> > > > Dr. Henry Sonneborn, MD
Dr. Henry Leo Sonneborn MD is a male Internist, has 36 years of experience and practices in Internal Medicine, Medical Oncology, Hematology & Oncology, and Hematology.
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Dr. Henry Sonneborn has 3 office locations.
330 Borthwick Ave
Ste 301
Portsmouth, NH 03801

Phone Number
Locations and availability (3)
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).

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Specialties & Research

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

Education & Awards

Dr. Sonneborn graduated from Albany Medical College.


Dr. Sonneborn has 3 hospital affiliations:

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

Accepted Insurance Plans

Dr. Sonneborn accepts these health insurances in at least one office:

  • United Healthcare - 12 plans
  • Cigna - 42 plans
  • Humana - 6 plans
  • Great-West Healthcare - 3 plans
  • Medicare - 1 plan
  • Anthem - 13 plans
  • Aetna - 3 plans

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Additional Information
Where does Dr. Henry L. Sonneborn practice?
Dr. Henry Sonneborn practices Internal Medicine, Medical Oncology, Hematology & Oncology, and Hematology near Portsmouth, NH.
Additional practice locations include: Dover, NH.
See Portsmouth Internists, Portsmouth Oncologists, and Portsmouth Hematologists.