SAGE Team

SAGE Team

Leadership Team

Gina Del Vecchio

Gina Del Vecchio

Chief Executive Officer

Gina Del Vecchio has a penchant for leading companies that enhance our sense of delight, quality of life and well-being. She has served in leadership roles at companies that include Gymboree, where she focused on enhancing customer service, and at Ariat, where she oversaw supply chain operations for high-quality equine and riding products. She charted a new course as Chief Operating Officer for Lifefactory, a company that uses sustainable materials to create consumer goods, and followed this experience with executive roles at innovative Bay Area lifestyle brands.

Gina brings her passion for animals to SAGE Centers, and she has a deep interest in employee and client engagement and mentorship. A graduate of the Sustainable Business MBA Program at Green Mountain College, Gina is a growth strategist who excels at finding a competitive advantage and discovering untapped potential in people, processes and organizations.

In her free time Gina volunteers with rescue organizations and champions spay and neuter programs in the Bay Area. She shares her home with three rescue Chihuahuas, two cats and a white dwarf hamster.

Wendi Velando Rankin, DVM, MS, DACVIM (Oncology)

Wendi Velando Rankin, DVM, MS, DACVIM (Oncology)

Chief Medical Officer

Background and Education:
Veterinary School: University of California, Davis
Internship Training: University of Missouri-Columbia
Residency Training: University of Missouri-Columbia
Certification: Diplomate ACVIM (Oncology) (2008)

Dr. Wendi Rankin is a graduate of UC Davis, where she earned a Bachelor of Science in Veterinary Science (2002) and her Doctor of Veterinary Medicine (2004). She completed her Master of Science degree in Veterinary Biomedical Sciences (2008) for researching a protein in canine bladder tumors at the University of Missouri-Columbia. Dr. Rankin also completed a small animal medicine and surgery internship and oncology residency at the University of Missouri-Columbia (2008). She was board-certified in Medical Oncology in 2008 and joined SAGE that year. She has published several research articles on canine bladder tumors, as well as a chapter on drug interactions in a veterinary oncology textbook.

Dr. Rankin enjoys many aspects of oncology, and has a special interest in electrochemotherapy to treat various tumor types (including sarcomas, melanomas, mast cell tumors, oral tumors, and more). She was the first oncologist to use electrochemotherapy for veterinary patients in California and has been doing so since 2013. While she is very interested in the science of Oncology, above all, Dr. Rankin’s favorite aspect of oncology is being able to give treatment options so clients feel comfortable with their treatment decisions to improve and maintain their pet’s quality of life.

Julie Smith DVM, DACVS, CCRT, MBA

Julie Smith DVM, DACVS, CCRT, MBA

Chief Strategy Officer

A highly respected member of the veterinary community, Julie works directly with SAGE Partners and the executive and leadership teams to chart the course of growth across our state-of-the-art veterinary hospitals.

Julie started as an Associate Surgeon for VSA in August 1997. Through the years, she was instrumental in the direction and growth of the organization to include the merger of the practices formerly known as VSA (Veterinary Surgical Associates), VMS (Veterinary Medical Specialists) and TVAEC (Tri-Valley Animal Emergency Center) to become the single organization known today as SAGE Veterinary Centers.

Julie became a Managing Partner for SAGE Veterinary Centers in 2010. She served as our Medical Director from 2013 to 2018. In her role as Medical Director and board certified Surgeon, Dr. Smith led by example in setting the standards for a high level of veterinary medicine. She was responsible for recruiting and hiring highly skilled veterinary specialists to join the SAGE team and has always been an advocate for continual learning and training opportunities. Internally, she oversees the mentoring program within SAGE to support new doctors and externally, she leads and organizes the annual SAGE Symposium, the largest private continuing education event in the Bay Area to support more than 700 primary veterinarians and their staff.

Dr. Smith works with national veterinary groups to stay connected with the veterinary industry as a whole. She is the Treasurer for the American College of Veterinary Surgeons (ACVS), and Past President of the Veterinary Specialist Awareness and Outreach Project (VetSOAP). For more information regarding her extensive medical and educational background, please see below.

When Julie is not busy with work, she is either traveling the world, learning more about California wine appellations, playing soccer with the “Grasshoppers” on the Bay Area Women’s Soccer League or serving on the Leadership Council for the Positive Coaching Alliance!

