Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MARGARET LYDON
NPI 1801405063
Speech-Language Pathologist in Fairfax, VA

Q: What is Margaret Lydon's NPI number?

The NPI number for Margaret Lydon is 1801405063. It was assigned to this individual provider in the NPPES registry on July 23, 2020.

Q: What is Margaret Lydon's specialty?

The primary specialty registered for this NPI is Speech-Language Pathologist with taxonomy code 235Z00000X.

Q: When was this NPI record last updated?

The NPPES record for Margaret Lydon was last updated on August 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since July 23, 2020

3001 CHICHESTER LN, FAIRFAX, VA 22031(703) 208-8100 Get Directions Write a Review

NPPES record last updated: August 24, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Record update history: Aug 24, 2026, Jul 23, 2020 (2 updates tracked since 2020).

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About Margaret Lydon NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARGARET LYDON (NPI 1801405063) is an individual speech-language pathologist provider in Fairfax, Virginia, licensed in Virginia (2202011869) and active in the NPI registry since July 2020.

NPPES Registry Identity

NPI1801405063

Entity TypeIndividualFemale

Primary Taxonomy235Z00000X

Provider Legal NameMARGARET LYDON

Location Address3001 CHICHESTER LNFairfax, VA 22031-2113

Mailing Address6896 Laurel St Nw Apt 310Washington, DC 20012-2272 · (508) 315-2621

Phone(703) 208-8100

Sole ProprietorNo

Enumeration DateJuly 23, 2020

Last NPPES UpdateAugust 24, 20262 updates tracked since enumeration

NPPES CertifiedAugust 24, 2026

✔ NPI 1801405063 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpeech-Language PathologistSpeech, Language and Hearing Service Providers

Taxonomy Code235Z00000X

License✔ Licensed in VA · 2202011869

Definition

The speech-language pathologist is the professional who engages in clinical services, prevention, advocacy, education, administration, and research in the areas of communication and swallowing across the life span from infancy through geriatrics. Speech-language pathologists address typical and atypical impairments and disorders related to communication and swallowing in the areas of speech sound production, resonance, voice, fluency, language (comprehension and expression), cognition, and feeding and swallowing.

3001 CHICHESTER LN, Fairfax, VA 22031

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Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Margaret Lydon's NPI number?

The NPI number for Margaret Lydon is 1801405063. It was assigned to this individual provider in the NPPES registry on July 23, 2020.

Where is Margaret Lydon located?

Margaret Lydon practices at 3001 Chichester Ln, Fairfax, VA 22031. The listed phone number is (703) 208-8100.

What is Margaret Lydon's specialty?

The primary specialty registered for this NPI is Speech-Language Pathologist with taxonomy code 235Z00000X.

When was this NPI record last updated?

The NPPES record for Margaret Lydon was last updated on August 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.