Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

S. Barry Diznoff, MD

Diagnostic Radiology Physician in Hockessin, DE · enumerated 2006.

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

National Provider Identifier

1649239427

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Registry record

Entity type Individual (Type 1)

Name S. Barry Diznoff

Credential MD

Sex Male

Practice address 5936 Limestone Rd, Suite 301, Hockessin, DE, 19707

Phone (302) 234-5800

Fax (302) 234-2380

Enumeration date Mar 21, 2006

Last updated in NPPES Feb 7, 2013

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License C1-0000615 (DE) 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
300067081	Other	-	RAILROAD MEDICARE
0000111101	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

Is NPI 1649239427 active?

Yes, as of the latest NPPES snapshot, NPI 1649239427 is active (record last updated 2013-02-07).

How do I verify S. Diznoff's NPI record?

Cross-check NPI 1649239427 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-02-07.