Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. David Wells Ferguson, MD

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1922151372

Dr. David Wells Ferguson, MD is a Critical Care Medicine (Internal Medicine) Physician in Belfast, Maine. Licensed in Maryland and Virginia. Registered with an NPI since 2007.

Licensed in
MD, VA
In the registry since
2007
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

118 Northport Ave
Belfast, ME 04915-6009
Phone: (207) 338-1838
Fax: (207) 338-3836
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Critical Care Medicine (Internal Medicine) Physician (primary) Taxonomy 207RC0200X · Licence D0060893 (MD)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 0101235228 (VA)

Record details

NPI number1922151372
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 19, 2007
Last updated in NPPESOctober 9, 2013