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

Elizabeth Anne Summerhayes, R.N.,N.P.

Adult Health Nurse Practitioner in Lafayette, CA · enumerated 2016.

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

National Provider Identifier

1285182550

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Registry record

Entity type Individual (Type 1)

Name Elizabeth Anne Summerhayes

Credential R.N.,N.P.

Sex Female

Practice address Lafayette, CA, 94549

Phone (408) 315-9738

Enumeration date Sep 15, 2016

Last updated in NPPES Sep 29, 2016

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

Taxonomy & licenses

363LC1500X Community Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License M250673 (CA) Secondary

363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License M250673 (CA) Primary

363LW0102X Women's Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License M250673 (CA) Secondary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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

How do I verify Elizabeth Summerhayes's NPI record?

Cross-check NPI 1285182550 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1285182550 active?

Yes, as of the latest NPPES snapshot, NPI 1285182550 is active (record last updated 2016-09-29).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-09-29.