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

Douglas Ryan Klier, MA

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1356659155

Douglas Ryan Klier, MA is an Addiction (Substance Use Disorder) Counselor in Worcester, Massachusetts. Registered with an NPI since 2010.

In the registry since
2010
What do these letters mean?
MA — Master of Arts
A graduate arts degree.

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Practice location Address checks out

44 Frnt ST Ste 490
Worcester, MA 01608-1742
Phone: (508) 799-2934
Fax: (508) 770-1974
Show map & directions

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

Specialties & licences

Addiction (Substance Use Disorder) Counselor (primary) Taxonomy 101YA0400X

Record details

NPI number1356659155
Entity typeIndividual (Type 1)
GenderMale
Credentials MA
Sole proprietorNo
NPI enumeratedSeptember 15, 2010
Last updated in NPPESSeptember 15, 2010

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