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Dr. Mark Haas, MD is a Doctor primarily located in Pasadena, CA. He has 34 years of experience. His specialties include Pathology. He speaks English.


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Specialties & Expertise

Dr. Mark Haas has the following 3 areas of expertise and 1 specialty.


A pathologist is a physician who specializes in the causes and paths taken by different diseases in order to accurately diagnose an illness.

Pathologists diagnose and determine the characteristics of a disease through the study of biopsies of diseased tissue or of bodily fluids. For example, a pathologist will look at a biopsy of a skin lesion in order to diagnose or rule out skin cancer. A pathologist will also look at a Pap smear in order to check for a gynecological cancer like cancer of the uterus.

In addition to determining the cause and development of a disease, these specialists also study the changes a disease makes to a body and the consequences of those structural changes.


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Locations & Directions

Consultants for Pathology

1801 W Olympic Blvd
Pasadena, CA 91199

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