DeConcini McDonald Yetwin

DeConcini McDonald Yetwin

DeConcini McDonald Yetwin & Lacy. P.C. has provided quality representation to its clients throughout the State of Arizona and beyond for over four decades.

Firm Overview

Since its Tucson founding in 1968, DeConcini McDonald Yetwin & Lacy, P.C. has evolved into one of Southern Arizona's largest full-service, multidisciplinary law firms. A second office in the Phoenix metropolitan area expands accessibility to firm services throughout Arizona's central corridor.

Our attorneys have the knowledge and experience to solve a wide range of complex legal issues for individual, business and governmental clients. We hire lawyers and staff with demonstrated records of academic and professional excellence and maintain a professional culture that retains the best in the field: most senior shareholders at DMYL have been with the firm for more than 20 years.

This longevity distributed across the breadth of our practice areas enables DMYL to provide unsurpassed legal services. By matching attorneys and staff to clients based on knowledge, skill and experience, we can deliver quality legal services at a reasonable cost. And because we can leverage the combined competence of attorneys and staff from different areas of practice areas that often overlap domains of legal expertise we offer problem-solving on par with the most highly regarded legal firms in the country.

Main Office

Main Office
2525 East Broadway Boulevard, Suite 200
Tucson AZ 85716



Estate Planning

The Firm is involved in all stages of estate planning, including the preparation of wills, testamentary trusts, revocable and irrevocable trusts, long-term care qualifying trusts and insurance trusts.

We counsel clients on estates and gift planning in an effort to minimize tax liability. We also represent clients in trust and probate matters, and in all probate proceedings, including will contests, intestacy proceedings, conservatorships and guardianships.

Areas of Expertise
-Contested Estates and Trusts
-Decedents' Estates
-Estate Administration
-Estate Planning
-Family Trust
-Fiduciary Law
-Financial Planning
-Guardian Ad Litem
-Guardianship Administration
-Incompetency Proceedings
-Living Trusts
-Mental Health Law
-Powers of Attorney
-Retirement Planning
-Trust Administration
-Trust Law

John H. Barron III

DeConcini McDonald Yetwin

JOHN H. BARRON III is a member of Barron & Associates, P.C., Of Counsel to DeConcini McDonald Yetwin & Lacy, PC in the Phoenix office. John received his B.A. and J.D. degrees from the University of Arizona, and is admitted to the State Bar of Arizona and the United States District Court for the District of Arizona, as well as the State Bar of Georgia. John has served as co-chair and secretary for the Mental Health and Elder Law Section of the State Bar of Arizona. He is an associate editor of the 2000 Probate Code Practice Manual (4th ed.).

While practicing in Tucson, Mr. Barron was a special deputy Pima County attorney handling mental health litigation for Pima, Pinal, Yuma, and La Paz counties. Subsequently, Mr. Barron served as a deputy Maricopa County attorney representing the Maricopa County Medical Center Psychiatric Annex with respect to civil commitments and, later, representing the Maricopa County Public Fiduciary in the administration and litigation of estate, guardianship, conservatorship and mental health matters.

Subsequent to his return to private practice in 1997, Mr. Barron has established himself as a litigator of matters relating to estates, trusts, guardianships, conservatorships, exploitation and/or abuse of vulnerable or incapacitated adults, and eligibility of continued services for persons entitled to mental health and developmental disability related assistance.

In addition to the specific practice of law, Mr. Barron has also been a presenter and keynote speaker at seminars related to probate and mental health law, in-service training programs related to probate, guardianship and mental health law for medical personnel, and was the Instructor for the Arizona Supreme Court Fiduciary Training Program, Decision Making module.

Practice Areas:
-Matters involving Breach of Fiduciary Duty
-Guardianship and Conservatorship
-Trusts and Decedent's Estate Litigation
-Cases involving Elder Abuse;
-Exploitation of Vulnerable Adults;
-Mental Health Law and advocacy of the Seriously Mentally Ill (SMI);
-Litigation for, and Advocacy of, the Developmentally Disabled