NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. James Edward Ethington, MD

Dermatology Physician in Greenfield, WI · enumerated 2006 · practices at Layton Avenue Dermatology Associates, S.C..

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

National Provider Identifier

1770546053

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. James Edward Ethington
Credential MD
Sex Male
Practice address 2923 W Layton Ave, Greenfield, WI, 53221
Phone (414) 281-0712
Fax (414) 281-3466
Enumeration date Apr 8, 2006
Last updated in NPPES Apr 18, 2011

Taxonomy & licenses

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 22197-020 (WI) Primary
207NI0002X Clinical & Laboratory Dermatological Immunology Physician Allopathic & Osteopathic Physicians · License 22197-020 (WI) Secondary
207NS0135X Procedural Dermatology Physician Allopathic & Osteopathic Physicians · License 22197-020 (WI) Secondary
207ND0101X MOHS-Micrographic Surgery Physician Allopathic & Osteopathic Physicians · License 22197-020 (WI) Secondary
207NP0225X Pediatric Dermatology Physician Allopathic & Osteopathic Physicians · License 22197-020 (WI) Secondary
207ND0900X Dermatopathology Physician Allopathic & Osteopathic Physicians · License 22197-020 (WI) Secondary
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
30257400 Medicaid WI -

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 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.
What specialty is James Ethington?
James Ethington is registered in NPPES with the primary taxonomy of Dermatology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-04-18.