Adam Borst - Vice President of Acquisition Searches

Adam graduated from Kansas State University with dual degrees in Financial Management and Financial Services and a minor in Economics.  While attending Kansas State he was an officer of the Student Finance Association and their first lead bond fund manager.  After graduating, he worked as a lead portfolio manager for a large Midwest registered investment adviser; where he ran his absolute return strategy, delivering superior risk adjusted returns for his clients (relative to the market and benchmarks).  He then worked extensively as an independent market maker and consulted for a publicly traded company as a market cap consultant.  His understanding of risk/reward trade offs and potent growth catalysts allow him to find strong matches for our clients.  Adam lives in Lincoln, Kansas with his wife and daughter.

Adam can be reached at 913-944-2285 or by email at 

Jason Williams

Jason graduated Cum Laude from Kansas State University with a degree in Business Administration and a Major in Marketing.  While attending Kansas State he competed as a decathlete and was able to achieve Big 12 Champion and NCAA-All American. After college he ran a successful business for several years. He brings the same determination and drive that made him successful in school, the decathlon, and business to Vista Business Group and his clients. Jason lives with his family in Twin Falls, Idaho. 

Jason can be reached at 913-944-2285 or by email at

David Norris, MD, MBA

Dr. Norris practices as a cardiothoracic anesthesiologist in Kansas. While serving in leadership positions for his practice, he realized he needed more knowledge about the business side of healthcare and decided to return to school for more education. It was during his business school education experience that David discovered his real passion – to help others improve their business intelligence and become stronger leaders through education. He works with academic departments, medical societies, and practices of all sizes to improve the business intelligence of healthcare providers.  Dr. Norris teaches on leadership, financial intelligence, and negotiations at many regional and national conferences including those of the Medical Group Management Association and the National Association of Managed Care Physicians. He is a columnist for Physicians Practice and the American Association for Physician Leadership. His first book, “The Financially Intelligent Physician: What They Didn’t Teach You in Medical School” was released in 2017. 

Dr. Norris can be reached at 913-944-2285 or by email at 

Michael Haulsee

Dr. Haulsee holds a Doctor of Pharmacy from Mercer University and BS in Biology from East Tennessee University.  From his early days as a clinical pharmacist to international consultant, he has developed a keen understanding of the complicated dynamics that can impact effective business.  Dr. Haulsee's experience is gained through his involvement with many facets of the pharmaceutical industry.  He has owned pharmacy businesses worldwide, developed pharmaceutical manufacturing companies, assisted in the successful formation of international specialty pharmacies, and has become keenly knowledgeable of foreign cultural and regulatory differences.  For over 20 years, Dr. Haulsee has assisted many small to medium sized businesses within the pharma industry.

Dr. Haulsee can be reached at 913-944-2285 or by email at 

Vista Business Group is growing:

Michael Gadberry

Michael, who grew up in Central Kansas, comes from a family of small business owners and entrepreneurs.  He attended both the Universities of Northern Colorado and Kansas.  Realizing the dream of business ownership, ultimately began with a successful sales and marketing career and culminated in the founding of several businesses.  Through the years he has worked with customers to provide solutions utilizing tools for predictable management, financial and operational business analytics and now brings his experience to Vista Business Group.  "It is exciting to be part of the Vista Team, and I look forward to helping our clients reach their goals." 

Michael can be reached at 913-944-2285. 

Colleen Biggs - Chief Operations Officer

Colleen joined Vista Business Group in January 2016, bringing with her 25 years of banking experience. She attended Friends University and received her Associates Degree in Accounting. Colleen lives in Lincoln with her family and spends her free time attending her kid's sporting events, spoiling her grandchildren and when the weather is right, at the lake with friends!

Colleen can be reached at 913-944-2285 or by email at

Zac Walter - Vice President of Acquisition Searches

​Zac graduated from Concordia University Nebraska with a bachelor's degree in Business Administration.  While attending Concordia he competed in football and worked at a financial services company.  Following graduation, he worked selling insurance in the healthcare industry for the greater part of a year.  Zac lives in Lincoln, Kansas where he enjoys to farm, hunt and golf in his free time.

