Firm Leadership

At GYF, our professionals value the close relationships they form with our clients. We seek to partner with you, serving as a trusted and valued resource.

Our Team

Our professionals truly understand the importance of quality and commitment. The majority of the professionals in our Audit & Assurance Services and Tax Advisory & Compliance Services groups hold the Certified Public Accountant (CPA) designation. We ensure that quality service is provided to our clients by hiring individuals with strong academic and professional experience, providing professional training, and maintaining a high level of management involvement on each account.

The collective effort of our professionals has resulted in our firm earning an excellent reputation in the business community. We are committed to helping you meet your individual or organizational financial needs with the quality that you deserve.


Melissa A. Bizyak

Melissa A. Bizyak, CPA/ABV/CFF, CVA

Partner – Business Valuation & Litigation Support Services

Melissa, who joined GYF in 1997, leads the firm’s Business Valuation & Litigation Sup-port Services Group. She has practiced in public accounting for more than 25 years and has significant experience in providing business valuation services for privately-held concerns and their owners.

Melissa’s business valuation experience is diverse, with clients including both private and publicly-held companies in a wide variety of industries. She has performed valuations for various purposes such as financial reporting, equitable distribution, buy/sell transactions and dissenting shareholder disputes, Employee Stock Ownership Plans (ESOPs), value enhancement, and gift and estate tax strategies. Melissa also provides litigation support services, including expert witness testimony.

  • Local/regional instructor for firm-sponsored CLE and CPE courses
  • National instructor for NACVA
  • Past chair and member of Executive Advisory Board for NACVA
  • Member and past president of the Estate Planning Council of Pittsburgh
  • Board member for the Pittsburgh Children’s Museum
  • PICPA Women to Watch – 2017
  • Graduate of the Leadership Development Initiative (LDI), a Leadership Pittsburgh Inc. program
Jeffry A Ford

Jeffrey A. Ford

Jeffrey A. Ford, CPA, MBA

Partner – Audit & Assurance Services and ERP Solutions

Jeff is one of the three partners who founded the firm in 1990. He has focused his career on providing accounting, auditing and consulting services to privately held companies and not-for-profit entities. Jeff also serves in leadership positions for several professional organizations.


Jeff has over 35 years of experience in public accounting and technology consulting. His experience includes furnishing compliance services such as audits and reviews; due diligence and investigation services related to business mergers and acquisitions; fraud investigations; developing and compiling projected and forecasted financial statements; and evaluating, selecting and implementing technology systems for companies in the wholesale, distribution, service, manufacturing, construction and not-for-profit industries.

Jeff’s experience includes significant advisory and accounting services related to business acquisitions and sales. In this arena, he has assisted numerous companies with due diligence, structuring transactions, transition consulting and dispute resolution. Jeff has served a variety of ownership groups including public and private companies, private equity groups and foreign investors. He has provided expert testimony and services related to litigation support, arbitration and mediation in connection with business acquisitions, contract disputes and certain bankruptcy matters.

Robert Grossman

Robert J. Grossman

Robert J. Grossman, CPA/ABV, ASA, CVA, CBA

Partner – Tax Services and Valuation & Litigation Support Services

Bob, one of the firm’s founding partners, has over 40 years of experience in public accounting. He specializes in tax and valuation issues that affect businesses as well as their stakeholders and owners. Bob has extensive experience working with the Internal Revenue Services and also serves as an expert witness in litigation matters.

Bob is a leader in the firm’s Tax and Business Valuation Groups. The breadth of his involvement encompasses the development and implementation of innovative business and financial strategies designed to minimize taxation and maximize owner wealth.

Through the course of his career, Bob has risen to a level of national prominence in the business valuation arena. His expertise in business valuation is well known, and Bob is a frequent speaker, regionally and nationally, on tax and valuation matters. He has also written many articles for business publications and professional trade journals.

Donald S. Johnston

Donald S. Johnston, CPA, MST

Partner – Tax Services

Don joined the firm in 1993, and has over 30 years of public accounting experience. He has spent the majority of his career serving the tax and consulting needs of privately-held companies and their owners. Don also has expertise with issues related to business entity formation, transactions and exit planning.

Don handles tax planning and compliance-related issues for all types of entities, including corporations, LLCs and partnerships, for a wide base of clientele, ranging from small start-up organizations in the early development stages to large, billion-dollar entities in need of technical expertise.

