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

Mrs. Gretchen Allyn Appleby Henderson, MS, ATC

Individual provider Athletic Trainer · NPI 1215474093

Mrs. Gretchen Allyn Appleby Henderson, MS, ATC is an Athletic Trainer in Portland, Maine. Practices as a sole proprietor. Licensed in Maine.

Licensed in
ME
In the registry since
2017
What do these letters mean?
MS — Master of Science
A graduate science degree.
ATC — Certified Athletic Trainer
Prevents and treats sport and activity injuries.

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Practice location Address checks out

9 Exeter St
Portland, ME 04102-2806
Phone: (207) 542-5679
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Athletic Trainer (primary) Taxonomy 2255A2300X · Licence AT461 (ME)

Record details

NPI number1215474093
Entity typeIndividual (Type 1)
GenderFemale
Credentials MS , ATC
Sole proprietorYes
NPI enumeratedJanuary 31, 2017
Last updated in NPPESJanuary 31, 2017

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