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

Cyndi Lu Marengo, RDH

Individual provider Dental Hygienist · NPI 1700109790

Cyndi Lu Marengo, RDH is a Dental Hygienist in St Ignatius, Montana. Practices as a sole proprietor. Licensed in Connecticut and Massachusetts.

Licensed in
CT, MA
In the registry since
2010
Specialties on file
2
What do these letters mean?
RDH — Registered Dental Hygienist
A licensed hygienist who cleans teeth and screens for oral disease.

See every abbreviation used in this directory →

Practice location Address checks out

380 Mission Dr
St Ignatius, MT 59864
Phone: (406) 745-3525
Fax: (406) 745-4235
Show map & directions

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

Specialties & licences

Dental Hygienist (primary) Taxonomy 124Q00000X · Licence 006256 (CT)
Dental Hygienist Taxonomy 124Q00000X · Licence 12417 (MA)

Record details

NPI number1700109790
Entity typeIndividual (Type 1)
GenderFemale
Credentials RDH
Sole proprietorYes
NPI enumeratedMarch 5, 2010
Last updated in NPPESMarch 5, 2010

Other providers in St Ignatius