Built by an athlete, for athletes.
Rugby captain, collegiate All-American, then a professional career and an athletic scholarship through chiropractic school. Peak is the clinic he'd have wanted as a player.

I know the frustration, because I had it.
I grew up an athlete. Rugby through high school at De La Salle, then all the way through Chico State as team captain and a collegiate All-American, and on through chiropractic school.
I found chiropractic as a patient, in a rugby club, when I needed it myself. I know the specific frustration of an injury standing between you and the thing you love, and of being told to just rest and wait.

I built Peak to be the opposite of that: a place that finds the real problem, fixes it with the best tools available, and gets you back to full speed.Dr. Charlie Brennan
How he got here.
No years attached to most of it, because only the graduation date is on the record and the rest would be guesswork.
- 01De La Salle High School, ConcordRugby, from the start.
- 02Chico StateBusiness Administration, while playing as team captain and earning collegiate All-American honours.
- 03Life West rugby clubIntroduced to chiropractic as a patient, which is still how he thinks about it.
- 04Life Chiropractic College WestAttended on an athletic scholarship. Graduated magna cum laude, summer 2019.
- 05USA Rugby development teamPlayed professionally and internationally while studying.
- 06Life West Sports Performance InstituteFounding member.
- 07AVP Volleyball · Nitro Circus World Games · Dew TourWorked with the medical teams, plus rugby sides along the way.
- 08SacramentoPeak, and a practice where UFC fighters and pro athletes across other sports come to stay in competition.
Two foundations, and everything that builds on them.
We combine precise chiropractic with the soft-tissue and technology work that actually resolves injuries: ART, Graston, focused and radial shockwave, Class IV laser, spinal decompression. Alongside it, functional medicine that gets to why you feel the way you do.
Chiropractic and functional medicine are the two foundations. On top of them we're building recovery, and increasingly regenerative and longevity care, so an active body can get everything it needs under one roof.
All in-house, alongside precise adjusting
Functional medicine is practised across the whole team.
Not one person's side offering, and not a room you get referred to. It's a capability every practitioner here brings, which is why it's one of the two foundations here.
You'll see the same standard whoever you're booked with.
Three people, and you'll meet all of them.
Small on purpose. You see the same faces at the desk, on the table, and on the way out.


Dr. Charlie Brennan
Charlie has always had a passion for all things health, wellness and performance, which carries over into both his work and everyday life. When he's not at Peak, you can usually find him working out, on the golf course, hunting, or finding any excuse to spend time outdoors.
Above all, he enjoys spending time with his wife, Iitza, family and friends, and his two dogs, Eli and Dexter. His active lifestyle and genuine interest in health, performance and longevity are a big part of what drives his approach to helping patients feel, move and perform their best.

Jennifer Volman
Jennifer brings a personalised, results-focused approach to every session. Whether she's helping patients recover from an injury, loosen up tight muscles, improve mobility or simply unwind, she tailors each massage to what the patient needs that day.
Outside the office she enjoys staying active, spending time with friends and family, and making the most of her time away from the treatment room. Her easygoing personality and passion for helping people feel their best make her an important part of the Peak team.

Renee Brady
Renee is the friendly face helping keep the office running smoothly and making sure patients feel right at home.
Outside the office she's a proud girl mom and her daughters' biggest cheerleader. She's all about family, loves spending time with the people closest to her, and when she gets the chance she's always down for a good time. Renee brings her fun, outgoing personality and genuine care for others into everything she does at Peak.
Come and get it looked at properly.
No referral needed. Book directly and get seen.
Ready to get back to your peak?
Questions before you book? Call or text — a real person will get back to you.
Clinic hours
- Monday
- 8:00–1:00, 3:00–6:00
- Tuesday
- 8:00–1:00, 3:00–6:00
- Wednesday
- 3:00–6:00
- Thursday
- 8:00–1:00, 3:00–6:00
- Friday
- 8:00–12:00
- Saturday
- Emergency visits only
- Sunday
- Closed