Team Member Carousel
Dr. Ellen Marsh
Medical director
Marcus Hale
Head of nursing
Dr. Grace Liu
Surgery
Teresa Lindqvist
Practice manager
Sofia Reyes
Veterinary technician
Dr. Hannah Cole
Cats and dentistry
See it built,
step by step.
Twenty-six people, two clinic cats and a front desk that remembers your dog’s name.
Dr. Ellen Marsh
Owner and medical director
Bought the practice from Dr. Brandt in 2014. Still sees patients three days a week and does most of the senior-dog consults.
Dr. Walter Brandt
Founder, semi-retired
Opened Hollow Oak in a former dentist’s office in 1998. Comes in on Tuesdays and refuses to retire properly.
Teresa Lindqvist
Practice manager
Schedules, staffing, the budget and every complaint that gets past the front desk. Twenty-two years here.
Marcus Hale, LVT
Head of nursing
Runs the treatment room and trains every new technician. Licensed in 2009, here since 2012.
Five vets. Ask for the same one every time.
Dr. Ellen Marsh
Internal medicine, senior pets
UW–Madison, 1996. The one to see about a dog who has slowed down, a cat drinking a lot of water, or a long list of medicines.
Dr. Grace Liu
Soft-tissue surgery
Spays, neuters, lumps and everything in between, about 600 surgeries a year. Calls every owner herself after the operation.
Dr. Hannah Cole
Cats and dentistry
Runs our cat-only Wednesday mornings, with a quiet waiting room and no dogs in the building until noon.
Dr. Tasha Greene
Dermatology, allergies
Itchy dogs, ear infections that keep coming back, food trials. Bring photos of the bad days, they help.
Dr. Owen Pruitt
Farm calls, goats and backyard flocks
Out on the road Tuesdays and Fridays within 40 miles. Grew up on a dairy farm in Mount Horeb.
The people holding the leash.
Marcus Hale, LVT
Head of nursing
Anesthesia and pain management. Can calm a 90-pound Rottweiler with a cheese stick.
Sofia Reyes, LVT
Surgery technician
Ten years with Dr. Liu in the operating room. Knits the cones we send home with cats.
Dana Kim, LVT
Dental technician
Cleans about fifteen sets of teeth a week and will show you the before and after.
Katie Brennan, LVT
Lab and imaging
Runs the in-house lab, so most blood results come back before you leave the building.
Rachel Ortiz
Veterinary assistant
Small dogs, nervous dogs and every puppy’s first visit. Studying for her license this spring.
The first voice on the phone.
Amy Kowalski
Front desk lead
Check-in, check-out and the waiting room. Keeps a jar of treats and a list of which dogs may not have them.
Lori Brandt
Phone triage
Answers the medical calls and decides who needs to come in today. Yes, she is Walt’s daughter.
Gabriela Núñez
Appointments
Books the vets, the surgery days and Dr. Pruitt’s farm route. Bilingual, English and Spanish.
Daniel Ferreira
Billing and insurance
Estimates, payment plans and pet insurance claims. Sends the claim form for you if you ask.
Nadia Haddad
Pharmacy and refills
Prescription refills, food orders and the reminder texts you get before a vaccine is due.
Open every night of the year, holidays too.
Dr. Nate Sorensen
Overnight veterinarian
Eight years in emergency medicine in Chicago before he came home to Madison. Sundays to Wednesdays.
Alana Torres, LVT
Overnight technician
Critical care and the oxygen kennel. Has been on nights by choice since 2018.
Chris Novak, LVT
Overnight technician
Keeps the whiteboard tally, the coffee and the hospitalized patients’ walking schedule.
Jess Albright
Overnight client care
Answers the phone at 3 am, takes the history and sends you an update before the morning shift.
Dr. Richard Hayes
Cardiology · first Thursday
Heart murmurs and echocardiograms. Board-certified, based at the Milwaukee referral hospital.
Dr. Joan Feld
Dermatology · second Monday
Allergy testing and the itchy cases our own team has not been able to settle.
Dr. Alan Petrakis
Ophthalmology · every other Friday
Cataracts, dry eye and eye injuries. Brings his own lamp and is very particular about the lights.
Dr. Mina Cho
Dental surgery · last Wednesday
Extractions, oral surgery and fractured teeth, with Dana assisting.
A specialist, without the drive to Milwaukee.
Carol Jensen
Lakeshore Humane Society
Tom Ahlgren
Dairy farmer, Sun Prairie
Rafael Moreno
CPA, keeps us honest
Judy Kessler
Fostered 31 cats
Hank Sorrell
Good Dog Madison
Emily Haas
Dane County Cat Rescue
Why people stay.
Teresa Lindqvist
Practice manager, since 2004
“When Walt sold the practice, Ellen kept every single person on. She still makes the schedule with us, not for us. That is most of the answer.”
Daniel Ferreira
Billing and insurance, since 2021
“I came from a bank. Nobody here has ever told me to push a bigger estimate. Most days I am finding people the cheaper option.”
Dr. Grace Liu
Veterinarian, since 2017
“A hospital in Chicago offered me more. Here I get two surgery days a week and nobody times my appointments.”
Chris Novak, LVT
Overnight technician, since 2020
“Nights are quiet until they are not. When it gets busy, Dr. Sorensen is the one mopping the floor next to you.”
Skip the phone tree.
Lori Brandt
Is this an emergency?
Symptoms, “should I come in”, and anything that cannot wait for an appointment.
We are hiring two technicians and a receptionist.
3120 Atwood Avenue, Madison, WI 53704
Mon–Fri 7:30 am–7 pm · Sat 8 am–2 pm · ER every night
Joined this year
Mia Johnson
Veterinary student, UW–Madison
Third year. Here two days a week and every other weekend until she graduates in 2028.
Tyler Brooks, LVT
Technician, started in March
Came from a shelter clinic in Green Bay. Already the best at getting a vein on a cat.
Abby Lindgren, LVT
Technician, started in June
Handles our dog-friendly visits for nervous patients: slow, on the floor, lots of treats.
Laura Pierce
Client care, started in August
Ten years at a dog daycare. Knows half the dogs in the waiting room by name already.
