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Tonya Wei An, MD
I speak: English
My gender: Female
Where I practice
About me
Welcome. I am Dr. Tonya An, and I am grateful for the opportunity to care for members as an orthopedic surgeon and foot and ankle specialist. I hope this page helps you get to know my background, my approach to care, and the values that guide my practice.
Biography
I am a board-certified orthopedic surgeon and fellowship-trained foot and ankle specialist with experience in both academic and community-based practice. I completed my orthopedic surgery residency in Los Angeles and advanced fellowship training in foot and ankle surgery in New York. Before joining Kaiser Permanente, I practiced as an assistant clinical professor at Stanford University. I chose orthopedic surgery because I enjoy helping people restore mobility, independence, and function. As a musculoskeletal specialist, I can care for a broad range of conditions, including fractures, arthritis, tendon disorders, sports injuries, and nerve-related problems. Foot and ankle surgery is a focused subspecialty within orthopedics surgery, with only 30 to 40 fellowship-trained surgeons graduating each year. I appreciate the unique complexity of the foot and ankle, where small joints, tendons, ligaments, nerves, and bones all work together to support standing, walking, balance, and activity. My clinical interests include sports injuries, ankle arthritis, tendon disorders, flatfoot deformity, bunions, cartilage injuries, fractures, nerve compression, and complex lower extremity reconstruction. I care for members using both nonsurgical and surgical approaches, depending on the diagnosis, the member’s goals, and current evidence and research.
About my practice
Although I specialize in foot and ankle surgery, I see myself as a physician first. I believe it is important to understand your overall health, including medical conditions such as diabetes, vascular disease, inflammatory disease, and weight-related issues that can affect the lower extremities and influence healing. My goal is to give you a clear understanding of your diagnosis, your treatment options, and what to expect during recovery. I value shared decision-making and want you to feel informed and involved in your care. When surgery is appropriate, I focus on thoughtful planning, careful techniques, and a recovery plan that supports your long-term function. When nonsurgical care is the better path, I work with you to create a practical plan that may include activity modification, therapy, bracing, medications, injections, or other treatments. I also believe that orthopedic problems often connect to the body as a whole. Pain in the foot or ankle may affect the knee, hip, back, balance, and activity level. I aim to evaluate these issues carefully and help guide you to the right care when another specialist or treatment team member is needed.
How I thrive
Outside of medicine, I enjoy spending time with my family and my dog and staying active outdoors. I value a balanced life and try to bring that same perspective to member care. I also enjoy teaching, mentoring, tracking, and optimizing outcomes through standardized care. Whether I am caring for an athlete, a working professional, a parent, or an older adult hoping to stay mobile, I find meaning in helping people return to the activities that matter most to them.
My office
Languages spoken by medical staff
Help is available in your language. Learn more.
My provider type
Physicians and SurgeonsMedical groups, plans, and locations
Southern California Permanente Medical Group
Plans accepted
- Exclusive Provider Organization (EPO)
- HMO
- Medi-Cal Managed Care
- Point-of-Service Plan (POS)
- Senior Advantage
Alton/sand Canyon Medical Offices
Contact information
- Advice/appointments/cancellations/messages
- 1-833-574-2273 (toll free)
- Information
- 1-833-574-2273 (toll free)
Notifications
- Provider offers telehealth services.
My training, certifications and licensing
Medical school
Washington University School of MedicineBoard certification
Orthopaedic Surgery
American Board of Orthopaedic SurgeryMedical training
Fellowship
Orthopedics-Foot and Ankle
Hospital for Special SurgeryInternship
Orthopaedic Surgery
Cedars Sinai Medical CenterResidency
Orthopaedic Surgery
Cedars Sinai Medical CenterJoined Permanente Medical Group
2025Active license information
License number
A153483License type
Physician and SurgeonLicense issuing state
CALIFORNIANational Provider Identifier (NPI)
1699292045Cultural Competency Training (CCT)
PendingMy hospitals
All Kaiser Permanente physicians and podiatrists have admitting privileges or the ability to refer patients to our plan hospitals. Admitting privileges of other providers may vary by plan and facility. Contact your plan administrator for details.
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Kaiser Permanente uses the same quality, member experience, or cost-related measures to select practitioners and facilities in Marketplace Silver-tier plans as it does for all other Kaiser Foundation Health Plan (KFHP) products and lines of business. The measures may include, but are not limited to, HEDIS/CAHPS performance, member/patient complaints, patient safety scores, hospital quality measures, and geographic need. Members enrolled in KFHP Marketplace plans have access to all professional, institutional and ancillary health care providers who participate in KFHP plans’ contracted provider network, in accordance with the terms of members’ KFHP plan of coverage. All Kaiser Permanente Medical Group physicians and network physicians are subject to the same quality review processes and certifications.
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This information was last verified or updated on 11/02/2026