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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).

Patient Reviews

Patient comments (1)

The overall average patient rating of Dr. Stanley Hahn, Surgeon, Gastroenterologist is Excellent. Dr. Hahn has been reviewed by 9 patients who have provided 1 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.0
Promptness 5.0
Courteous Staff 5.0
Accurate Diagnosis 5.0
Bedside Manner 5.0
Spends Time with Me 5.0
Follows Up After Visit 5.0

Specialties & Research

Dr. Stanley Hahn, MD is board certified in Surgery.

  • He has special expertise in 3 areas:
  • Gastric Bypass (Gastrojejunostomy)
  • Stomach Stapling (Gastroplasty)
  • Weight Loss Surgery (Bariatric Surgery)

Education & Awards

Dr. Hahn graduated from University of Iowa, Iowa City.


Dr. Hahn has 4 hospital affiliations:

  • Hancock County Memorial Hospital 
  • Mercy Medical Center - North Iowa 

> > > > Dr. Stanley Hahn, MD

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Additional Information
Dr. Stanley Hahn MD is a male Surgeon and practices in Surgery.
Where does Dr. Stanley Hahn practice?
Dr. Stanley Hahn has 4 office locations.
Dr. Stanley Hahn practices Surgery near Mason City, IA.
Additional practice locations include: Marshfield, WI.
See Mason City Surgeons.