John Ismerio, MBA

Founder & CEO

20 years of providing tax and accounting services.

John has been helping small businesses and non-profits to achieve their goals.


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Rose Ismerio, BA

General Manager

Managing partner and officers for ISTAXPro.

With her 13 years of experience, Rose devoted to help and engage with all business owners regardless the size.


Marco Ang

Junior Accountant

Marco assists broad scope of services from tax preparation to QuickBooks for Business.

His goal is to provide efficient and accurate services for ISTAXPro's clients


Flor Sanchez

Junior Accountant

10+ years experience in Credit Analyst field, Flor expands her horizon in tax and bookkeeping services.

Speaking fluent English and Spanish, Flor hopes to add values for local and national clients.


Robert Perez

Junior Accountant

With his strong customer service skill, Robert is providing quality tax preparation experience.

He contributes on updated tax research in order to give best tax planning for the clients.


Cecilia Zavala

Junior Accountant

As an accounting enthusiast, Cecilia combines her administration skill and experience to give best accounting services.

Cecilia also provides pleasant ideas to help all ISTAXPro accountants.


Christine Hernandez

Junior Accountant

In the next few years, she hopes to get her CPA license and to have a blossoming career in private accounting. 

 In her free time, she likes to go hiking, camping, driving by the coast or up the mountain to sightsee, kayaking, and snowboarding.

Hank Tu

Junior Accountant

Hank's professional and personal goal is to broaden his accounting skill set, improve his work quality, and most importantly learn from those who came before him. 

His hobbies include golfing, horology, and investing.


Ashley Hernandez

Junior Accountant

Ashley is passionate about her work. She thrives on challenges and constantly sets goals for herself, so she has something to strive toward.

 She recently began taking piano lessons and looks forward to her classes.