the AAPC.  In addition, he is certified as a Performance Enhancement Specialist (PES) from the National Academy of Sports Medicine and certified by the National Registry of Certified Medical Examiners to do DOT examinations.


Contact Information:


David Boll, DC CPC PES CKTP

251 Highland St, Adell, WI 53001

(920) 450-6066


Dr.Boll@Expert-Opinion.com

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