Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Douglas N Sullivant, MD

Neurology Physician in Quincy, IL · enumerated 2006.

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

National Provider Identifier

1467425603

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Douglas N Sullivant

Credential MD

Sex Male

Practice address 1025 Maine St, Quincy, IL, 62301

Phone (217) 222-6550

Enumeration date Feb 8, 2006

Last updated in NPPES Feb 12, 2010

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 036091522 (IL) 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
036091522	Medicaid	IL	-

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 Douglas Sullivant practice?

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

What is the NPI number for Douglas Sullivant?

The National Provider Identifier (NPI) for Douglas Sullivant is 1467425603, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-02-12.