His broad range of experience encompasses many industries, including manufacturing, nuclear energy and mining. Don also has extensive experience working with distribution entities and has devised tax-savings strategies for income, franchise and other business-related taxes for numerous middle market clients.

Additionally, Don’s background allows him to assist individuals and businesses in determining advantageous strategies for mergers, acquisitions and divestitures. His skills have been utilized for special projects in various areas of expertise, including: acquisition planning and due diligence, Section 338(h)(10) acquisition work; stock vs. asset sale analyses for acquisition and/or disposition scenarios; development of strategies to reduce state tax obligations of multi-state entities; complex valuation-related issues; and other tax concerns for individual clients.

Mark D. Wolstoncroft, CPA

Mark D. Wolstoncroft

Mark D. Wolstoncroft, CPA

Partner – Audit & Assurance Services

Mark joined the firm in 2000, and was named as a partner in 2019. His experience includes performing audits and reviews, conducting fraud investigations, and delivering other specialized consulting services to clients in a wide range of industries. He also has expertise with merger and acquisition transactions and employee benefit plans.

Mark focuses on serving privately-held companies, employee benefit plans and not-for-profit organizations by providing effective and responsive professional services. He has served a variety of stakeholders and ownership groups including privately-held companies, private equity investors, foreign-owned entities, trustees of multi-employer benefit plans and not-for-profit organizations across a wide range of industries.

A leader in the firm’s M&A and employee benefit and practice areas, Mark enjoys complex accounting and financial matters that require research, analysis and clear communication. He is committed to providing insightful, value-added services tailored for specific client needs and circumstances. He is experienced with matters such as quality of earning analyses, purchase accounting, GAAP-to-IFRS conversions, hedge accounting and accounting record reconstruction.

John M. Yanak, CPA

John M. Yanak

John M. Yanak, CPA, MBA

Partner – Audit & Assurance Services

John is one of GYF’s founding partners and serves as the managing partner for the firm. He has more than 40 years of experience providing audit, accounting and consulting services. John’s expertise also includes significant transaction work in both the buy and sell arenas as well as specialized services for employee benefit plans.

John has spent more than four decades serving the audit and accounting needs of privately-held businesses and not-for-profit organizations, including educational institutions, trade associations and community service groups. He has also assisted private equity groups and corporate entities with due diligence and structuring decisions, guiding efforts to achieve desired tax efficiencies that help reduce the cost of a transaction. In addition, he helps companies interpret the financial reporting requirements associated with M&A transactions.

John has served as an acting chief financial officer for companies during the closing of offices or operations and during periods of difficulty when the companies required expertise above that available in their own organizations. He has also assisted a number of companies through workouts and reorganizations, including formal proceedings under Chapter 11 of the U.S. Bankruptcy Code and has helped clients to obtain financing and negotiate with lenders.


Eric V. Anthony

Eric V. Anthony, CPA

Manager – Audit & Assurance Services

Eric has eight years of experience in public accounting. He specializes in the provision of audits and other financial statement services. Eric’s expertise also includes employee benefit plan audit services and transaction consulting work related to acquisitions.

Eric provides accounting and assurance services to clients in a wide range of industries including technology, manufacturing, construction, and not-for-profit entities. He also performs audits of employee benefit plans.

In addition to the transaction consulting services Eric provides to his GYF clients, he also serves as a general consultant to various entrepreneurs and small businesses in the Pittsburgh region, assisting them throughout the start-up process.

Richard E. Dynoske

Richard E. Dynoske, CPA

Senior Manager – Tax Services

Rick is well-known to GYF’s clients, having served their tax needs for 25 years. His expertise includes the development and implementation of innovative business tax structures. He also utilizes his skills and knowledge to apply personal financial planning strategies to minimize the overall effect of income, excise, sales and estate and gift taxes.

Rick has nearly 30 years of experience in financial services and public accounting. He specializes in providing tax planning and tax compliance expertise for publicly and privately held companies and their owners. Rick spends considerable time handling consolidated return issues also has expertise assisting not-for-profit organizations with their tax matters.


Shawn M. Firster

Shawn M. Firster, CPA

Senior Manager – Tax Services

Shawn has more than 20 years of public accounting experience. He provides tax compliance and planning services for various types of businesses, including corporations, LLCs and partnerships, as well as their owners. Additionally, Shawn has extensive experience in state and local income tax and sales and use tax matters.

