Our Story

Dan Musick, CPA PLLC was originally founded in 1982 by Sam Cooper, CPA. Sam opened his office in a small building in San Marcos with nothing but a calculator and a chair. Sam owned and operated the Firm until 2004, expanding to Buda along the way. In 2004, Steve Cook, CPA purchased the San Marcos practice and the Firm became known as Cook & Associates. Under Steve’s management, the firm grew to include offices in Austin and San Antonio. In September of 2010, Dan Musick, CPA purchased the San Marcos practice and it became Dan Musick CPA PLLC. The Firm currently serves almost 400 clients across the state of Texas. We have come a long way from “a calculator and a chair” but we never forget that any success that we may achieve depends on our clients.

DMCPA offers a wide range of tax, bookkeeping and accounting, consulting, and payroll services. Through strategic alliances with business partners, we are also able to help our clients find help with financial planning, insurance, banking, and legal services. We believe that what sets DMCPA apart from our competition is our commitment to providing the client with someone who will be on their team and take an interest in their growth and success – as opposed to just being someone like the dentist who they see once a year only because they have to.

Meet the Team

Write something about the people who make your business go or your philosophy behind customer service.
Why? Because people want to know who they're doing business with. It's a human thing.


Dan Musick


Dan is a 1996 Summa Cum Laude graduate of Howard Payne University, where he was named Outstanding Student in Accounting. He received a Master’s of Accountancy from Texas State University in 2002. Dan was licensed as a CPA in 2002. Dan joined the Firm in 1999 after two years as a staff accountant with Jerry Nelson in Tyler. He became a minority partner in 2005 and purchased the Firm outright in 2010.

Dan brings almost fourteen years’ experience in public accounting to the Firm. He serves as the Firm’s primary tax preparer and business consultant as well as our QuickBooks “guru”. Dan’s chief strength is the ability to take complex tax or accounting issues and translate them into plain English for the client.

Dan lives in San Marcos with his wife Laurie and two children, Andrew and Claire. In his spare time, he enjoys playing volleyball, watching the Spurs and Cowboys, and camping.


Lisa Obst


Lisa attended Stephen F Austin University and the University of Houston, where she studied business and accounting. She has 35+ years experience working in various public and governmental accounting positions. Her main career focus has been on accounting and bookkeeping for businesses of all sizes. Lisa joined DMCPA in December 2011 after spending four years with the San Marcos Public Housing Authority. Lisa wears many hats for the Firm. She is primarily responsible for bookkeeping and payroll services for our corporate clientele but also chips in on tax preparation as needed.

Lisa lives in San Marcos with her husband and two children, Lucas and Katie. In her spare time, Lisa enjoys watching her daughter participate in cheerleading and marching band, and traveling to bowling tournaments across the state and country.


Debbie Love

Office Manager

Debbie attended Sam Houston State University, where she studied general business. She received her Associates Degree in Science from Houston Community College. She has 15+ years of experience in office management. Debbie joined DMCPA in 2016, coming from another CPA firm. She is primarily responsible for running the front desk. Setting appointments and answering phones, while, helping out where she is needed.

Debbie lives in McMahan with her husband, two grown children, Katie and Shelby and her granddaughter McKenzie. In her spare time, she loves to hunt, go camping, ride her horse Blue, and spend time with her granddaughter.


Nancy Herrington


I am happy to have joined Dan and the staff at Dan Musick, CPA PLLC in January of 2017.

I graduated from the University of Texas at Austin in 1985 with a Bachelors of Business Administration in Management. While attending UT, I worked part time at Sears, Roebuck and Company at Barton Creek Mall and, after graduating, became a full-time sales manager. I managed several departments in my 15 years at Sears, including Men's and Children's fashions, Shoes, Hardware, Lawn and Garden, Sporting Goods, Paint and the seasonal toy department. I left Sears in 1998 to work at the hardest but most rewarding job that I have ever had - a stay at home mother.

From September of 2005 through December 2016, I worked part time with a small CPA firm in Kyle, TX. I worked as a receptionist, office manager, tax preparer and payroll specialist.

My husband, James, and I have been married since 1992 and have two daughters, Kathryn and Jennifer. Kathryn graduated from Texas Tech University in 2018. Jennifer is currently a student in the nursing program at Texas Tech University set to graduate in December 2019.