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

Mary Louise Langlois, MD

Individual provider Internal Medicine Physician · NPI 1447433867

Mary Louise Langlois, MD is an Internal Medicine Physician in Boulder, Colorado. Licensed in Colorado. Registered with an NPI since 2007.

Licensed in
CO
In the registry since
2007
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

2575 Spruce St
Boulder, CO 80302-3806
Phone: (303) 449-3594
Fax: (303) 449-3112
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 31795 (CO)

Record details

NPI number1447433867
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 7, 2007
Last updated in NPPESDecember 7, 2007

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