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

Dr. Mark Alleyn, CRNA, DNP

Q: What is the NPI number for Mark Alleyn?

The National Provider Identifier (NPI) for Mark Alleyn is 1659756138, a Type 1 (individual) record in the CMS NPPES registry.

Certified Registered Nurse Anesthetist in Fort Belvoir, VA · enumerated 2015.

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

National Provider Identifier

1659756138

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Alleyn

Credential CRNA, DNP

Sex Male

Practice address Fort Belvoir, VA, 22060

Phone (571) 231-3224

Enumeration date Jul 24, 2015

Last updated in NPPES Aug 22, 2019

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

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 28179750A (IN) Secondary

163W00000X Registered Nurse Nursing Service Providers · License 0001287876 (VA) Secondary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 103831 (GA) Secondary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 0024177947 (VA) Primary

CRNA · Certified Registered Nurse Anesthetist: An advanced practice nurse specializing in anesthesia care. About the CRNA credential

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Mark Alleyn?

The National Provider Identifier (NPI) for Mark Alleyn is 1659756138, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mark Alleyn practice?

The practice location on file with NPPES is in Fort Belvoir, VA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Helen Johnson Family Medicine Physician · Fort Belvoir, VA NPI 1972507887 Melissa Schott Clinical Social Worker · Ft Belvoir, VA NPI 1053318204 Christopher Kurtz Sports Medicine (Orthopaedic Surgery) Physician · Fort Belvoir, VA NPI 1548261597 Todd Lauby Optometrist · Ft Belvoir, VA NPI 1942202924 Katie Kotopoulos Family Nurse Practitioner · Fort Belvoir, VA NPI 1053303651 James Ellzy Family Medicine Physician · Fort Belvoir, VA NPI 1417949736 Thomas Cantilina Family Medicine Physician · Fort Belvoir, VA NPI 1134111453 Catherine Seangio Hospitalist Physician · Fort Belvoir, VA NPI 1922091669

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-08-22.