Shawn has experience providing tax planning and compliance services for companies in a variety of industries, including manufacturing, energy production and private equity. He has performed special project work for clients, over extended periods of time, in a variety of areas, including merger and acquisition analysis; multi-state tax planning; tax provision analysis; and cost segregation analysis.

Before joining Grossman Yanak & Ford LLP in 2000, Shawn worked at another regional public accounting firm. During his tenure with that firm, his responsibilities included tax compliance and research for individuals and their closely-held businesses. Additionally, Shawn performed compilation, review and audit services for various businesses and not-for-profit entities.

  • Graduate of Leadership Pittsburgh, a 10-month program that provides the exposures, experiences and connections to prepare participants to tackle the challenges of senior leadership in our community

Ryan A. Fronius

Ryan A. Fronius, CPA

Manager – Tax Services

Ryan has seven years of experience in public accounting, specializing in the provision of tax compliance, planning and research services. He also has expertise in special project work, including services relating to M&A transactions, and performing analyses and projections for varied purposes.

Ryan serves a variety of clients, including corporations, partnerships, S corporations, limited liability companies, tax-exempt nonprofit entities, and individuals. He has experience working with both publicly and privately held companies in various industries, including those operating in multiple states.

He often engages in special projects in a variety of areas including transaction work, acquisition planning and due diligence, stock vs. asset sale analyses, fixed asset depreciation analyses, consolidated entity matters, as well as quarterly and annual tax projections for both business and individuals.

Andrew R. Giallonardo

Andrew R. Giallonardo, CPA

Manager – Audit & Assurance Services

Andy has spent his entire public accounting career at GYF, joining the firm in 2012. He focuses on providing quality financial statement and consulting services to companies in a variety of industries. Andy also has expertise with providing audit services for employee benefit plans and health insurance purchasing cooperatives.

Andy has more than eight years of experience in public accounting. He specializes in providing audit, review and compilation services for a variety of clients including manufacturers, construction contractors and not-for-profit organizations. Andy also has experience serving employee benefit plans and health insurance purchasing cooperatives.

Jason P. Hardy

Jason P. Hardy, CPA

Manager – Audit & Assurance Services

Jason has nearly 15 years of experience in public accounting, specializing in providing audit services for a wide range of businesses and not-for-profit organizations. He also performs nonattest services, such as agreed-upon procedures, compilations and reviews, as well as transaction consulting services.

Jason joined GYF in 2015, and during his tenure with the firm, has focused his expertise on providing financial statement services for our clients. He also has specialized expertise in serving health insurance purchasing cooperatives and performing pension and non-profit audits.

  • Jason is a graduate of the AICPA Leadership Academy, which develops rising leaders in the professional accounting field.

Brad W. Matthews

Brad W. Matthews, CPA/ABV, CVA

Manager – Business Valuation & Litigation Support Services

Brad has practiced in public accounting since 2011. He focuses on providing valuation and litigation support services for privately-held concerns and their owners. Brad’s experience includes financial statement and historical financial trend analysis, financial modeling, business risk assessment, as well as performing calculations required for the preparation of business valuations and other consulting projects.

Brad has served clients in many industries and has played a significant role in providing business valuation services for a range of purposes including gift and estate tax planning, Employee Stock Ownership Plans (ESOPs), marital dissolutions, corporate divorce/shareholder disputes, financial and tax reporting, buy/sell transactions, and general business planning. Further, his litigation support experience includes the determination of lost profits and economic damages arising from various disputes.

Angela C. McCoy

Angela C. McCoy

Senior Manager – ERP Solutions Group

Angie has over 20 years of professional experience. Her ability to interpret a wide range of complex business processes, along with her extensive knowledge of ERP/Financials is the winning combination needed to provide exceptional insight into improving clients’ business processes and software-driven workflow requirements.

As Senior Manager of the GYF ERP Solutions Group, Angie leads the efforts to help clients choose and implement a best-fit ERP/Financial software solution. The ERP Solutions Group is a channel partner for industry-leading software vendor, NetSuite.

Angie joined GYF in 2014 with more than 15 years of experience in distribution and logistics software and related technology. Throughout her career, Angie was committed to both business development and client satisfaction through varying roles including Client Trainer, Systems Analyst, Project Manager, Sales Support and, ultimately, Director of R&D and world-wide support. Through these experiences Angie developed the critical skills necessary to understand the unique requirements of various industries.

