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Our Team

Learn about our mission, values, and vision on our about page!

What Our Clients Are Saying!

Melissa is great to work with. She understands the needs of short and long range financial planning. She is able…read more

Melissa has been working with my organization for over a year, and I am thrilled with the progress we’ve made…read more

Tomlinson Financial Group has become an integral part of the Tucson Metro Chamber's team. They’ve helped us improve and streamline…read more

I've worked with Melissa for a few years and have been impressed with how she listens to our organization's goals…read more

I can always count on CPA Melissa Tomlinson and her team to deliver excellence in all areas of financial management…read more

Sharon C. Ballard, CEO

Shelby filled a very critical role for our organization. Her analysis and recommendations helped reframe the organizations financial structure allowing…read more

Jennifer Lohse, Former Board Member

I’ve had the privilege to work with Melissa Tomlinson for three years. She is thorough, detailed oriented, knowledgeable in more…read more

Marcela Molina, Executive Director
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Melissa Tomlinson is a Certified Public Accountant (CPA) and Certified Government Financial Manager (CGFM). She has experience in public accounting as an auditor specializing in governmental, not-for-profit, restaurant/hospitality, and manufacturing entities. She also has experience in providing CFO and advisory services to special taxing districts, not-for-profits, and closely-held and private companies. Her areas of specialty include financial processes and internal controls review, government grant and contracts compliance, and special taxing districts. Her community involvement includes serving on the board as the Treasurer for the Tucson Girls Chorus, servings on the finance committee of United Way of Tucson and Southern Arizona, as well as formerly serving as a finance committee member for the Diaper Bank of Southern Arizona, as well as past service as the Treasurer of the Board for the International School of Tucson. Melissa lives in Tucson and has an Accounting degree from the University of Arizona (Summa Cum Laude). She likes to spend time with her husband and children and traveling in the US Southwest.

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Shelby Gaither is a licensed CPA in the state of Arizona with 14 years of experience. She is the Treasurer of Beads of Courage, an arts-in-medicine nonprofit with operations in more than 300 hospitals worldwide. She is actively involved in masonic fraternities, holding multiple leadership positions in The Order of the Eastern Star. She has previously served 5 years on the board of The Junior League of Tucson including as President and as Treasurer. She also spent 5 years on the board of The Diaper Bank of Southern Arizona, including as Vice President, Secretary and Treasurer. She was a 2014 recipient of the Tucson 40 under 40 Award. Shelby has close to a decade of experience in tax preparation and was most recently the Supervisor of Financial Reporting and Budgeting for Truly Nolen of America, Inc. a Tucson-based pest control company with branches and franchises in 18 states. Shelby lives in Tucson and has a degree in Accounting from the University of Arizona. In her spare time, she enjoys camping, running and spending time with her husband, Logan and their dog, Denney.

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Mary Tomlinson has more than twenty years of experience working with Accounts Payable, Accounts Receivable and Payroll. Mary has provided a sound background in work process innovation which is essential to streamlining and ensuring effective and financially viable organizations. Mary was most recently employed by a Tucson-based health and human services organization. She was in full charge of all Accounts Payable and payroll for over two hundred employees. This included auditing of invoices and payment processing to vendors and contractors by maintaining accounts and purchase orders in an integrated accounting system to ensure timely payment. Mary is well organized, detail oriented, methodical and adept in managing multiple projects. She attended McLaughlin Business College and successfully completed the required proficiency in accounting, business practice, and computer skills. Mary loves to spend time with her grandchildren, Bobby and Lauren.


Chelsea is an Oregon native that is currently located in Peoria, Arizona, where she attends ASU. She has notable experience in leadership and management roles. Her passion for helping others has inspired her to pursue a degree in Psychology with the intention of obtaining a law degree thereafter. In the realm of accounting, she enjoys finding little ways to make a big difference through organizational and innovative thinking and is keen when it comes to detail-oriented projects. In her spare time, she enjoys photography, activities outdoors, and spending time with her boyfriend, Shane. Chelsea is also passionate about getting involved in her community and is most looking forward to volunteering once it is safe to do so.

CFO Consultant

Treth Sanchez joins us with over 15 years’ experience in leadership and data analysis.  She has a diverse knowledge base spanning several areas, including finance, project management, and operational best practices. Her experience ranges from working for one of the top international accounting firms to national non-profits. She holds her undergraduate degree in Operations and her Master of Business Administration with an emphasis in Human Resources; however, all her professional employment has been in accounting and financial analysis. She is currently pursuing her Certification in Managerial Accounting (CMA).

Treth’s education and background allow her to see directives from a multitude of angles. She’s talented in streamlining processes and standardizing reporting.  She has assisted in multiple accounting and payroll system implementations and has been involved in acquisitions and mergers. Treth is passionate about serving the Tucson community and has held a past board position with Dancing In the Streets and volunteers as a NYS Volleyball Coach. When not working or volunteering, Treth enjoys spending time with her husband, a local chiropractic physician, and their three children.  Treth is often asked about the meaning behind her name; she was the first girl born into her family in 15 years and is named after her uncles- Tommy, Ronnie, and Seth.

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