Background and Education:
Veterinary School: University of California, Davis
Internship Training: North Carolina State University
Residency Training: University of Georgia
Certification: Diplomate ACVS (1997)

Dr. Julie Smith is a graduate of UC Berkeley where she completed her undergraduate studies and veterinary school (1992). Following veterinary school, Dr. Smith completed an internship at North Carolina State University, and a residency in small animal surgery at the University of Georgia. Dr. Smith also served as an Assistant Professor of small animal surgery at Kansas State University before joining SAGE in 1997. She became a board certified surgeon in 1997.

Dr. Smith’s passion for professional development spurred her to become certified by the Canine Rehabilitation Institute (2008) and earn her MBA at St. Mary’s College (2013). Dr. Smith has taken a very active role in the management of SAGE Veterinary Centers since 2002, and served as SAGE’s Medical Director from 2013 to 2018. In 2018 she stepped into a new role as Chief Strategy Officer to help chart the future course of our state-of-the-art hospitals.

On the business side, Dr. Smith’s extensive background in all aspects of veterinary medicine allows her to bring a unique perspective to the role of Medical Director in helping to guide the continuing growth of SAGE. Dr. Smith also works with national veterinary groups to stay connected with the veterinary industry as a whole. She is the Treasurer for the American College of Veterinary Surgeons (ACVS), and Past President of the Veterinary Specialist Awareness and Outreach Project (VetSOAP).

On the clinical side, Dr. Smith particularly enjoys the challenges of endocrine surgery (adrenal tumor removal, pancreatic tumor removal, etc.), as well as urinary tract and liver shunt surgeries. She is also extremely passionate about pain management, osteoarthritis, and the positive effect that weight management, exercise, and physical rehabilitation can have on the health and well-being of small animals.

Lisa Thompson

Lisa Thompson

Chief People Officer

Lisa Thompson oversees People and Culture at SAGE and works across the organization to guide the strategy and direction of employee experience, learning and development, and talent management.

Lisa is a Bay Area native—she grew up in Palo Alto and attended high school in San Jose.

She attended Mills College in Oakland, earning her BA in Psychology.

Following graduation from Mills, Lisa moved to the Midwest, where she earned her Masters and Ph.D. in Psychology at the University of Kansas and explored a lifelong interest in teaching, coaching and mentoring. She thrived in academia for several years and worked as a researcher and teacher at KU and at The Ohio State University. When it was time for a change, she returned to the Bay Area, worked as a research psychologist for a dot com for a short period and then moved to Mammoth Lakes, California. Lisa landed a job with Mammoth Mountain Resorts and led their HR department for 9 years.

In 2013, after five years of California’s historic drought that took a toll on the ski industry, she and her husband decided to move with their two young sons back to the Bay Area.
Lisa took a job with the San Francisco 49ers and spent 5 years in the high energy sports world where she rebuilt the 49ers HR department, helped open Levi Stadium, and much more.

Now at SAGE, Lisa is enjoying being part of an organization that cares for pets and their people.
She has three cats and three dogs. In her free time, Lisa enjoys spending time with her husband, Marc, and two sons Nathan and Liam, whether they’re out in nature, catching a movie or eating sushi.

Brooks Marshall

Brooks Marshall

Chief Development Officer

Brooks Marshall specializes in leading organizational transformation through partnerships and acquisitions that benefit industries, companies, and the community at large. His experience is diverse, spanning corporate development, and corporate and investment banking and finance. Brooks has served in leadership roles in human healthcare organizations that include U.S. HealthWorks, where he oversaw expansion at a critical time in the company’s history. He also led acquisition processes at InSight Health Corp., a company that provides diagnostic imaging services to patients in clinical and hospital settings, and his vision led to a more expansive market strategy and growth initiatives.

At SAGE, Brooks is focused on the next phase of growth for our network of hospitals. He is committed to seeking partnerships in veterinary medicine with like-minded organizations that value a doctor-led, medicine first approach. And, he has a deep respect for the people and the culture of all organizations and extensive experience in preserving the legacy of unique practices.

In his free time, Brooks enjoys hiking and exploring the wild with his wife Kami, children Otis and Schuyler, and French Bulldog Pirate. He also enjoys traveling and abstract photography.

Karena Smith

Karena Smith

Vice President, Marketing & Strategic Partnerships

Karena Smith has managed the marketing, advertising, and business development strategies for SAGE Veterinary Centers since June 2016, to include brand positioning and brand awareness. Karena ensures our referring primary DVM relationships are developed and nurtured, and she works closely with the SAGE Management team on internal and external initiatives.

