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

Deborah K Nelles PC

Organization Clinical Social Worker · NPI 1235444852

Deborah K Nelles PC is a Clinical Social Worker in Helena, Montana. Registered with an NPI since 2010.

In the registry since
2010
What do these letters mean?
PC — Professional corporation
A form of business registration, not a clinical qualification.

See every abbreviation used in this directory →

Practice location Address checks out

510 Leslie Ave
Helena, MT 59601-2820
Phone: (406) 442-9978
Show map & directions

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

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X

Record details

NPI number1235444852
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Deborah Nelles — President · (406) 442-9978
NPI enumeratedAugust 9, 2010
Last updated in NPPESSeptember 22, 2010
Mailing address510 Leslie Ave, Helena, MT 59601-2820

Other providers in Helena