Zac can be reached at 913-944-2285 or by email at 

Our Team

Deb Mazzaferro

Deb works with specialty food entrepreneurs to create and implement their go-to-market Sales and Marketing strategy.  After successfully working as a National Sales Manager for many years, she saw a need for specialty food companies with awesome products to understand the sales process and learn to embrace industry standards in order to be successful.  Since 2001, she has worked with over 160 companies in all areas of Consumer Packaged Goods food products with the primary function being to grow revenue.  She also shares her experience through various speaking engagements.  Deb is a Sommelier (for fun), an accomplished cook and plays to a 22 handicap!

Deb can be reached at 913-944-2285.

Mark Obermueller - President

Mark began his career as a banker in 1989, after twenty two years and reaching the level of President and CEO, he started Vista Business Group.  Mark's understanding of buyer, seller and banking needs, allow him to structure deals that sell.  Mark is located in Lincoln, Kansas and earned a Bachelor's degree from Fort Hays State University.

Mark's phone number is 913-944-2285 and his email address is

If you have an interest in joining our team please contact Mark Obermueller at 913-944-2285 or by email at  

Dr. Bill Goodman

Dr. Bill Goodman is a Technologist, Entrepreneur and a Master Results Coach and Speaker. He has a PhD in Materials Science and Engineering from UCLA and has worked in Space, Defense and Aerospace his entire career.  Bill’s skill sets include: business planning, marketing, commercialization plans, customer negotiation, and financial and technical risk mitigation. Bill is skilled in proposal writing and capture strategies, export control, and commodity jurisdictions. Bill has previously managed diverse engineering groups; including physicists, thermal and structural engineers, optical and mechanical engineers, and information technology engineers.  Since the 1990's, he has been employing his skills in business to help his clients strategize and negotiate, overcoming obstacles and positions that were perceived as insurmountable.  

Dr. Bill can be reached at 913-944-2285 or by email at 

Adam Schmidtberger

Owner of a SDVOSB engineering company, Adam served 10 years in the U.S. Navy as a Navy SEAL and Surface Warfare Officer with deployments to Afghanistan and the Middle East.  He earned his undergraduate degree from the University of Pennsylvania's Wharton School of Business.  He lives in Wichita, Kansas with his wife and children.

Adam can be reached at 913-944-2285 or by email at 

J.C. Strauss

J.C. brings 30 years of experience in Mergers & Acquisitions to Vista Business Group.  He is a skilled negotiator, achieving optimum structure and terms for each transaction.  He has represented buyers and sellers and is equally comfortable on either side of the table.  He has worked in several industries, including oil & gas, waste managment, commercial real estate, construction, power sports and food service.  J.C. is located in Southern California and holds a B.S. in Business Administration Finance from SDSU.

J.C. can be reached at 913-944-2285 or by email at

Bart Davey

Bart brings 35 years of financial analysis and corporate funding to Vista.  He has developed an extensive network of private equity funds providing capital to qualified buyers.  He works with funds that have different areas of expertise and different investment profiles.  Generally funding deals in excess of three million dollars. Bart resides in Richmond, Virginia. The bankers he works with can provide funding as well as expert advice on structuring and capitalization. 

Bart can be reached at 913-944-2285 or by email at

Kevin M. Schon

In his 33 years focusing on the medical field, Kevin has assisted healthcare clients in meeting their financial objectives and creating value by leveraging his expertise through both ownership and consulting.  Having advised hundreds of physicians, pharmacists and physical therapists on the growth or sale of their business, Kevin maintains strong investor relationships with venture capital funds, private equity firms, strategic investors and debt providers.  Kevin was among the first in the U.S. to create a proprietary model for fully funding practice acquisitions when he launched a national referral program with CIT Small Business Lending the nation’s largest SBA lender at the time.  His efforts in creating managed care organizations, preferred payment networks and group purchasing organizations have benefitted employers and healthcare practitioners in each state.

Kevin was also an early pioneer in telehealth, as he was the grant administrator for an $8.3 Million U.S. Department of Commerce grant, which was utilized to expand telemedicine/telepharmacy services throughout the UnityPoint Health/Iowa Health System network. 

Kevin can be reached at 913-944-2285 or by email at