Find a Doctor

New Search
Mark D.  Weissig, MD
Practice accepting new patients.

Mark D. Weissig, MD

(714) 626-8650
Primary Specialties
  • Pulmonology
    (Board Certified)
Secondary Specialties
  • Internal Medicine
    (Board Certified)
Medical Groups & Affiliations
  • St. Jude Heritage Medical Group

Primary Office

2141 N. Harbor Blvd.
Suite 2500
Fullerton, CA 92835
(714) 626-8650
(714) 626-8670
Web Page:
Recommend this Physician Request an Update for this Physician
4.8 out of 5 (152 Ratings | 29 Comments)


Years of practice is a good thing when facing serious illness. Nursing staff & others attentive to providing copies etc.
Good if I don't like a dr. on the first visit I don't go back.
*Dr. Weissig is a knowledgeable and caring doctor.
*Dr. Weissig is sincere and very genuine in his concern for me. He called my home to see how I and my husband were doing -
*Dr. Weissig is probably the best doctor I ever had, especially for dealing with my symptoms
29 Total Comments Page 1 2 3 4 5 6   Next


  • Medical School:
    Duke University School of Medicine - Durham, NC
  • Internship:
    Duke University Medical Center - Durham, NC
  • Residency:
    Duke University Medical Center - Durham, NC
  • Fellowship:
    UCLA School of Medicine - Los Angeles, CA
  • Board Certified in Internal Medicine
  • Board Certified in Pulmonology

Areas of Interest

  • Asthma
  • Sleep disorders
  • COPD
  • Smoking Cessation
  • Pulmonary Fibrosis