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

Katharine I. Johnson, RRT

Individual provider Registered Respiratory Therapist · NPI 1538869284

Katharine I. Johnson, RRT is a Registered Respiratory Therapist in South Portland, Maine. Licensed in Maine. Registered with an NPI since 2023.

Licensed in
ME
In the registry since
2023
What do these letters mean?
RRT — Registered Respiratory Therapist
Treats breathing disorders and manages ventilators.

See every abbreviation used in this directory →

Practice location Address checks out

100 Foden Rd
South Portland, ME 04106-1715
Phone: (207) 523-8500
Fax: (207) 523-8591
Show map & directions

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

Specialties & licences

Registered Respiratory Therapist (primary) Taxonomy 227900000X · Licence TH2058 (ME)

Record details

NPI number1538869284
Entity typeIndividual (Type 1)
GenderFemale
Credentials RRT
Sole proprietorNo
NPI enumeratedMarch 9, 2023
Last updated in NPPESJune 6, 2025
Certification dateJune 6, 2025