Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Edward Z. Walworth, MD

Specialist in Lewiston, ME · enumerated 2005 · practices at Nephrology Associates of Central Maine.

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

National Provider Identifier

1023004496

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Registry record

Entity type Individual (Type 1)

Name Dr. Edward Z. Walworth

Credential MD

Sex Male

Practice address 710 Main St, Lewiston, ME, 04240

Phone (207) 783-1449

Fax (207) 777-3865

Enumeration date Sep 21, 2005

Last updated in NPPES Jan 28, 2009

Taxonomy & licenses

174400000X Specialist Other Service Providers Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
240490099	Medicaid	ME	-

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 Edward Walworth's NPI record?

Cross-check NPI 1023004496 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1023004496 active?

Yes, as of the latest NPPES snapshot, NPI 1023004496 is active (record last updated 2009-01-28).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-01-28.