background
background
Dr. Henry Sonneborn, MD

Dr. Henry Sonneborn, MD

Medical Oncology*
50+ years of experience

Dr. Henry Sonneborn, MD is a medical oncologist in Dover, NH and has over 50 years of experience in the medical field. He graduated from ALBANY MEDICAL COLLEGE in 1974. He is affiliated with medical facilities Portsmouth Regional Hospital and Wentworth-Douglass Hospital. He is accepting new patients and telehealth appointments.

5 Star Rating
Based on 3 reviews 5 Star Rating (3 reviews)

Practice

789 Central Ave Dover, NH 03820
Telehealth available

Make an Appointment

(603) 742-8787

Hospital Highlight

Dr. Sonneborn is affiliated with Wentworth-Douglass Hospital Dover, a highly rated hospital.

At a Glance

  • Areas of Expertise
    Dr. Sonneborn specializes in the areas of Internal Medicine & Medical Oncology. • See board certifications
  • Explains Conditions Well
    Patients said this doctor explains conditions well. • See reviews
  • Offers Telehealth
    This doctor offers telehealth appointments. Call the office to schedule an appointment.
  • Practices at Top Hospital
    Patient Safety Excellence Award™ • See hospitals
ADVERTISEMENT
healthgrades-rx

Save money with free prescription discounts

Optum Perks and Healthgrades are subsidiaries of RVO Health.

Experience Check

Search for experience in a specific area

Learn more about experience and why treatment frequency matters

Insurance Check

Search for your insurance carrier and choose your plan type

Dr. Sonneborn's Reviews

Likelihood to recommend Dr. Sonneborn

5.0

3 ratings
5 Star
100%
100%
4 Star
0%
0%
3 Star
0%
0%
2 Star
0%
0%
1 Star
0%
0%

Leave a review

How was your experience with Dr. Sonneborn?

Know Before You Go

About Me

biography

Dr. Henry Sonneborn, MD is a medical oncologist in Dover, NH and has over 50 years of experience in the medical field. He graduated from ALBANY MEDICAL COLLEGE in 1974. He is affiliated with medical facilities Portsmouth Regional Hospital and Wentworth-Douglass...read more

  • Medical Oncology

  • Internal Medicine

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • Albany Medical College

    Medical School, 1974
American Board of Medical Specialties®
American Board of Internal Medicine®
- 
Internal Medicine
- 
Medical Oncology
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.

Healthgrades receives board action history for physicians and physician assistants. The information displayed here is sourced from independent information providers, such as state board websites, and may not be the most up-to-date information. Healthgrades makes no representations with respect to the accuracy of any information provided here and assumes no responsibility or liability for such information.

Learn more about medical license public record check

Focus on Breast Cancer

Locations

Practice

Wentworth-Douglass Hospital789 Central Ave Dover, NH 03820
1

Affiliated Hospitals

  • Wentworth-Douglass Hospital

    789 Central Ave
    Dover, NH 03820
    Recipient of 9
    hospital awards

    Patient Safety Excellence Award™ (2025)

    Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

    Outstanding Patient Experience Award™ (2024, 2023, 2022)

    Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

    View all awards

    How patients felt about the care they received at this hospital.

    89%
    Patients said they were given information about recovering at home

    5% higher than the national average

    80%
    Patients said that nurses always listened to them and explained things well

    5% higher than the national average

    View all patient feedback

  • Portsmouth Regional Hospital

    333 Borthwick Ave
    Portsmouth, NH 03801
    Recipient of 14
    hospital awards

    America's 250 Best Hospitals Award™ (2025, 2024, 2023)

    Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

    Patient Safety Excellence Award™ (2025, 2024)

    Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

    View all awards

    How patients felt about the care they received at this hospital.

    81%
    Patients said they were given information about recovering at home

    3% lower than the national average

    76%
    Patients said that doctors always listened to them and explained things well
    View all patient feedback
Learn more about how Healthgrades measures Hospital Quality