Let our doctors help you improve your quality of life when your loved one suffers from a chronic illness. Chronic illnesses tend to last for months or years and require longer-term treatment or medical management.

  • Hypertension (high blood pressure)
  • Hyperlipidemia (high cholesterol)
  • Diabetes & diabetes symptoms
  • Thyroid disorders
  • Depression, bipolar depression
  • Gout
  • Seizure disorders (epilepsy, etc.)
  • Obesity

Discover family healthcare you can trust at Rancho Family Practice Associates. Call 909-942-0247 or use our Request an Appointment form. Our chronically ill patients come to us from Chino, Fontana, Ontario, Pomona, Rancho Cucamonga and surrounding areas.

Our Services

  • Acute Illnesses

    Our doctors and support team are here to help your family with ...

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  • Chronic Illnesses

    Let our doctors help you improve your quality of life when your...

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  • Preventative Care

    Creating an environment where good health can thrive is the foundation...

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  • Women's Health

    Our doctors are experts in the wide spectrum of women's health issues ...

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  • Diet & Nutrition

    Maintaining good health and proper weight does not have to be tedious...

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  • Blog Posts

    Sunscreen should be worn everyday, thats right everyday.  When you're not ...

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Contact Us Today

Lothar McMillian, MD, FAAFP, is the medical director of Rancho Family Practice Associates located at 7777-B Milliken Avenue, Suite 240 in Rancho Cucamonga, CA 91730 and serving Rancho Cucamonga, Chino, Fontana, Ontario, Upland and the surrounding California communities. Phone: 909-941-0247. Fax: 909-948-7950


Address: 7777-B Milliken Ave., Suite 240 Rancho Cucamonga, CA 91730