Meet the Staff

PenEq Team

Veterinarians



lameness expert

Russ Peterson, DVM, MS
I grew up in Santa Barbara and it may not come as any surprise that I became involved in sailing, both teaching & competing in open ocean racing.  
Learn more about Russ


equine dentistry

Sinead Devine, DVM
I was born in Drogheda, Ireland just 6,000 miles away from the Emerald Isle!   Summers spend on my Uncle's farm prompted my early love of animals and my decision to become a vet. 
Learn more about Sinead


ambulatory equine vet gilroy hollister

Bart Halsberghe, DVM
I was Born in Kortrijk, Belgium, where I spent most of my youth. It was at an early age that I was introduced into the world of horses. It soon became a passion, a passion I took over from my mother. I spent most of my weekends and vacations in the equestrian centre, where I started breaking and training horses for eventing
Learn more about Bart

equine internship

Vanessa Gant Bradley, DVM
I graduated from the UC Davis College of Veterinary Medicine, and have joined the PenEq team as a veterinary intern.
Learn more about Vanessa



equine emergency

Lauren Work, DVM
I grew up in Marin County before moving to Seattle to complete my undergraduate education. The constant Seattle rain was perfect for convincing my husband why California was a far better place to live.
Learn more about Lauren


equine emergency ambulatory

Sarah Currie, DVM
I went to vet school at Oklahoma State University and joined the Pen Eq team in July of ’07. I love living in northern California because it’s such a beautiful area and there are so many things to do here. Also, people here really enjoy their horses and take excellent care of them.
Learn more about Sarah

Veterinary and Hospital Staff



equine nurse

Jan Peterson
My Bio is coming soon!
Learn more about Jan



equine veterinary technician

Margaux Reitsma, Technician
Born in Michigan, I grew up in the Bay Area.   As a licensed CA Paramedic I worked in Solan Co., San Joaquin Co., Contra Costa Co. as a field medic for 10 years.   I've also been a veterinary tech for large and small animals over the past 20 years.
Learn more about Margaux


experienced technician

Judi Pheil, Technician
Born in San Francisco, I attended Lowell Highand City College receiving an AS in Medical Assisting.   For over 10 years I worked for 4 Orthopedic Surgeons in San Francisco but decided to move from human medicine to the horse world.
Learn more about Judi


equine surgery recovery

Juan Martinez, Maintenance
I was born in Jumiltepec Mexico and have 6 sisters and 3 brothers. I went to High School and studied electronics so I could fix televisions and radios. When I came to Peninsula Equine I began fixing things and now I'm helping fix things with four legs! 
Learn more about Juan


horse whisperer

Hector Martinez, Maintenance
Born in Jumiltepec Mexico, I have 6 sisters and 3 brothers (one is Juan who works here too.)   This past summer I was very happy to get my Visa so I could come to work in California with my brother.   I am working hard to h'abla Ingles... learn English.
Learn more about Hector


equine transport bay area

Careena Laney, Technician
Born in San Jose, CA. I have been obsessed with horses since I was a little girl. I talked my mom into putting me in riding lessons at Garrod Farm's at a very young age. Since then I have been trying to save every horse in the world one at a time.
Learn more about Careena


peninsula equine 3 day eventing

Lindsay Connors, Technician
My Bio is coming soon!
Learn more about Lindsay



peninsula equine veterinary technician

Andrea Hines, Technician
My Bio is coming soon!
Learn more about Andrea



peninsula equine volunteer experience

Ali Massei, Technician
My Bio is coming soon!
Learn more about Ali



peninsula equine volunteer experience

Randi Frankle, Assistant
Randi fell in love with horses after her first riding lesson at age 11 and has been passionate about them ever since. After practicing law for several years, Randi decided to change careers and follow her passion.
Learn more about Randi

Office Staff



equine front office

Amanda Maffei, Office Administrator
Born and raised just 15 miles north of Portola Valley...loved the area and didn't want to leave.   While going to college I became a working student for Flying Tails Farms at the Portola Valley Training Center.
Learn more about Amanda


make appointment equine ambulatory

Marion Prieto, Office Administrator
Born in San Francisco, went to University of Southern California where I studied dentistry. I have raised two wonderful daughters Jill & Claire who were actively involved in show jumping & equitation.
Learn more about Marion


make appointment equine ambulatory

Lien Roobroeck, Office Administrator
I grew up in Ingelmunster, a small town in Belgium. I started riding horses in that same town when I was 11 years. There, I met my husband Bart and followed him to the United States.
Learn more about Lien