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Primary Care Doctor, Family Practitioner, General Practitioner
9 years of experience
Video profile
Accepting new patients
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. David Keller is Excellent. Dr. Keller has been reviewed by 7 patients who have provided 1 comments. The rating is 5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.5
Promptness 4.2
Courteous Staff 5.0
Accurate Diagnosis 5.0
Bedside Manner 5.0
Spends Time with Me 4.7
Follows Up After Visit 5.0

Specialties & Research

  • He has special expertise in 1 area:
  • Flu (Human Influenza)

Education & Awards

Dr. Keller graduated from Philadelphia College of Osteopathic Medicine. He has 2 awards.

Patients' Choice Award (2012)
Compassionate Doctor Recognition (2012, 2014)


Dr. Keller has 5 hospital affiliations:

  • Maine Medical Center 
  • Mercy Hospital 

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Additional Information
Dr. David D Keller DO is a male Family Practitioner, has 9 years of experience and practices in Family Medicine and General Practice.
Where does Dr. David D. Keller practice?
Dr. David Keller has 4 office locations.
Dr. David Keller practices Family Medicine and General Practice near Portland, ME.
Additional practice locations include: Scarborough, ME and Harrison, ME.
See Portland Primary Care Doctors.