Browse Health
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. Henry Sonneborn:

View the full profile to get information on:

  1. Qualifications
  2. What's important to you

View full profile

Patient Reviews

Patient comments (0)

The overall average patient rating of Dr. Henry Sonneborn is Excellent. Dr. Sonneborn has been reviewed by 2 patients who have provided 0 comments. The rating is 4.5 out of 5 stars.

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

Specialties & Research

Dr. Henry Sonneborn, MD is board certified in Internal Medicine and Medical Oncology.

  • He has special expertise in 1 area:
  • Cancer

Education & Awards

Dr. Sonneborn graduated from Albany Medical College.


Dr. Sonneborn has 3 hospital affiliations:

  • Wentworth-Douglass Hospital 
  • Portsmouth Regional Hospital 
  • Frisbie Memorial Hospital 


  • English

> > > > Dr. Henry Sonneborn, MD

Similar doctors nearby

Dr. Brian Hyett

Internal Medicine
6 years experience
Portsmouth, NH

Dr. Jennifer Carter

Internal Medicine
Portsmouth, NH

Dr. Issam El Bizri

Internal Medicine
1 years experience
Portsmouth, NH

Dr. Ira Schwartz

Internal Medicine
Portsmouth, NH

Dr. Steven Paul

Internal Medicine
38 years experience
Portsmouth, NH

Dr. Thomas Clairmont

Internal Medicine
37 years experience
Portsmouth, NH
Search All Similar Doctors
Additional Information
Dr. Henry L Sonneborn MD is a male Internist, has 37 years of experience and practices in Internal Medicine and Medical Oncology.
Where does Dr. Henry L. Sonneborn practice?
Dr. Henry Sonneborn has 2 office locations.
Dr. Henry Sonneborn practices Internal Medicine and Medical Oncology near Portsmouth, NH.
Additional practice locations include: Dover, NH.
See Portsmouth Internists and Portsmouth Oncologists.