Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Teresa Marie Lum, CRNP

Pediatric Nurse Practitioner in Hagerstown, MD · enumerated 2006.

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

National Provider Identifier

1245260355

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Registry record

Entity type Individual (Type 1)

Name Mrs. Teresa Marie Lum

Credential CRNP

Sex Female

Practice address 265 Mill St, Suite 800, Hagerstown, MD, 21740

Phone (240) 513-4595

Fax (240) 513-4596

Enumeration date Jul 4, 2006

Last updated in NPPES Sep 30, 2021

Taxonomy & licenses

363LP0200X Pediatric Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License R109055 (MD) Primary

Other identifiers

Identifier	Type	State	Issuer
807602200	Medicaid	MD	-

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

Is NPI 1245260355 active?

Yes, as of the latest NPPES snapshot, NPI 1245260355 is active (record last updated 2021-09-30).

How do I verify Teresa Lum's NPI record?

Cross-check NPI 1245260355 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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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-09-30.