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Dr. John Delmar Siddens, D.O.

Ophthalmology Physician in Greenville, SC · enumerated 2006.

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

National Provider Identifier

1407826993

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Registry record

Entity type Individual (Type 1)
Name Dr. John Delmar Siddens
Credential D.O.
Sex Male
Practice address 104 Simpson Street, Greenville, SC, 29605
Phone (864) 522-3900
Fax (864) 522-3909
Enumeration date Jan 25, 2006
Last updated in NPPES May 12, 2021

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 291 (SC) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier Type State Issuer
180018447 Other SC MEDICARE RAILROAD
2556148003 Other SC CIGNA PROVIDER NUMBER
4232647 Other SC AETNA PROVIDER NUMBER
TL0727 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.

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Frequently asked questions

Where does John Siddens practice?
The practice location on file with NPPES is in Greenville, SC. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for John Siddens?
The National Provider Identifier (NPI) for John Siddens is 1407826993, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-05-12.