Our Accountants

Diana Luttmann, CPA, Senior Manager

Diana Luttmann is a manager and member of the firm’s nonprofit team.  Since joining the firm in 2000, she has focused on nonprofit audit and financial management.  Her areas of concentration include charitable organizations, associations, and charter, choice and partnership schools.  Diana performs audits under Circular A-133 of the Single Audit Act.

As an active member in the community, Diana has provided volunteer services to several organizations including Special Olympics, United Way of Greater Milwaukee, AIDS Resource Center of Wisconsin, Ko-Thi Dance Company, Susan G. Komen Southeast Wisconsin Race for the Cure, Bottomless Closet Milwaukee, Horizon’s Inc., Junior Achievement and the YMCA’s Strong Kids program. Diana also has nine years of board member service through treasurer positions held at Horizon’s Inc. and Wisconsin Breast Cancer Showhouse (WBCS). She has instructed classes at the Nonprofit Center of Milwaukee and been guest lecturer at UW –Milwaukee.

Diana received her bachelor’s degree in accounting from the University of Wisconsin – La Crosse in 1999.  She is a member of the American and Wisconsin Institutes of Certified Public Accountants.  In her leisure time, she enjoys being a mom, hiking in northern Wisconsin, playing volleyball, and gardening.

To talk with Diana about your organization, call her at 414-390-1179 or e-mail This email address is being protected from spambots. You need JavaScript enabled to view it. 

 


Brian Wilson, CPA. Senior Manager

Brian Wilson is a manager and member of the firm’s tax team.  Since joining the firm in 2004, he has focused on providing accounting and tax services to individuals, trusts and estates.

Brian earned his bachelor’s degree in accounting and his master’s degree in taxation from the University of Wisconsin – Milwaukee.  He serves on the board of directors for YP Impact, is involved on the Finance Committee for Artists Working in Education and is a member of the American and Wisconsin Institutes of Certified Public Accountants and the Greater Brookfield Chamber of Commerce.  In his leisure time, Brian, who is an avid sports fan, follows his favorite teams, the Packers, Brewers and Bucks.

To talk with Brian about your accounting and tax needs, call him at 414-390-1189 or e-mail This email address is being protected from spambots. You need JavaScript enabled to view it. 

 


Steven Dittman, CPA, Manager

Steve Dittman is a manager and member of the firm’s nonprofit team.  Since joining the firm in 1998, he has focused on nonprofit audit and financial management.

Steve received his bachelor’s degree in business administration from the University of Wisconsin – Oshkosh in 1993.  He is a member of the American and Wisconsin Institutes of Certified Public Accountants.  When he’s not at work, Steve volunteers his time as treasurer of the Woodland Pattern Book Center.  He also enjoys watching college basketball and attending musical performances.

To talk with Steve about your organization, call him at 414-390-1163 or e-mail This email address is being protected from spambots. You need JavaScript enabled to view it. 

 


Kelly Goodmon, Manager

Kelly Goodmon is a manager and member of the firm’s outsourcing team.  Since joining the firm in 2007, she has focused on outsourcing, financial management and nonprofit audit.

Kelly earned her bachelor’s degree in accounting from the University of Wisconsin – Milwaukee in 2006.  During her studies she received an outstanding achievement award from UWM’s College of Letters and Science’s African American Student Academic Services.  She is a member of the Wisconsin Institute of Certified Public Accountants. 

Kelly, a believer in volunteerism, is an active member of her church, Holy Redeemer, where she serves as secretary and assistant treasurer for the Young Women’s Christian Counsel and is a member of the church’s Women’s Department.  When she’s not working or volunteering, she enjoys spending time with her family.

To talk with Kelly about your organization, call her at 414-390-1184 or e-mail This email address is being protected from spambots. You need JavaScript enabled to view it. 

 


Brian Falk, CPA, Supervisor

Brian Faulk is a supervisor and member of the firm’s tax, outsourcing and nonprofit teams. Since joining the firm in 2012, he has focused on nonprofit audit as well as providing tax and consulting services to individuals and businesses.

Brian received his bachelor’s degrees in accounting and economics from the Marquette University in 2011.He is a member of the Wisconsin Institute of Certified Public Accountants. Prior to graduating, Brian was a two-year participant in Global Business Brigades in Guatemala. When Brian is not at work, he enjoys supporting Marquette athletics, the Green Bay Packers and the Milwaukee Brewers.

To talk with Brian about your organization, call him at 414-390-1192 or e-mail This email address is being protected from spambots. You need JavaScript enabled to view it. 


Barbara Hofstetter, CPA, Supervisor

Barb Hofstetter is a supervisor and member of the firm’s tax team.  Since joining the firm in 2005, she has focused on providing accounting and tax services to individual, business and real estate clients.  In addition, Barb compiles monthly, quarterly or annual financial statements for the firm’s clients, based on their needs.

