Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Christopher R Sidden, M.D.

Diagnostic Radiology Physician in Newark, DE · enumerated 2006.

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

National Provider Identifier

1104872837

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Registry record

Entity type Individual (Type 1)

Name Christopher R Sidden

Credential M.D.

Sex Male

Practice address 40 Polly Drummond Hill Rd Bldg 4, Newark, DE, 19711

Phone (585) 218-8012

Fax (585) 218-8099

Enumeration date May 25, 2006

Last updated in NPPES Jun 25, 2025

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 0101244741 (VA) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License C141328 (CA) 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
GP5074	Medicaid	SC	-
GP5278	Medicaid	SC	-
GP5275	Medicaid	SC	-
329326	Medicaid	SC	-
GP1821	Medicaid	SC	-

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

Where does Christopher Sidden practice?

The practice location on file with NPPES is in Newark, DE. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Christopher Sidden?

The National Provider Identifier (NPI) for Christopher Sidden is 1104872837, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-06-25.