Meet Our Team

Mt Diablo Tax Pros is a full-service Tax & Financial Advisory firm licensed in CA. All our tax and investment planning professionals hold valid CA State Certificates and Designations.

Meet Our Staff:


Jeffrey J. Rondini, MBA, EA, admitted to practice before the IRS

Jeff has over 23 years servicing the East Bay as an Enrolled Agent (EA) and Senior Tax Advisor. He holds additional certifications in Small Business/Sole Proprietors, Investment Income, Retirement and Military returns. Jeff specializes in Real Estate Investment, Home Ownership/Foreclosures, Self-Employment, Investments/Stock Options, Retirement Planning, Trusts & Estates, Partnerships, Corporations and Not-For-Profits. He grew up in Cleveland, OH and is an avid pro and college sports fan. His hobbies include technology, woodworking, travel and family. Jeff earned a BS in Chemical Engineering at Purdue University and an MBA (Finance) at Northwestern University. He's married with three children.


Margaret M Rondini

Meg began a new career as a tax professional two years ago and we welcome her to the team! She completed the Pronto Tax School Basic Income Tax course in 2017 and has served as our client service contact since then. In addition to her tax office duties, Meg serves as an Instructional Assistant with Wren Elementary School in Concord. She grew up in Naperville, IL, attended Purdue University, and is the proud mom of four children. She enjoys cooking, traveling and gardening.



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