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

Dr. William Roy Karl Johnson, MD

Individual provider Internal Medicine Physician · NPI 1710057351

Dr. William Roy Karl Johnson, MD is an Internal Medicine Physician in Dayville, Connecticut. Licensed in Connecticut. Registered with an NPI since 2006.

Licensed in
CT
In the registry since
2006
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

612 Hartford Pike Medical Center Of Northeast Connecticut
Dayville, CT 06241
Phone: (860) 779-0867
Fax: (860) 779-0386
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 22859 (CT)

Record details

NPI number1710057351
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 9, 2006
Last updated in NPPESNovember 10, 2010

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