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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. Marc Ernstoff is Excellent. Dr. Ernstoff has been reviewed by 6 patients who have provided 1 comments. The rating is 5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.8
Promptness 4.2
Courteous Staff 5.0
Accurate Diagnosis 5.0
Bedside Manner 4.7
Spends Time with Me 4.7
Follows Up After Visit 5.0

Specialties & Research

Dr. Marc Ernstoff, MD is board certified in Medical Oncology.

  • He has special expertise in 7 areas:
  • Biological Therapy (Immunotherapy)
  • Cancer
  • Clinical Research
  • Epidemiology
  • Melanoma
  • Skin Cancer
  • Urogenital Cancer (Genitourinary)

Education & Awards

Dr. Ernstoff graduated from New York University. He has 5 awards.

Castle Connolly America's Top Doctors® (2009, 2012 - 2015)
Castle Connolly America's Top Doctors® for Cancer (2009, 2012, 2014 - 2015)
Patients' Choice Award (2014)
Compassionate Doctor Recognition (2014)
On-Time Doctor Award (2014)


Dr. Ernstoff has 10 hospital affiliations:

  • Mary Hitchcock Memorial Hospital 
  • Elliot Hospital 

> > > > Dr. Marc Ernstoff, MD

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Additional Information
Dr. Marc Stuart Ernstoff MD is a male Oncologist , has 33 years of experience and practices in Medical Oncology.
Where does Dr. Marc S. Ernstoff practice?
Dr. Marc Ernstoff has 4 office locations.
Dr. Marc Ernstoff practices Medical Oncology near Lebanon, NH.
Additional practice locations include: Manchester, NH and Nashua, NH.
See Lebanon Oncologists.