Michael P. Upshaw

Of Counsel

Michael P. Upshaw (Of Counsel to the Firm) was admitted to practice law in the State of Arizona and the United States District Court for the District of Arizona in 1983. He has also been admitted to practice before the United States Court of Appeals for the Ninth Circuit and the United States Supreme Court. Since that time Mr. Upshaw has been in private practice representing various clients in construction law, Federal Indian Law and civil litigation matters. Mr. Upshaw was the Attorney General of the Navajo Nation for approximately two years overseeing a staff of more than twenty attorneys engaged in providing governmental legal services. Mr. Upshaw has also acted in capacities of General Counsel and Special Counsel to other Indian Nations in Arizona in the areas of government services, federal land exchanges, economic development and gaming matters.

Practice Areas


Administrative Law

Construction Law

Gaming Law


Government Contracts

Litigation & Appeals


Indian Law

Personal Injury

Civil Litigation Matters

Bar Admissions


Arizona, 1983


U.S. District Court District of Arizona, 1983


U.S. Court of Appeals 9th Circuit, 1984


U.S. Supreme Court


Arizona State University

J.D., Arizona State University College of Law, Tempe, AZ

Arizona State University

B.S., Arizona State University, Tempe, AZ

Contact Our Team

(480) 994-2000

(480) 994-2008

Margrave Celmins P.C.

8171 E. Indian Bend Road Suite 101
Scottsdale, AZ 85250




Effective January 6, 2020, attorneys Michael W. Margrave, Michael L. Kitchen, and Patrick J. Van Zanen, as well as paralegals Brittany Crane and Mallory Rasmussen, will join Sacks Tierney P A at their office located at 4250 N. Drinkwater Boulevard, Scottsdale, AZ  85251. Their new contact information is:

Michael W. Margrave    
direct line: 480-425-2606
fax: 480-425-4906

Michael L. Kitchen
direct line: 480-425-2619
fax: 480-425-4919

Patrick J. Van Zanen    
direct line: 480-425-2623
fax: 480-425-4923

Brittany Crane
direct line: 480-425-2627
fax: 480-425-4927

Mallory Rasmussen
direct line: 480-425-2629
fax: 480-425-4929

We hope to continue serving your needs at our new home with Sacks Tierney P.A. beginning January 6, 2020