Skip to main content
William Loos, MD, Internal Medicine, Sylmar, CA

William Fred Loos MD


Professor, Medicine, UCLA School of Medicine

Join to View Full Profile
  • 14445 Olive View DrRoom 6b119-HSylmar, CA 91342

  • Phone+1 818-364-3035

  • Fax+1 818-364-3044

Are you Dr. Loos?

Join over one million U.S. Physicians, Nurse Practitioners and PAs, already on Doximity.

  • Gain access to free telehealth tools, such as our "call shielding" and one-way patient texting.
  • Connect with colleagues in the same hospital or clinic.
  • Read the latest clinical news, personalized to your specialty.

Summary

  • Dr. William Loos, MD is a board certified internist in Sylmar, California. He is currently licensed to practice medicine in California. He is a Professor at UCLA School of Medicine.

Education & Training

  • UCLA-VA Greater Los Angeles
    UCLA-VA Greater Los AngelesResidency, Internal Medicine, 1977 - 1980
  • University of Washington School of Medicine
    University of Washington School of MedicineClass of 1977

Certifications & Licensure

  • CA State Medical License
    CA State Medical License 1980 - 2025
  • Internal Medicine
    American Board of Internal Medicine Internal Medicine