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

Holly A. Zanville, LLC

Organization Clinical Psychologist · NPI 1447692843

Holly A. Zanville, LLC provides Clinical Psychologist services in Rockville, Maryland. Licensed in Maryland. Registered with an NPI since 2013.

Licensed in
MD
In the registry since
2013
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

4402 Bestor Dr
Rockville, MD 20853-2137 Not confirmed with CMS for 13 years — call before visiting
Phone: (301) 678-9594
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 04805 (MD)

Record details

NPI number1447692843
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Holly Zanville — Psychologist · (301) 678-9594
NPI enumeratedJuly 25, 2013
Last updated in NPPESJuly 25, 2013
Mailing address4402 Bestor Dr, Rockville, MD 20853-2137

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