PH: (619) 463-1707 OR (858) 565–1223 and (760) 634–1499

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Our Service Area

We work in the greater San Diego area. We serve all neighboring communities.


California State
Contractors License


Our Team

Jeff Bruhn

President, CEO
Certified Arborist WE-0712A

Jeff is founder of Atlas Tree Service (in 1982) and partnered  with Nick Cascio in 1989 to form Atlas Environmental Services Inc.  He has been a Certified Arborist since 1990 and became  a Certified Tree Care Safety Professional (CTSP) in 2009. In addition to managing and recruiting the growing talent of the Atlas team, Jeff continues to nurture business relationships with commercial property managers and owners.

Nick Cascio

Senior Vice President, CFO
VP of Operations
Certified Arborist WE-0715A

Nick started in tree care in 1977 after graduation from high school, under the guidance of his father, Nick of Cascio and Son Tree Service. He learned all aspects of the tree industry and in 1983 he became President and sole owner of Cascio Tree Service. Six years later he teamed with Jeff of Atlas Tree and formed Atlas Environmental Services. The two partners work together steering and growing the company.

Brian Coy

Commercial & HOA Account Representative
Certified Arborist WE-0807A

Brian has learned all aspects of the tree care industry since graduating from high school in 1978. He managed the field operations of Cascio and Son Tree Service before teaming up with Atlas Tree in 1989. He became a Certified Arborist in 1990 and was promoted to VP of operations. Brian brings 32 years of local hands-on tree care experience to his commercial and H.O.A. clients.

Ron Matranga

Residential and Light Commercial Account Representative
Board Certified Master Arborist WE-728B
Registered Consulting Arborist #488

Ron is a Board-Certified Master Arborist and a Registered Consulting Arborist. His primary role involves taking care of residential accounts and Consulting Arborist services for Atlas. He can answer your questions about trees and offer recommendations to help address tree concerns. He is one of the most respected arborists in San Diego County and as been with our team for 27 years.

John Hamilton

Municipality / Commercial Account Representative
Certified Arborist WE-1139A

John Hamilton served seven years for our Country in the United States Marine Corps before starting in the local San Diego tree industry in 1988. He worked his way into climbing and became a highly-skilled technical large-tree removal expert that is recognized throughout southern California. His effective management approach and people skills have enabled him to run numerous tree crews. John became a Certified Arborist (WC #1139) in 1995 and continues working with municipalities and commercial clients taking care of their tree concerns. At 6’ 5” and nearly 300lbs we call him "Big John."

Cindy Greschke

Secretary / Treasurer & Office Manager

Cindy is our Secretary Treasurer/Office Manager. She has been part of our team for the last 18 years. Cindy handles all aspects of customer service from helping customers schedule free estimates to accounts payable/receivable.

Monica Silva

Administrative Assistant

Monica is our Administrative Assistant, mulch program coordinator and phones back up to our receptionist. She handles insurance certificate requests and customer service surveys with her amazing work ethic. Monica has been sharing her administrative experience with our team since 2005.