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

Massis Speech & Language PLLC

Organization Speech-Language Pathologist · NPI 1457227670

Massis Speech & Language PLLC is a Speech-Language Pathologist in Herndon, Virginia. Registered with an NPI since 2025.

In the registry since
2025
What do these letters mean?
PLLC — Professional limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

209 Elden St Ste 204
Herndon, VA 20170-4846
Phone: (571) 329-2658
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Speech-Language Pathologist (primary) Taxonomy 235Z00000X

Record details

NPI number1457227670
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Petra Massis — Owner · (571) 329-2658
NPI enumeratedOctober 14, 2025
Last updated in NPPESOctober 14, 2025
Certification dateOctober 14, 2025
Mailing address450 Massachusetts Ave Nw Apt 904, Washington, DC 20001-6220

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