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Center for Elders’ Independence ACS Tri-Valley

This location is an Alternative Care Setting (ACS) for participants who receive PACE services at San Leandro or Concord PACE centers. They will visit their medical providers at those locations while attending a more local and convenient day center in their neighborhood.

ACS Tri Valley
2441 Constitution Drive, Livermore CA. 94551

Current Members: 925-505-4700

Become a Member: 844-319-1150

Hours: 8:00 AM to 5:00 PM

Monday through Friday

Visible from Interstate 580, ACS Tri-Valley opened in March 2024 to offer local seniors a place to enjoy lunch, work on their rehab exercises and build friendships in the very large center of 23,000 square feet of space.

This location features an arts & crafts room, a memory care room, a serving kitchen, two patios (inside and outside), and a fireplace along with an expansive senior rehab gym complete with a mock-up apartment for occupational therapy.


People You'll Meet at ACS Tri-Valley


Markus Lewis, RD

“The gratitude the participants express gives me the strength to come to work every day. They enrich me with their history, backgrounds and cultures and is my favorite part about working with elders.”

The gratitude the participants express gives me the strength to come to work every day. They enrich me with their history, backgrounds and cultures and is my favorite part about working with elders. PACE provides me with a unique environment to be creative with problem-solving skills to address the complex issues and barriers that seniors face on a regular basis.

I was raised on a Marine military base in San Diego and moved to Northern California in my mid-20s after studying abroad. I earned my Registered Dietitian’s license in 2020, a month after joining Center for Elders’ Independence. After PACE Concord opened, I stepped into a leadership role becoming the Day Center Supervisor. Now at Tri-Valley, I am thrilled to be the Center Manager.

I speak English and very limited Spanish.

For my time outside of work, my fiancé and I enjoy cooking all kinds of foods as we are both dietitians and big-time foodies. We also stay active by hiking the many trails here in the Bay Area and have fun with our two cats, Tonks and Diggory.

CEI provides PACE services to older adults who live in the following East Bay ZIP codes:

94501 City Of Alameda
94502 City Of Alameda
94505 Discovery Bay
94506 Danville/Blackhawk
94507 Alamo
94509 Antioch
94511 Bethel Island
94513 Brentwood
94514 Byron
94516 Canyon
94517 Clayton
94518 Concord
94519 Concord
94520 Concord (North)
94521 Concord
94522 Concord
94523 Pleasant Hill
94524 Concord (West)
94525 Crockett
94526 Danville
94527 Concord
94528 Diablo
94530 El Cerrito
94531 Antioch

94540 Hayward (Airport)
94541 Hayward (North)
94542 Hayward (South)
94544 Hayward (South)
94545 Hayward (South)
94546 Hayward/Castro Valley
94547 Hercules
94548 Knightsen
94549 Walnut Creek/Lafayette
94550 Livermore
94551 Livermore
94552 Hayward/Castro Valley
94553 Martinez
94556 Moraga
94561 Oakley
94563 Orinda
94564 Pinole
94565 Pittsburg
94566 Pleasanton
94568 Dublin
94569 Port Costa
94570 Moraga
94572 Rodeo
94575 Moraga

94577 San Leandro (Marina/DT)
94578 San Leandro (Chabot)
94579 San Leandro (South)
94580 San Lorenzo
94582 San Ramon
94583 San Ramon
94586 Sunol
94588 Pleasanton
94595 Rossmoor
94596 Walnut Creek
94597 Walnut Creek
94598 Walnut Creek
94601 Fruitvale, Seminary
94602 Dimond
94603 Elmhurst
94605 Seminary
94606 San Antonio
94607 West Oakland
94608 Emeryville
94609 Temescal
94610 Lake Merritt, Trestle Glen
94611 Piedmont, Montclair, Downtown
94612 Downtown
94613 Mills College

94618 Rockridge
94619 Millmont
94621 Eastmont
94625 Port of Oakland
94626 Oakland
94627 Oakland
94702 Southwest Berkeley
94703 Southwest Berkeley
94704 East Berkeley
94705 Upper Ashby
94706 Albany
94707 Albany, Berkeley
94708 North Berkeley, Kensington
94709 Grizzly Peak
94710 West Berkeley
94720 UC Berkeley
94801 Richmond
94802 Richmond
94803 Richmond, El Sobrante
94804 Richmond
94805 Richmond, San Pablo
94806 Richmond
94820 El Sobrante