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

Dr. Marilyn Gail Lajoie, MD

Individual provider Adult Medicine Physician · NPI 1144269127

Dr. Marilyn Gail Lajoie, MD is an Adult Medicine Physician in Helena, Montana. Practices as a sole proprietor. Licensed in Florida and Montana.

Licensed in
FL, MT
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

5535 Sun Hill Dr
Helena, MT 59602-9443
Phone: (321) 287-5335
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

General Practice Physician (primary) Taxonomy 208D00000X · Licence 87638 (MT)
Adult Medicine Physician Taxonomy 207QA0505X · Licence ME87692 (FL)
Internal Medicine Physician Taxonomy 207R00000X · Licence ME87692 (FL)

Record details

NPI number1144269127
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 6, 2006
Last updated in NPPESMay 13, 2023
Certification dateMay 13, 2023

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