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Meet Our CPE Authors

CPASelfstudy’s CPE Authors

Kelen F. Camehl, CPA, MBA

kelen camehlKelen is a CPA with 15 years of progressive finance and accounting experience. Currently, he serves as a Senior Manager of Technical Accounting with HP, Inc. Prior to this role, he served in multiple accounting roles in the oil & gas industry with ConocoPhillips including technical accounting policy, SOX compliance, and global internal audit. He also gained public accounting experience with PricewaterhouseCoopers, working with various clients in the energy, electric, power, gas, and utility sectors in Houston, TX.  Kelen has remained actively involved in CPA exam content development for the past eight years and has authored over a thousand multiple choice questions for various sections of the exam. He also serves as an Editorial Advisor for the AICPA’s “Journal of Accountancy” as well as both an author and technical reviewer for Continuing Professional Education (CPE) courses published by the AICPA. and other cpe provider firms. Kelen received his BBA in Accounting from Texas A&M University – Corpus Christi, TX and an MBA from the University of Texas – San Antonio. He is a CPA licensed in the state of Texas.


Chris Demaline, CPA, CMA, CFE
CPE author -Chris Demaline

Chris is a professor at Central Arizona College. He has taught accounting for more than 10 years. Chris has authored several accounting-related online courses, published accounting cases and presented at accounting conferences. In addition, he has written several questions for the Certified Public Accounting exam and the Certified Management Accounting exam. Chris also provides business start-up and business valuation consulting services. Chris’ formal education includes an MBA from Grand Canyon University as well as a Graduate Certificate in business valuation from Indiana University (Kelley School of Business) and a Graduate Certificate in forensic accounting from Northeastern University. Chris resides in the Phoenix metropolitan area with his wife and son. During his free time, he enjoys hiking in the Superstition Mountains.

Steven Fustolo CPA

fustoloSteven  is a partner with the Boston CPA firm of James J. Fox & Company. He is a frequent lecturer and author of numerous tax and accounting issues affecting closely held businesses. An AICPA author, Mr. Fustolo’s articles are regularly featured in The Practical Accountant and other publications. He is the author of Practice Issues: Compilation and Review, Accounting and Auditing Reference Guide, Everything You Never Wanted to Know About GAAP, Enron: Fraud, Deception and the Aftermath, FASB Review for Industry, Current Developments: Accounting and Financial Reporting, Making Money with Special Engagements, Understanding the Variable Interest Entity Rules, and FASB, SSARS and SAS Update and Review and numerous other books and manuals that have been published by Practitioners Publishing Company (PPC) and Commerce Clearing House (CCH). He is the recipient of several Outstanding Discussion Leader awards from many professional organizations including the New York and Florida Societies of CPAs.

Joseph Helstrom CPA
CPE Author-Joe HelstromJoe is a partner at CFO Resources, LLC, a company focused on training and courseware for CPAs and is also the owner of Mill Creek Publishing LLC, a provider of self-study courses for CPAs. Joe has over 30 years of experience as a CPA in both public accounting and industry with extensive experience in financial reporting and analysis, treasury, tax, information technology, legal and regulatory matters and strategic planning. After graduation from Butler University with a degree in Accounting, Joe got his start at Ernst & Young and, subsequent to that, has served as Chief Financial Officer, Director of Treasury and Tax, Controller and Manager of Financial Planning, Reporting and Analysis for several different companies. Joe, along with his wife Patricia McCarthy, have published articles in Missouri and Texas CPA Society publications titled “Incorporating Excel Arrays into Your Audit Plan”.


L. Keith Jordan CPA
L.Keith Jordan CPA = photoKeith is a Certified Public Accountant with over 35 years of experience in accounting, supervision, and management. His experience in industry has included general, cost and budgeting accountant; accounts payable supervisor; property accountant; assistant controller; and controller. Mr. Jordan is also a Certified QuickBooks ProAdvisor, a QuickBooks Affiliate, a member of the Intuit Inner Circle, and a contributor to the Intuit forums and other forums. For several years, he taught QuickBooks as a classroom instructor and offered consulting services to help clients with management, accounting, and QuickBooks issues while fulfilling full-time employment responsibilities. Mr. Jordan is primarily engaged in technical writing and editing; much of this work involves continuing professional education (CPE) courses for CPAs. As part of this effort, he has been steadily producing QuickBooks courses for CPE since 2000.


Patricia McCarthy, MBA
patricia mccarthyPatricia is a partner at CFO Resources LLC, a company focused on training and courseware for CPAs. Her focus is on Microsoft products and how to use these programs effectively in business. Patricia has been in software training for over 20 years and her client list includes the Indiana CPA Society who awarded her their Outstanding Discussion Leader award. She has been a contributor to the Journal of Accountancy and has published articles in several CPA Society magazines, including Indiana, Missouri, Texas and Arizona. She is also certified as a MOS expert in Excel. Patricia is a graduate of the College of the Holy Cross and also holds a M.B.A. from Babson College. She was a full-time MIS Lecturer in Butler University’s School of Business for six years and has taught at several of Indiana’s other universities. She also has extensive business background in audit and financial functions.  Patricia runs a blog called “Chatting About Excel and More” which can be found at . She has recently started a new blog originally entitled “Blog for CPAs”  that covers topics of interest to CPAs including Excel.