  • Distribution
  • Manufacturing
  • Service Businesses
  • Technology
  • Association Management

James F. O'Mara

James F. O’Mara, CPA

Manager – ERP Solutions Group

Jim combines his accounting background and technology experience to serve the clients, with a focus on providing support for implementations of NetSuite ERP solutions. He works directly with GYF’s clients to improve businesses processes, train users, and help organizations to maximize their technology investments.

Prior to joining the GYF ERP Solutions Group in 2018, Jim worked in professional services at an international public accounting firm, and at Fortune 500 companies in the Pittsburgh area within the manufacturing and pharmaceuticals industries. He brings a cross-functional background stemming from his experience in the areas of Audit and Assurance, Management Consulting, Systems Implementations, and Process Improvement.

Each NetSuite implementation can be customized to utilize the modules and other features to meet the needs of the individual client. Jim has experience implementing NetSuite systems and working with industry-specific functionality, including project management, reporting/saved searches, procure to pay, and order to cash.

  • Distribution
  • Manufacturing
  • Service Businesses
  • Technology
  • Association Management

Amber M. Pinskey

Amber M. Pinskey, CPA

Manager – Audit & Assurance Services

Amber joined the firm full-time in 2013 after serving as a GYF intern the summer before. Over her seven-year career, she has been dedicated to continually expanding her knowledge and client responsibilities. Amber provides a range of assurance services, including employee benefit plan audits. She also serves as a coach for newer GYF professionals.

Amber has seven years of experience in public accounting. She specializes in providing assurance services for a variety of clients including manufacturers and not-for-profit organizations. She also has significant experience in construction accounting, business acquisition transaction work and performing employee benefit plan audits.

Robin M. Ryan

Robin M. Ryan, CPA

Senior Manager – Audit & Assurance Services

Robin has served GYF’s clients for over two decades. She is committed to building lasting relationships in addition to providing high-quality professional services. Robin is also dedicated to helping her colleagues, serving as the firm’s    CPE coordinator and as a mentor for younger accountants. She is passionate about serving not-for-profits, including our clients as well as organizations for which she volunteers.

Robin has more than 20 years of experience in public accounting and has worked in multiple disciplines, including audit and assurance, tax and technology services. She specializes in the provision of audit services for privately-held companies, educational institutions, not-for-profit entities and foundations. Robin also has significant expertise with Fixed Asset software.

Erika F. Tallerico

Erika F. Tallerico, CPA

Senior Manager – Audit & Assurance Services

Erika has been with the firm since she worked as a GYF summer intern in 2005. She is dedicated to providing quality assurance services to the companies and organizations she serves. Erika also has expertise working with employee benefit plans and M&A transactions.

Erika has 14 years of experience in public accounting. She provides assurance services to a wide range of clients, including manufacturing, real estate, technology and not-for-profit entities. Her expertise also includes performing benefit plan audits and merger and acquisition consulting work.

Megan R. Troxell

Megan R. Troxell, CPA

Senior Manager – Audit & Assurance Services

Megan not only provides excellent professional service to the firm’s clients, but also contributes significant time and expertise to serving her community. She is a valued coach and mentor for newer CPAs at the firm and for developing professionals in the organizations for which she volunteers. In 2020, the Pennsylvania Institute of Certified Public Accountants (PICPA) named her as a “Women to Watch,” in recognition of her commitment to the profession.

Megan has more than 16 years of experience in public accounting. She specializes in providing audit and accounting services for privately-held manufacturing, construction and oil and gas support companies, as well as nonprofit organizations, including educational institutions. Her responsibilities also include due diligence work relating to acquisitions.

Michael E. Weber

Michael E. Weber, CPA, JD

Senior Manager – Tax Services

As both an accountant and an attorney, Michael provides valuable expertise to the clients he serves in a variety of industries. He specializes in providing tax planning and compliance services as well as assistance related to the formation of new entities. Michael also helps corporate and individual clients to address international tax issues.

Michael has over 10 years of professional experience, including nine in public accounting. His responsibilities primarily include the provision of tax compliance, planning and research services for corporations, S corporations, partnerships, limited liability companies and not-for-profit organizations, as well as individuals.

He has provided services for both domestic and international clients. His principal clients include manufacturing, real estate and service-oriented companies. He also assists new entities with their formation, planning and tax compliance matters.