Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Margaret L. Mclain, NP-C

Family Nurse Practitioner in Orange, CA · enumerated 2007.

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

National Provider Identifier

1578601282

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Registry record

Entity type Individual (Type 1)

Name Margaret L. Mclain

Credential NP-C

Sex Female

Practice address 2901 E Katella Ave, Orange, CA, 92867

Phone (949) 209-5775

Fax (949) 209-5542

Enumeration date Feb 2, 2007

Last updated in NPPES Feb 20, 2026

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 95028774 (CA) Primary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License NP784A (ID) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License NP784A (ID) Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License NP-784A (ID) Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 201603073NP-PP (OR) Secondary

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 Margaret Mclain?

The National Provider Identifier (NPI) for Margaret Mclain is 1578601282, a Type 1 (individual) record in the CMS NPPES registry.

Where does Margaret Mclain practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-20.