David Ringstrom, CPA

David Ringstrom CPE Author
David H. Ringstrom, CPA owns Accounting Advisors, Inc., a spreadsheet and database consulting firm that he started in 1991. In addition to teaching scores of webinars each year on Excel and other topics, David has written hundreds of freelance articles on spreadsheets. He has served as the technical editor for dozens of books on accounting software, and his first book will be published February 2016.



Danny Santucci, JD

Danny  received his Juris Doctorate from Boalt Hall School of Law, University of California at Berkeley in 1972 at which time he began practicing as a tax attorney in Southern California. In 1980, Danny established the law firm of Santuci, Potter and Leanders in Irvine California. He went into sole practice in 1995 due to increasing lecture and writing committments. His practice focuses on business taxation and estate planning. He has been active in a number of California bar associations and has been a lecturer for a number of state CPA Societies. Danny is a prolific author of tax and financial books and articles


Mary Schaeffer

photo- Mary SchaefferMary has the inimitable ability to find accounts-payable-related solutions that really work—without making a major dent in the bottom line. She takes a “roll up your sleeves and dig into the details” approach to finding solutions to those problems that cause migraines for CFOs, controllers, and managers. Fifteen years spent researching and writing about payment issues gives Mary Schaeffer a unique vantage point. Combine that with an almost equal amount of time spent in the corporate trenches of several large finance and treasury departments and you’ll see why she’s become known as America’s leading accounts payable expert.

Mary is the author of 15+ business books and  runs AP Now, a boutique publishing and consulting firm focused on accounts payable issues.  She speaks regularly at industry events, one-day seminars and online. Mary has a BS in Mathematics from York College (CUNY) and a MBA in Finance from New York University. .

Dr. Jae Shim Ph.D, CPA
Dr. Jae K. Shim is Professor of Business at California State University, Long Beach. He is a co-author of over 50 professional business books. He was been published by Wiley, McGraw-Hill, Barron’s, CCH, Thompson-Southwestern, Penguin, Prentice-Hall, American Management Association (Amacom), and the AICPA. Dr. Shim received his MBA and Ph.D. degrees from the University of California at Berkeley (Haas School of Business). He has been a consultant to commercial and nonprofit organizations over 30 years. He writes for Delta Publishing and writes self study accounting and ethics cpe.


Deanna Sullivan 

sullivan -author cpeDeanna Sullivan is a Certified Public Accountant, Chartered Global Management Accountant, Certified Internal Auditor, Certified Fraud Examiner and holds a Certification in Risk Management Assurance. An internationally-recognized speaker, author and trainer, Deanna Sullivan has made it her mission to ensure education is effective as well as fun. Her goal for every session is to educate, entertain and motivate the participants to achieve their personal and professional goals. Deanna has a diverse background ranging from auditing and accounting to consulting and training. Formerly a partner with Arthur Andersen’s Risk Consulting Practice, Deanna led the development effort for the firm’s Business Self-Assessment methodology, Quality Assurance Review methodology and Global Best Practices for Internal Audit. Earlier in her career, Deanna was responsible for international and operational auditing at several energy companies in Texas. She received her BBA in Accounting from West Texas State University. Deanna is certified to teach ethics for Texas CPAs.

Michael Walker CPA
CPE Author-Michael WalkerMichael J. Walker is a New England-based Certified Public Accountant with over 14 years of accounting experience in the financial services, information technology services and construction industries. He is currently a Vice President at one of the largest financial institutions in the world. He has an extensive technical accounting background that includes hands-on experience with U.S. GAAP, Canadian GAAP and International Financial Reporting Standards (IFRS). His expertise includes the accounting for derivatives, fixed income investments & securitizations.



Paul J. Winn, CLU,ChFc
CPE Author-Paul WinnPaul J. Winn CLU ChFc is a financial writer, editor and trainer in the insurance industry. Past positions have included product developer, compensation officer, marketing VP, VP of strategic planning as well as being President of Maryland Financial Corporation. Mr. Winn has served on multiple Insurance Industry Boards including Baltimore Chapter of CLU and ChFC and Member/Secretary, Advisory Board to New York State Insurance Department. He is well known as a writer and editor of major mutual life insurance company’s agent-training ”university” and has created more than 100 training/continuing education courses. He is also a published book author.

  • Thank you Patricia. I really love your courses. I learned so much about excel this weekend!”

    - Connie K.

  • Your website was easy to navigate and informative.” “This was my first use of your resources but I’m sure it won’t be my last. Thank you for your excellent course material and succinctly stated instructions which expedited order and payment of course selection, completion of exam, and immediate availability of Certificate of Completion. A great experience. Thanks.

    - Draper

  • “I am extremely impressed with the courses and the reasonable price.” -Janet A. May 2017

    - Janet