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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. Merrill Ahrens:

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  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (3)

The overall average patient rating of Dr. Merrill Ahrens is Excellent. Dr. Ahrens has been reviewed by 6 patients who have provided 3 comments. The rating is 5 out of 5 stars.

Patient Ratings
Ease of Appointment 5.0
Promptness 5.0
Courteous Staff 4.3
Accurate Diagnosis 5.0
Bedside Manner 5.0
Spends Time with Me 5.0
Follows Up After Visit 5.0

Specialties & Research

Dr. Merrill Ahrens, MD is board certified in Internal Medicine.

Education & Awards

Dr. Ahrens graduated from Northwestern University, Chicago. He has 3 awards.

Patients' Choice Award (2008 - 2009)
Bridges to Excellence Recognition
Bridges to Excellence Medical Home Recognition (2012 - 2015)
Level III
NCQA Physician Practice Connections - Patient Centered Medical Home (2012 - 2015)


Dr. Ahrens has 1 hospital affiliations:

  • Kaiser Sunnyside Medical Center 


  • English

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Additional Information
Dr. Merrill Marshall Ahrens MD is a male Internist, has 22 years of experience and practices in Internal Medicine.
Where does Dr. Merrill M. Ahrens practice?
Dr. Merrill Ahrens has 1 office location.
Dr. Merrill Ahrens practices Internal Medicine near Portland, OR.
See Portland Internists.