Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Jeffrey David Duncan, M.D.

Hospitalist Physician in Daytona Beach, FL · enumerated 2012.

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

National Provider Identifier

1639436066

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Registry record

Entity type Individual (Type 1)

Name Dr. Jeffrey David Duncan

Credential M.D.

Sex Male

Practice address 303 N Clyde Morris Blvd, Daytona Beach, FL, 32114

Phone (386) 226-2285

Fax (386) 239-2354

Enumeration date Apr 23, 2012

Last updated in NPPES Mar 3, 2016

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License ME118171 (FL) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License ME118171 (FL) Primary

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

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 the NPI number for Jeffrey Duncan?

The National Provider Identifier (NPI) for Jeffrey Duncan is 1639436066, a Type 1 (individual) record in the CMS NPPES registry.

Where does Jeffrey Duncan practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-03-03.