Before moving into her current role, Karena was the East Bay Regional Hospital Manager overseeing both SAGE Concord and Dublin operations. She started with SAGE in January 2013 as the Hospital Manager for SAGE Dublin.

Prior to coming to SAGE, Karena worked for the U.S. Army then spent close to 20 years in mortgage banking. She left the industry as a Vice President of Global Operations, overseeing the offshore loan processing and underwriting in various locations in India while managing the U.S. operations and sales force. She always wanted to work with animals and eventually transferred her management skills– first by owning her own equestrian business, then by managing the west coast territory for a medical device company when SAGE Centers became one of her clients.

Karena received her BA Degree in Liberal Arts with emphasis on Economics and Speech from the University of Hawaii at Manoa. She has also received professional certifications in national mortgage lending and with PATH (Professional Association of Therapeutic Horsemanship). She has served on the Board of Directors for various therapeutic riding organizations, using horses as a modality for disabled children and adults.

Born and raised in Manila, Philippines, she was a military brat who moved all over the world every 5 years then did the same in her career before settling in the Bay area in 2010. She enjoys traveling with her husband Doug and is the proud mother of her daughter Chelsea, a German shepherd cross rescue “Riley”, and a cat rescue “Happy”. She is looking for her next horse partner and when she can, she competes in Dressage, Jumpers and Eventing, and is an avid sports fan!

Medical Directors

Diane Roberts DVM, DACVIM

Diane Roberts DVM, DACVIM

Specialty Medical Director, SAGE Redwood City

Background and Education:
Veterinary School: University of Georgia
Internship Training: University of Georgia
Residency Training: University of Georgia
Certification: Diplomate ACVIM (2000)

Dr. Diane Roberts is a graduate of the University of Virginia, where she earned a BA in English literature and minored in both biology and religious studies. During her senior year in college, Dr. Roberts realized that her true passion was veterinary medicine and spent a post-grad year at Colorado State University in order to satisfy her vet school prerequisites. She then received her DVM from the University of Georgia’s School of Veterinary Medicine (1996). Dr. Roberts stayed at UGA to complete a small animal internship and an internal medicine residency. She became board certified in internal medicine in 2000 and joined SAGE as a partner in 2002.

Dr. Roberts likes all aspects of internal medicine, but particularly enjoys the challenges of airway conditions, liver and gastrointestinal diseases, and urinary issues. She specializes in interventional procedures that include urethral stenting, laser ablation of urinary tumors, and bladder and kidney stone removal. She also specializes in diagnosing airway diseases and treating these issues through tracheal stenting.

When not practicing, Diane enjoys the great outdoors: hiking, skiing, running, and hanging out on the beach with her dog Sundance, a yellow lab. Sundance spends many a day in the Critical Care Unit keeping morale high. Diane has been known to enjoy an occasional glass of fine wine, surely a nod to her days working in a high-end wine store during her later college years. Dr. Roberts was drawn to veterinary medicine by her positive experience with her own pets growing up: a sheltie and a black cat who provided unconditional love and support.

Emily Hanwell, DVM

Emily Hanwell, DVM

Specialty Medical Director, SAGE Redwood City

Background and Education:
Veterinary School: Ross University
Internship Training: Animal Medical Center, New York

Dr. Emily Hanwell received her BS in International Business from the College of Charleston (2001) and her Doctor of Veterinary Medicine degree from Ross University School of Veterinary Medicine (2011). She completed her 4th year clinical rotations at Texas A&M University (2011). After veterinary school, she completed a small animal medicine and surgery internship at the Animal Medical Center in New York, New York (2012).

Prior to her career in veterinary medicine, Dr. Hanwell worked in purchasing for a local government entity in Charleston, South Carolina and then for an investing company in Boston, Massachusetts. Her decision to change careers was based on her love for working with both people and animals. She especially enjoys emergency medicine due to the challenging and diverse nature of the cases. She has a particular interest in cardiology and toxicology-related emergencies.

When not at the hospital, Dr. Hanwell enjoys traveling, learning new languages, gardening, and spending time outside with her husband and two children. Dr. Hanwell is the proud owner of a mixed-breed, island dog by the name of Bryn.