She received her bachelor’s degree in accounting from the University of Wisconsin – Milwaukee in 2000.  Barb is a member of the American and Wisconsin Institutes of Certified Public Accountants and is a certified QuickBooks ProAdvisor. 

Barb serves on the board of the Friends of Milwaukee Public Library as treasurer.

While not at work, Barb enjoys gardening, reading, cooking and spending time with friends and family.

To talk with Barb about your accounting and tax needs, call her at 414-390-1186 or e-mail This email address is being protected from spambots. You need JavaScript enabled to view it. 


Jim Hennick, CPA, Senior Accountant

Jim Hennick is a member of the firm's tax team. He has over 20 years’ experience in tax – with many of those years working in trust and estate compliance.

Jim received his bachelor's degree in accounting from the University of Milwaukee and is a member of the Wisconsin Institute of CPAs.

Jim enjoys working one-on-one with clients, as well as liking to work with numbers. 

Outside of work, his hobbies include riding a bike and motorcycle, reading, downhill skiing, and jogging. 

To talk with Jim about your accounting and tax needs call him at 414-390-1197 or email This email address is being protected from spambots. You need JavaScript enabled to view it. 

 


Sabrina Mertins, CPA, Senior Tax Accountant

Sabrina Mertins is a member of the firm’s tax team and concentrates her practice on accounting and tax services to individuals and business clients.  

Sabrina received her bachelor’s degree in accounting from the University of Wisconsin – Milwaukee in 1988, and passed the November 1993 CPA exam in one sitting.  She is a member of the Wisconsin Institute of Certified Public Accountants 

Sabrina enjoys reading, traveling, listening to local music bands and going to festivals during the summer months.

"Every day is a new day in Public Accounting.  After many years working in Industry, deciding to move back to Public allows me to experience many different challenges and variety each day. In addition, I like to help people, and using my expertise allows me to do that."  

To talk with Sabrina about your accounting and tax needs call 414-390-1170 or email This email address is being protected from spambots. You need JavaScript enabled to view it. 

 


Sara Paull, CPA, Senior Accountant

Sara Paull is an accountant and member of the firm’s nonprofit team. Since joining the firm in 2015, she has focused on nonprofit audit as well as providing tax services to nonprofit organizations.

After receiving her bachelor’s degree in psychology from Brown University in 2012, Sara received her master’s degree in accounting from the University of Wisconsin – Milwaukee in 2014.

In her leisure time, she enjoys spending time with family and friends, traveling, reading and cooking.

Email Sara about your organization needs at This email address is being protected from spambots. You need JavaScript enabled to view it. 

 


Dan Rasmussen, CPA, Senior Accountant

Dan Rasmussen is a member of the firm’s nonprofit audit team. Dan has experience auditing a variety of clients, ranging from small businesses with less than $1 million in annual revenue to publicly traded companies with over $1 billion in revenue. Additionally, Dan has four years of private/industry accounting experience, giving Dan a unique perspective when providing service to his clients.

Dan received his bachelor’s degree in accounting from the University of Wisconsin-Madison in 2009. Dan has volunteered at various fundraisers for volunteer fire departments.

Outside of work, Dan enjoys avidly following Wisconsin sports teams, including the Badgers, Bucks, Brewers and Packers. He also enjoys spending time with family, taking spontaneous road trips and playing recreational sports.

“Every day in public accounting is different but the one constant is having the opportunity to provide meaningful, valuable service to clients.”

To talk with Dan about your organization needs call 414-390-1165 or email This email address is being protected from spambots. You need JavaScript enabled to view it. 

 


Ryan Rossi, CPA, JD, Senior Accountant

Ryan Rossi is a senior accountant and member of the firm's tax team.  Since joining the firm in 2016,  he has focused on providing accounting and tax services to individuals, businesses and real estate clients. In addition, he has experience with gift tax, foreign reporting compliance and property tax returns.

Ryan received his bachelor degree in 2005 from the University of Wisconsin and his Juris Doctorate in 2010 from Lewis and Clark Law School and his master’s degree in accounting in 2014 from the University of Wisconsin-Milwaukee. He is a member of the Wisconsin Institute of Certified Public Accountants.

When Ryan isn't working, he enjoys spending time with his family, reading and watching the Packers and Brewers.

To talk with Ryan about your accounting and tax needs, call him at 414-390-1160 or e-mail This email address is being protected from spambots. You need JavaScript enabled to view it. 

 


Ha Truong, CPA, Senior Accountant

Ha Truong is a senior accountant and member of the firm’s nonprofit team. Since joining the firm in 2014, she has focused on nonprofit audit.

Ha received her bachelor’s degrees in accounting and finance from the University of Wisconsin – La Crosse in 2013. She is a member of the American and Wisconsin Institutes of Certified Public Accountants.

Outside of work, Ha enjoys traveling, and spending time with family and friends.

To talk with Ha about your organization needs, call her at 414-390-1169 or e-mail This email address is being protected from spambots. You need JavaScript enabled to view it. 

