Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Mark Anthony Parker, PMHNP-BC

Psychiatric/Mental Health Nurse Practitioner in Sterling, VA · enumerated 2009 · practices at Loudoun Medical Group, PC.

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

National Provider Identifier

1710214721

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Registry record

Entity type Individual (Type 1)

Name Mr. Mark Anthony Parker

Credential PMHNP-BC

Sex Male

Practice address 22611 Markey Ct Ste 114-I, Sterling, VA, 20166

Phone (703) 249-4828

Fax (703) 281-6888

Enumeration date Nov 11, 2009

Last updated in NPPES Jun 30, 2026

Taxonomy & licenses

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 0024186581 (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 1710214721 active?

Yes, as of the latest NPPES snapshot, NPI 1710214721 is active (record last updated 2026-06-30).

How do I verify Mark Parker's NPI record?

Cross-check NPI 1710214721 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Loudoun Medical Group, PC Psychologist · Sterling, VA NPI 1255278099

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-30.