Massis Speech & Language PLLC
NPI 1457227670 · Speech-Language Pathologist · Herndon, VA
Massis Speech & Language PLLC is a Speech-Language Pathologist organization in Herndon, VA (NPI 1457227670).
Provider details
- NPI number
- 1457227670
- Entity type
- Organization
- Primary specialty
- Speech-Language PathologistSpeech, Language and Hearing Service Providers
- Organization subpart
- No
- Authorized official
- Petra Massis, Owner(571) 329-2658
Specialties & taxonomies
Speech, Language and Hearing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2025-10-14
- Last updated
- 2025-10-14
- Certified
- 2025-10-14
Frequently asked questions
- What is Massis Speech & Language PLLC's NPI number?
- Massis Speech & Language PLLC's National Provider Identifier (NPI) is 1457227670, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Massis Speech & Language PLLC?
- Massis Speech & Language PLLC is classified in the NPPES registry as Speech-Language Pathologist (Speech, Language and Hearing Service Providers).
- Where is Massis Speech & Language PLLC located?
- Massis Speech & Language PLLC's practice location on file with NPPES is 209 Elden St Ste 204, Herndon, VA 20170-4846.
- What is Massis Speech & Language PLLC's phone number?
- The practice phone number listed in the NPPES registry for Massis Speech & Language PLLC is (571) 329-2658.
- Who is the authorized official for Massis Speech & Language PLLC?
- The authorized official listed on Massis Speech & Language PLLC's NPPES record is Petra Massis, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Massis Speech & Language PLLC's NPI active?
- Yes — Massis Speech & Language PLLC's NPI (1457227670) is active in the NPPES registry as of the last update on 2025-10-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.