Dr. Heather E. McDonald provides thoughtful, comprehensive internal medicine in the heart of San Dimas — where every visit is an opportunity to build a lasting partnership in your well-being.
San Dimas
Committed to our community
Dr. Heather E. McDonald is a board-certified internal medicine physician practicing in San Dimas, California. Her approach centers on understanding each patient as an individual — considering not only their medical history but also their lifestyle, concerns, and goals for long-term health.
Whether you are managing a chronic condition, navigating a new diagnosis, or seeking a trusted physician for routine preventive care, Dr. McDonald provides the time and attention you deserve. Every appointment is an opportunity to build the kind of patient-physician relationship that makes healthcare feel personal rather than procedural.
Evidence-Based
Current best practices
Patient-First
Your concerns matter
Comprehensive
Whole-person care
Continuity
Long-term partnership
From annual wellness exams to the management of complex chronic conditions, Dr. McDonald offers a full spectrum of internal medicine services tailored to your unique health profile.
Annual physicals, routine screenings, immunizations, and health risk assessments designed to catch issues early and keep you thriving.
Expert, ongoing management of hypertension, diabetes, cholesterol, thyroid disorders, asthma, and other chronic conditions with personalized treatment plans.
Prompt evaluation and treatment for urgent health concerns — from respiratory infections and allergies to urinary tract infections and minor injuries.
Heart health screenings, EKG interpretation, blood pressure monitoring, and risk factor reduction to protect your cardiovascular system.
On-site and referenced laboratory testing, imaging coordination, and thorough interpretation of results to guide informed treatment decisions.
Age-appropriate preventive screenings, medication management, and coordinated care for adults at every stage — from young professionals to seniors.
Dr. McDonald takes the time to understand your full health picture — your history, your concerns, and what you hope to achieve. No rushed appointments.
Through careful examination and appropriate testing, Dr. McDonald identifies the root cause of your concerns and develops a clear, personalized plan.
Health is a journey, not a one-time event. Dr. McDonald provides continuous, coordinated care — adjusting plans as your needs evolve and celebrating your progress along the way.
"The best medicine begins with truly listening."
— Dr. Heather E. McDonald
Dr. McDonald welcomes patients with a broad range of insurance plans and is committed to making high-quality internal medicine care accessible to the San Dimas community.
Please call our office to confirm your specific plan is accepted. We are happy to assist with insurance questions.
Evenings and weekend appointments may be available. Contact us to discuss scheduling.
Our office is easily accessible from the 71 and 57 freeways, with ample parking and a welcoming environment designed for your comfort.
Whether you're seeking a new primary care physician or need specialized internal medicine attention, Dr. McDonald is here to help. Take the first step today.
