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License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. Mark Forrestal:

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Specialties & Research

Dr. Mark Forrestal, MD is board certified in Internal Medicine.

  • He has special expertise in 4 areas:
  • Acute Coronary Syndrome (ACS)
  • Heart Block
  • High Blood Pressure (Hypertension)
  • Unstable Angina

Education & Awards

Dr. Forrestal graduated from University of Guadalajara, Mexico, San Antonio.


Dr. Forrestal has 3 hospital affiliations:

  • Holy Family Medical Center 
  • Northwest Community Hospital 
  • Holy Family Hosp, Des Plaines, Il 

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Additional Information
Dr. Mark Dennis Forrestal MD is a male Internist, has 32 years of experience and practices in Internal Medicine.
Where does Dr. Mark D. Forrestal practice?
Dr. Mark Forrestal has 1 office location.
Dr. Mark Forrestal practices Internal Medicine near Arlington Heights, IL.
See Arlington Heights Internists.