NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

John Joseph Danyo Jr, M.D.

Specialist in Wilmington, DE · enumerated 2007 · authorized official John Danyo, MD.

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

National Provider Identifier

1336349208

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name John Joseph Danyo Jr, M.D.
Practice address 4001 Kennett Pike Ste 234, Wilmington, DE, 19807
Phone (302) 888-0508
Fax (302) 888-0509
Enumeration date Jul 19, 2007
Last updated in NPPES Apr 26, 2018

Taxonomy & classification

174400000X Specialist Other Service Providers · License C10005578 (DE) Primary

Authorized official

Name John Danyo
Title MD
Phone (302) 888-0508

Other identifiers

Identifier Type State Issuer
0000939701 Medicaid DE -

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 a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.
What type of organization is John Joseph Danyo Jr, M.D.?
John Joseph Danyo Jr, M.D. is registered in NPPES as a Specialist (its primary provider taxonomy).

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-04-26.