Michael Kiselow, DVM, DACVIM (Oncology)

Michael Kiselow, DVM, DACVIM (Oncology)

Specialty Medical Director, SAGE Redwood City

Background and Education:
Veterinary School: Cornell University
Internship Training: Garden State Veterinary Specialists, New Jersey
Residency Training: Cornell University
Certification: Diplomate ACVIM (Oncology) (2008)

Dr. Kiselow is a graduate of Rutgers University in New Jersey, where he earned a BS in Animal Science/Pre-Veterinary Medicine. Mike received his DVM from Cornell University in 2004, and subsequently completed a rotating internship in small animal medicine and surgery at Garden State Veterinary Specialists. Mike then returned to Cornell to complete his medical oncology residency, and became board certified in Internal Medicine (Oncology) in 2008. He joined SAGE Centers that year.

Dr. Kiselow enjoys collaborating with other SAGE specialists in order to provide comprehensive, multidisciplinary treatment for patients with complex diseases. When not practicing, Mike enjoys many activities including hiking, triathlon, snowboarding, yoga, cooking, and live music. Dr. Kiselow’s passion for veterinary medicine also includes volunteer work: while in veterinary school, he traveled to multiple locations in the U.S. and Central America with Rural Area Veterinary Services (RAVS), providing medical attention to pets in underprivileged communities.

Elizabeth Kollar, DVM

Elizabeth Kollar, DVM

ER/CCU Medical Director, SAGE Campbell

Background and Education:
Veterinary School: University of California, Davis
Internship Training: San Francisco Veterinary Specialists

Dr. Elizabeth (Beth) Kollar is a graduate of UC Davis, where she earned a BS in Neurobiology, Physiology and Behavior. She received her DVM from UC Davis as well in 2005. Following veterinary school, she completed a small animal rotating internship at San Francisco Veterinary Specialists (2006). Dr. Kollar came to SAGE from the University of Pittsburgh, where she was a post-doctoral fellow at the McGowan Institute of Regenerative Medicine. Prior to the University of Pittsburgh, Dr. Kollar was an emergency clinician at Greenback, VCA Brookline, and North Shore Animal Hospitals.
Dr. Kollar particularly enjoys the challenges of emergency medicine and surgery. When not practicing, Beth enjoys spending time with her husband and daughter doing outdoor activities like hiking or biking. They also travel around the world for scuba diving vacations and bike trips. She is the proud owner of two dogs, Merlin and Bodhi, and a cat, Princess Buttercup. Beth was drawn to veterinary medicine by both her interest in science and love of animals.

Andrew Waxman DVM, DACVIM (Cardiology)

Andrew Waxman DVM, DACVIM (Cardiology)

Medical Director, SAGE Dublin

Background and Education:
Veterinary School: Iowa State University
Internship Training: Cornell University
Residency Training: Cornell University
Certification: Diplomate ACVIM (Cardiology) (2011)

Dr. Andrew Waxman attended Cornell University, where he majored in policy analysis and management and found his calling to veterinary medicine after graduating. He received his DVM from Iowa State University’s School of Veterinary Medicine (2007). Dr. Waxman then returned to Cornell University and completed a small animal medicine and surgery internship, and then continued on to complete a residency in cardiology. Dr. Waxman became a board certified cardiologist in 2011.

Dr. Waxman particularly enjoys the challenges of diagnosing and treating structural heart disease (heart muscle or valves), irregular heart rhythms, and congenital heart disease. He has exceptional skill in performing minimally invasive cardiac procedures such as pacemaker implantation or opening narrowed heart valves. While cats and dogs are the norm, he has been known to treat an occasional goat, rabbit, hedgehog, or ferret when one demands his expertise. When not practicing, Andrew enjoys spending time with his wife and young daughter.

Gerardo Martin del Campo DVM

Gerardo Martin del Campo DVM

Medical Director, SAGE Concord

Background and Education:
Veterinary School: University of California, Davis
Internship Training: Veterinary Specialty Hospital; San Diego, CA
Dr. Gerardo Martin del Campo received a B.S. in Animal Science from UC Davis in 1996, and continued at Davis for veterinary school, receiving his DVM in 2000. After finishing vet school, Dr. Martin del Campo completed a rotating small animal internship in medicine, surgery, neurology, and emergency at Veterinary Specialty Hospital of San Diego. He has worked as an emergency clinician in the Bay Area since 2001. Dr. Martin del Campo enjoys the unpredictability and variety of emergency medicine, and the challenges those things provide.

When he’s not in the hospital, his interests include spending time with my wife and son, fishing, and golfing. He’s the proud owner of: Fenway, an 8-year-old Boston terrier, Wolfie, a 2-year-old miniature schnauzer mix, and Cherry, a 5-month-old Chihuahua. All three dogs were rescues he encountered while working.

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