Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Maria Gracia Macdiarmid

Family Nurse Practitioner in Ashburn, VA · enumerated 2016.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1407217979

Verified

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Registry record

Entity type Individual (Type 1)

Name Maria Gracia Macdiarmid

Sex Female

Practice address Ashburn, VA, 20148

Phone (347) 761-7200

Enumeration date Mar 11, 2016

Last updated in NPPES Apr 18, 2016

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 0024173384 (VA) Primary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Is NPI 1407217979 active?

Yes, as of the latest NPPES snapshot, NPI 1407217979 is active (record last updated 2016-04-18).

How do I verify Maria Gracia Macdiarmid's NPI record?

Cross-check NPI 1407217979 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Joanna Bock Internal Medicine Physician · Ashburn, VA NPI 1780728188 Amr Behiri Internal Medicine Physician · Ashburn, VA NPI 1154588580 Virginia Internal Medicine Inc Internal Medicine Physician · Ashburn, VA NPI 1740525245 Noelle Pierson Family Nurse Practitioner · Ashburn, VA NPI 1982003091 Sarah Brown Family Nurse Practitioner · Ashburn, VA NPI 1538537196 Virginia Geriatrics, PC Geriatric Medicine (Internal Medicine) Physician · Ashburn, VA NPI 1346750320 Hayley Arcadipane Family Nurse Practitioner · Ashburn, VA NPI 1982227724 Jessica Gilleo Nurse Practitioner · Ashburn, VA NPI 1558944959

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-04-18.