Kathy Andres, ACVIM

Kathy Andres, ACVIM
Animal Internal Medicine Specialty Services 1333 9th Avenue San Francisco, CA 94122

Kathy Andres, ACVIM

We are a locally owned, 24-hour emergency, critical care, and specialty veterinary hospital located in the Inner Sunset district of San Francisco. Working with local family veterinarians, we provide veterinary care for pet owners after their regular veterinary offices have closed or when specialist care is indicated.

Addressing the medical needs of a very sick or injured pet and the emotional needs of the pet’s family can be challenging. Tackling chronic, acute, or life-threatening situations is not for every veterinary practice. When you need us, we are here for you and your pets. At AIMSS and AES, we pride ourselves on our collective skills in treating complex health problems and coming up with effective solutions.

Many pet owners choose us because they want the same level of care that they have for themselves and other members of their family. We offer the highest level of care and provide the tools and information to make informed health care decisions for your pet.

A Unique Practice Staffed with Dedicated Professionals & Specialists

AIMSS has assembled a team of board-certified veterinary specialists who have extraordinary diagnostic and patient care skills and impeccable credentials.

AES offers 24/7 emergency and critical care in the same convenient location. This offers peace of mind in an emergency situation—your pet is seen by a veterinary emergency doctor and consultation with one of our specialists is only minutes away. We keep your family veterinarian informed of your pet’s condition and collaborate with them to provide the most comprehensive care for your pet.

AIMSS and AES, Locally Owned & Operated

Dr. Jill Williamson founded Animal Internal Medicine and Specialty Services (AIMSS) and Animal Emergency Services (AES) in 2011 with one goal in mind: to provide exceptional veterinary care and client service to the San Francisco Bay area.

As large corporations are taking over smaller, privately owned and operated clinics, we remain true to our values by maintaining our independence as a privately owned and operated first-class veterinary hospital. We are proud to be the only locally owned and operated specialty, emergency, and critical care veterinary facility in San Francisco. The founder and owners of AIMSS and AES work daily in the hospital as clinicians and managers.

What does local ownership mean to you and your pet’s health?

We are not limited by corporate policies or compensation models. This allows us to provide a personal and quality veterinary care experience. Most importantly, it also enables our specialists and emergency veterinarians to collaborate as a team of experts, focused solely on what is best for your pet’s health.

Hours & Location

We see patients 24/7 in our emergency clinic and our hours for specialty appointments are 8 a.m. to 6 p.m., Monday through Friday, with some specialty services available on Saturdays.

AIMSS/AES is located at 1333 9th Avenue in San Francisco’s Inner Sunset district, near Golden Gate Park. Our location and the fact that we provide parking make us convenient to many locations in Marin County and the Peninsula.
Primary Specialty


Gender Female
Affiliations San Francisco Veterinary Medical Association, American College of Internal Medicine, American College of Veterinary Radiology, American College of Emergency and Critical Care, American Veterinary Medical Association, California Veterinary Medical Association
Office Staff Dr. Jon Enyart
Dr. Joe Graff
Dr. Emily Kupprion
Dr. Solene Moreton
Dr. Karen Truong
Dr. Jill Williamson, ACVECC, Emergency and Critical Care
Dr. Dorrie Black, ACVECC, Emergency and Critical Care
Dr. Sophie Dennison, ACVR Diagnostic Imaging & Radiology
Dr. Kathy Andres, ACVIM, Oncology
Dr. Carrie Jurney, ACVIM, Neurology & Neurosurgery
Dr. Dr. Sharon Gottfried, Board Certified Surgeon Surgery
Dr. Sarah Stewart, ACVIM, Internal Medicine
Payment Options Cash, Cashier's check, Debit Card, Master Card, VISA, and Care Credit
Services Animal Internal Medicine and Specialty Services (AIMSS) is a practice comprised of highly credentialed board-certified specialists accustomed to dealing with even the most challenging animal health conditions. We work with pet owners and family veterinarians throughout the Bay area, Marin County, and the Peninsula.

As a private, locally owned practice, we are not constrained by formulaic or “one-size-fits” methods employed by corporately owned veterinary hospitals. Rather, we customize our treatment plans, utilizing the best talents of our specially trained vets.

We consult and provide treatment on a number of conditions and diseases. Our specialty services include:

Surgery—Offering both emergency and specialty surgery with state-of-the-art orthopedic and oncologic procedures
Internal medicine—Excelling in diagnosing complex conditions through the development of personalized diagnostic and treatment plans and management of chronic medical conditions
Diagnostic Imaging—Radiography, ultrasound, and cross—sectional imaging including CT and MRI, providing the most advanced level of diagnostics
Advanced Critical Care—24-hour around the clock care to manage life-threatening situations and to deploy life-saving therapies
Cardiology——Customized diagnostics including echocardiography and ECG with care and management of common cardiac ailments
Neurology and Neurosurgery—Medical and surgical treatment of both central and peripheral nervous systems and neuromuscular conditions
Oncology—Customized treatment plans that promote an excellent quality of life utilizing the newest therapeutic approaches for animals with cancer
Ambulance service—Transport to us from the family veterinarian, which may be required for very sick pets

We welcome new clients and case referrals. For more information about our specialty services, please contact us.
Additional Services Emergency and critical care, oncology, internal medicine, neurology, neurosurgery, ultrasound, radiology, diagnostic imaging, cardiology
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