A Tucson family business that grew one neighbor at a time
Rosa Villanueva started Sagebrook at her dining table in 2011. Today our bilingual team still works the same way: patiently and in person.



Why we started Sagebrook
When Rosa's parents turned 65 in Nogales, the mailbox filled with glossy brochures and the phone rang with sales calls. Nobody sat down and explained how it all fit together, in Spanish, without pressure. So Rosa, then a benefits manager at a Tucson hospital, did it herself.
Word spread through church, the neighborhood and her parents' friends. By 2011 she had a license, a desk on East Broadway and a waiting list. The name comes from the sagebrush and brook near her grandparents' ranch: something humble, steady and green in dry country.
Today we are a team of nine, with offices in Tucson and Green Valley, serving more than 6,400 clients across Pima and Cochise counties. We still make kitchen-table visits, still answer our own phones, and still call every client before Annual Enrollment starts.
What we promise every client
Four promises we put in writing and review with every new team member.
Kindness before paperwork
We slow down, explain twice if needed, and never rush a decision. Medicare is personal.
Independent and honest
We compare plans from several companies and tell you when the best choice is to stay put.
Your language, your pace
Bilingual advisors, large-print materials and TTY support for every client.
Here every fall
Your advisor reviews your plan each year, so you are never on your own after enrolling.
Meet your advisors
Licensed, local and easy to reach. Most of us have lived in Southern Arizona for decades.

Rosa Villanueva
Founder and senior advisor
Licensed since 2009. Started Sagebrook after helping her own parents through Medicare in Nogales.
English, Español

Mei Lin Harper
Part D and pharmacy specialist
A former pharmacy technician who reads formularies for fun and finds savings most people miss.
English, Mandarin

Danielle Okafor
Client care manager
Keeps every follow-up on schedule and helps clients with claims, ID cards and billing questions.
English

Marcus Bell
Medigap and retirement advisor
Spent 14 years in employee benefits and now helps people leave employer plans on the right date.
English

Tomás Aguirre
Bilingual advisor, Green Valley
Runs our Green Valley office and our Spanish-language seminars at the Joyner-Green Valley Library.
English, Español

Walt Brennan
Veterans and TRICARE advisor
Retired Army, 22 years. Helps Fort Huachuca families coordinate Medicare, VA and TRICARE for Life.
English
Licensed, trained and accountable
- Licensed insurance agency, Arizona Department of Insurance and Financial Institutions (demo license #0000000)
- All advisors complete annual AHIP Medicare training and carrier certifications
- Certified to help with Extra Help and Medicare Savings Program applications
- Member, Tucson Metro Chamber and Pima Council on Aging community partner (sample)
- Background-checked advisors and HIPAA-trained staff
- Years serving Tucson
- 15
- Clients enrolled
- 6,400+
- Average rating
- 4.9
- Client retention
- 94%
Come say hello
Stop by our East Broadway office, or ask us to visit you. Coffee is always on.