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About me

Mentis Law, PLC, is a law firm with a conscience. That culture begins with attorney Diane Mancinelli, and extends to office manager Tony Mendoza and the firm’s paralegal Yasmine Lepe. Diane and Tony seek caring, committed employees who want to be of service to clients.
Under Diane and Tony’s guidance, the office has systems in place not only to keep the office running smoothly but also to ensure that clients are well-served. Diane’s policy is to respond to her clients in under 24 hours. Checking her email at night or making sure that clients get all of the information they need is all part of the service the office provides.


Languages spoken: Spanish, Farsi, English

Contact info

Mentis Law Group, PLC

14751 Plaza Drive
Suite J
Tustin, CA, 92780

Practice areas


  1. Employment: 25%
    33 years
  2. Chapter 7: 25%
    28 years
  3. Personal Injury: 20%
    33 years
  4. Business: 15%
    33 years
  5. Chapter 13: 15%
    10 years


Payment types:

Cash, Check, Credit card

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MINot authorized to practice-Administrative198305/14/2016
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Best Oralist-Jessup International Moot Court CompetitionMoot Court1982
Top of Class in Criminal LawAmerican Jurisprudence1980
Work experience
TitleCompany nameDuration
Managing PartnerMentis Law Group, PLC1992 - Present
Association namePosition nameDuration
Orange County Bankruptcy ForumMember1999 - Present
Orange County Bar AssociationMember1983 - Present
California Bar AssociationMember1982 - Present
Legal cases
Case nameOutcome
Wage Hour SettlementDiane was able to quickly settle out of court obtaining $45,000 for her client.
Boy Badly InjuriedDiane settled the case for $1,940,000 over the boy life-time
See all legal cases 
Publication nameTitleDate
Main Street Business & VentureThe Employers Documentation Requirements When Hiring an Employee1994
School nameMajorDegreeGraduated
University of San Diego School of LawLawJD - Juris Doctor1982
Hope CollegePolitical ScienceOther - Bachelors1979
Speaking engagements
Conference nameTitleDate
Running a Medical Practice CourseIssues for the Medical Practice with Wage Hour Litigation2014
Medicare Builders Society of Health Insurance Agents SeminarCorporations, the Little Know Way to Continue Renewal Premiums after the Death of the Insurance Agent2013
Orange County Dental Society Monthly MeetingWage & Hour Issues Affecting the Dental Practice2012
Entrepreneur ForumProtecting Yourself with Contracts2012
American Society of Women Accountants Orange County Chapter SeminarBasic Bankruptcy and the Accountant’s Role2012