Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Jill Ann Ham, NP-C

Family Nurse Practitioner in Leesburg, VA · enumerated 2007 · practices at Allergy Asthma and Sinus Center PC.

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

National Provider Identifier

1164611752

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Registry record

Entity type Individual (Type 1)

Name Mrs. Jill Ann Ham

Credential NP-C

Sex Female

Practice address 19465 Deerfield Ave Ste 101, Leesburg, VA, 20176

Phone (703) 726-9720

Fax (703) 726-9721

Enumeration date Oct 18, 2007

Last updated in NPPES Mar 26, 2024

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 71002526A (IN) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 0024173256 (VA) Primary

Other identifiers

Identifier	Type	State	Issuer
P00833898	Other	-	RAILROAD MEDICARE
200888840	Medicaid	IN	-

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 specialty is Jill Ham?

Jill Ham is registered in NPPES with the primary taxonomy of Family Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

Browse all →

Behnam Daghigh Allergy & Immunology Physician · Leesburg, VA NPI 1629045729 Allergy Asthma and Sinus Center PC Allergy & Immunology Physician · Leesburg, VA NPI 1316915796

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-03-26.