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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 Hattenhauer:

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Specialties & Research

Dr. Mark Hattenhauer, MD is board certified in Internal Medicine and Cardiovascular Disease.

  • He has special expertise in 6 areas:
  • Acute Coronary Syndrome (ACS)
  • Heart Block
  • High Blood Pressure (Hypertension)
  • High Cholesterol (Hypercholesterolemia)
  • Interventional Cardiology
  • Unstable Angina

Education & Awards

Dr. Hattenhauer graduated from Oregon Health & Science University, Portland.


Dr. Hattenhauer has 13 hospital affiliations:

  • Legacy Meridian Park Hospital 
  • Oregon Health & Science University Hospitals And Clinics 

> > > > Dr. Mark Hattenhauer, MD

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Additional Information
Dr. Mark Thomas Hattenhauer MD is a male Internist, has 45 years of experience and practices in Internal Medicine and Cardiovascular Disease.
Where does Dr. Mark T. Hattenhauer practice?
Dr. Mark Hattenhauer has 5 office locations.
Dr. Mark Hattenhauer practices Internal Medicine and Cardiovascular Disease near Tualatin, OR.
Additional practice locations include: Portland, OR and Longview, WA.
See Tualatin Internists and Tualatin Cardiologists.