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

Mary-Ellen Ostherr, MA, LADC, CCS

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1407936669

Mary-Ellen Ostherr, MA, LADC, CCS is an Addiction (Substance Use Disorder) Counselor in Rockland, Maine. Licensed in Maine. Registered with an NPI since 2006.

Licensed in
ME
In the registry since
2006
What do these letters mean?
MA — Master of Arts
A graduate arts degree.
LADC — Licensed Alcohol and Drug Counselor
A licensed addiction counsellor.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

17 Masonic St
Rockland, ME 04841
Phone: (207) 841-6775
Fax: (207) 236-8073
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Addiction (Substance Use Disorder) Counselor (primary) Taxonomy 101YA0400X · Licence LC3421 (ME)

Record details

NPI number1407936669
Entity typeIndividual (Type 1)
GenderFemale
Credentials MA , LADC , CCS
Sole proprietorNo
NPI enumeratedOctober 16, 2006
Last updated in NPPESJune 11, 2008

Other providers in Rockland