Internal Medicine

Internal Medicine

At St. Joseph Heritage Medical Group, we're committed to providing the finest evidence-based medicine, which ensures our patients receive the latest and most tested treatment options. Our board-certified internal medicine physicians specialize in maintaining and improving the health of adults. Offering expert care for a wide range of health concerns, our clinical excellence extends from disease prevention and wellness to the care and management of chronic conditions, such as heart disease, diabetes and arthritis.Equally important, we take pride in caring for our patients for life — meeting each health need with comprehensive and compassionate care.

We provide expert primary care for adults, including:

  • Wellness and disease prevention
  • Health screenings, including cancer and cardiovascular screenings
  • Women’s health, including comprehensive well woman exams
  • Illnesses, from common to complex
  • Care and management of common and chronic conditions, including: diabetes, heart disease, high blood pressure and asthma
  • Treatment of minor injuries
  • Geriatric care

View Our Locations

Garden Grove - Harbor Blvd.

Orange - 845 W. La Veta

Orange - Chapman

Santa Ana

Tustin - Irvine Blvd.

Meet Our Doctors

R. William Buster MD (714) 639-2600
Internal Medicine (Board Certified)
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Office :
845 W La Veta Ave. #108
Orange, CA 92868
Laura M Cho MD (714) 628-3120
Internal Medicine (Board Certified)
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Office :
2501 E Chapman Ave., Ste 306
Orange, CA 92869
Douglas Clark MD (714) 705-2120
Internal Medicine (Board Certified)
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Office :
12942 Harbor Blvd.
Garden Grove, CA 92840
Bonnie Connolly MD (714) 505-7110
Internal Medicine (Board Certified)
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Office :
1095 Irvine Blvd
Tustin, CA 92780
Jane Curtis MD (714) 288-3230
Internal Medicine (Board Certified)
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Office :
2212 E. 4th Street Suite #304
Santa Ana, CA 92705
Chesda Eng, MD (714) 505-7110
Internal Medicine (Board Certified)

Monday - Friday: 8:00 a.m. - 5:00 p.m.

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Office :
1095 Irvine Blvd.
Tustin, CA 92780
Kathleen Glaspy MD (714) 628-3110
Internal Medicine (Board Certified)
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Office :
2501 E. Chapman Ave.
Suite 305
Orange, CA 92869
Diane Kim MD (714) 288-3230
Internal Medicine (Board Certified)

M: 8 a.m. - 5 p.m. W: 8 a.m. - 5 p.m. F: 8 a.m. - 5 p.m.

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Office :
St. Joseph Heritage Medical Group
2212 E. Fourth St., Suite 304
Santa Ana, CA 92705
Julie Vu MD (714) 705-2120
Internal Medicine (Board Certified)
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Office :
12942 Harbor Blvd.
Garden Grove, CA 92840
Lulu Yang MD (714) 639-2600
Internal Medicine (Board Certified)
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Office :
845 W. La Veta Ave. #108
Orange, CA 92868