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

Mary Lou Lyon, LCPC, LLC

Organization Professional Counselor · NPI 1811310238

Mary Lou Lyon, LCPC, LLC is a Professional Counselor in Rockville, Maryland. Licensed in Maryland. Registered with an NPI since 2014.

Licensed in
MD
In the registry since
2014
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

See every abbreviation used in this directory →

Practice location Address checks out

966 Hungerford Dr Ste 18B
Rockville, MD 20850-1714
Phone: (301) 762-4100
Show map & directions

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

Specialties & licences

Professional Counselor (primary) Taxonomy 101YP2500X · Licence LC1509 (MD)

Record details

NPI number1811310238
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Mary Lyon — Owner · (301) 762-4100
NPI enumeratedJanuary 22, 2014
Last updated in NPPESJanuary 22, 2014
Mailing address966 Hungerford Dr, Suite 18b, Rockville, MD 20850-1714

Other providers in Rockville