Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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C.e. Nassi Consulting Group, LLC

Organization Addiction (Substance Use Disorder) Counselor · NPI 1124415534

C.e. Nassi Consulting Group, LLC is an Addiction (Substance Use Disorder) Counselor in Washington, District of Columbia. Licensed in District of Columbia. Registered with an NPI since 2015.

Licensed in
DC
In the registry since
2015
Specialties on file
4
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

3845 S Capitol St SW
Washington, DC 20032-1419
Phone: (202) 210-1299
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Professional Counselor (primary) Taxonomy 101YP2500X · Licence PRC14847 (DC)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X · Licence CACII 1254 (DC)
Mental Health Counselor Taxonomy 101YM0800X · Licence LGPC00039 (DC)
Developmental Disabilities Clinic/Center Taxonomy 261QD1600X

Record details

NPI number1124415534
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Karen Devalera — Owner · (202) 210-1299
NPI enumeratedApril 23, 2015
Last updated in NPPESApril 14, 2022
Certification dateApril 14, 2022
Mailing address66 55th St Se, Washington, DC 20019-6564

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