Biography
Siena M. Martinez is an Associate at Keystone Law Group, P.C., and assists with all matters of the firm, including litigated and uncontested cases. Siena worked as a law clerk at Keystone during her first year as a law student, which sparked her passion in trusts and estates. She loves helping her clients navigate some of the most difficult periods of their lives with hard work and compassion. During law school, Siena also discovered an interest in tax law. She worked for the USD Federal Tax Clinic, in which she won the 2023 Graduate Award for Outstanding Clinic Intern. After graduation, she went on to obtain her Tax LLM degree. Prior to rejoining Keystone, Siena worked at a boutique estate planning firm assisting clients plan for their future, and as a trusts and estates litigation associate in San Diego.

Siena Martinez
Associate
Email: smartinez@keystone-law.com
Biography
Siena M. Martinez is an Associate at Keystone Law Group, P.C., and assists with all matters of the firm, including litigated and uncontested cases. Siena worked as a law clerk at Keystone during her first year as a law student, which sparked her passion in trusts and estates. She loves helping her clients navigate some of the most difficult periods of their lives with hard work and compassion. During law school, Siena also discovered an interest in tax law. She worked for the USD Federal Tax Clinic, in which she won the 2023 Graduate Award for Outstanding Clinic Intern. After graduation, she went on to obtain her Tax LLM degree. Prior to rejoining Keystone, Siena worked at a boutique estate planning firm assisting clients plan for their future, and as a trusts and estates litigation associate in San Diego.
Education
Siena received her law degree and her Tax LLM degree from the University of San Diego.
Bar Admissions
- California
Memberships
- California Lawyers Association, Trusts & Estates and Litigation Sections
- Los Angeles County Bar Association, Trusts & Estates and Litigation Sections
- San Diego County Bar Association, Trusts and Estates Section
- Probate Attorneys of San Diego
- Young Tax Lawyers, California Lawyers Association
Interests
Siena enjoys hiking and going to the beach with her dog, Tulip, practicing pilates, reading, and spending time with friends and family.