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. David Keller:
View the full profile to get information on:
- What's important to you
View full profile
The overall average patient rating of Dr. David Keller is Excellent.
|Ease of Appointment||
|Spends Time with Me||
|Follows Up After Visit||
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.
Dr. Keller has 5 hospital affiliations:
- Maine Medical Center
- Mercy Hospital
Similar doctors nearby
- 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 and Portland General Practitioners.