 


 

Tim Yang, CPA, Senior Accountant

Tim Yang is a member of the firm’s Nonprofit team and concentrates his practice on auditing and accounting services to nonprofit organizations.

Tim received his bachlor’s and master’s degree in accounting from the University of Wisconsin-Milwaukee in 2010 and 2011. He is a member of the Wisconsin Institute of Certified Public Accountants and American Institute of Certified Public Accountants.

Tim enjoys spending his time with his family as well as friends.  He loves to play volleyball and also billiards.  

Tim enjoys the interaction between the clients and learning about each client and the different ways to help make a positive contribution to the client.

To talk with Tim about your organization needs, call him at 414-390-1182 or email This email address is being protected from spambots. You need JavaScript enabled to view it. 

  


Jonathan Collins, Staff Accountant

Jonathan is a member of the firm’s nonprofit team and has experience in nonprofit audits.  

Jonathan received his bachelor’s degree in accounting from the University of Wisconsin – Milwaukee in 2011.  

Outside of work Jonathan enjoys spending time with family, playing with his puppy and kayaking. He is always open to new adventures. 

"I have lived in Milwaukee for most of my life and noticed the need for a helping hand the community. I love being able to meet so many people who have a passion to help others. I look forward to contributing to nonprofit organizations, so they can better serve our communities."

To talk with Jonathan about your organization, call him at 414-390-1180 or email This email address is being protected from spambots. You need JavaScript enabled to view it. 

 


Kristen Glatzel, Staff Accountant

Kristen Glatzel is a member of the firm’s nonprofit team. She worked with Ritz Holman as an intern before joining full time as a staff accountant in January 2017.

Kristen received her bachelor’s from the University of Minnesota- Twin Cities in political science in 2011 and a Masters in Accounting in 2016 from the University of Wisconsin – Milwaukee.

Outside of work, she enjoys reading, cooking, being outdoors and spending time with family.

To talk with Kristen about your organization, call her at 414-390-1181 or email This email address is being protected from spambots. You need JavaScript enabled to view it. 

 


Jialin Li, CPA, Staff Accountant

Jialin Li is a member of the firm's nonprofit team. Since joining the firm in 2016, she has focused on serving nonprofit audit clients. In addition, she also has experience working with mutual funds service and airline industry.

Jialin received her master’s degree in accounting from the University of Wisconsin – Milwaukee in 2011. She is a member of the Wisconsin Institute of Certified Public Accountants.

Outside of work, she enjoys traveling and reading.

To talk with Jialin about your organization needs, call her at 414-390-1183 or email This email address is being protected from spambots. You need JavaScript enabled to view it. 

 


Matt Lorenz, Staff Accountant

Matt Lorenz is a member of the firm's tax team.

Matt received his bachelor’s degree in accounting and finance (highest honors) from the University of Wisconsin-La Crosse in December of 2016.

Outside of work, Matt enjoys playing and watching all sorts of sports and being on the water in the summer. He tries to get to as many of his siblings sporting events as possible, and also enjoys socializing with friends. 

"I am looking forward to providing clients with service that is of the highest quality and very reliable, as well as building long-lasting relationships."

To talk with Matt about your accounting and tax needs call 414-390-1173 or email This email address is being protected from spambots. You need JavaScript enabled to view it. 

 


Evan Mol, Staff Accountant

Evan Mol is a member of the firm’s tax team where he works on a variety of tax returns including individuals, partnerships, C corporations, C corporations, and nonprofit.

Evan received his bachelor’s degree in accounting and international business from the University of Wisconsin – La Crosse in 2016. He is a member of the Wisconsin Institute of Certified Public Accountants.

Evan was awarded the rank of Eagle Scout from the Boy Scouts of America in 2011. Outside of work, Evan enjoys spending time with his family, playing soccer and traveling.

“I enjoy the variety of clients that I get to work with on a daily basis, it provides me the opportunity to constantly challenge myself to learn and improve.”

To talk with Evan about your accounting and tax needs call 414-390-1177 or email This email address is being protected from spambots. You need JavaScript enabled to view it. 

 


Wendy Wang, Staff Accountant

Wendy Wang is a member of the firm's nonprofit team.  Since joining the firm in 2016, she has focused on serving nonprofit audit clients.  In addition, she also has experience working with individual, business and real estate clients.

Wendy has a bachelor's degree in computer science from Zhejiang University of Technology and her master's degree in accounting from Marquette University.  She is a member of the Wisconsin Institute of Certified Public Accountants.

When Wendy isn't working she enjoys outdoor activities, reading and cooking.

To talk with Wendy about your organization needs, call her at 414-390-1164 or e-mail This email address is being protected from spambots. You need JavaScript enabled to view it. 

 

 

News

September 21: RitzHolman CPAs celebrates its 60th Anniversary with over 250 guests at The Pilot House on September 14. View pictures from the event on our Facebook page now.

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