Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Douglas Dothager, MD

Pulmonary Disease Physician in Belleville, IL · enumerated 2005.

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

National Provider Identifier

1871599738

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Registry record

Entity type Individual (Type 1)

Name Douglas Dothager

Credential MD

Sex Male

Practice address 4600 Memorial Dr Ste 200, Belleville, IL, 62226

Phone (618) 233-2220

Fax (618) 233-2555

Enumeration date Jun 24, 2005

Last updated in NPPES Mar 3, 2021

Taxonomy & licenses

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License 036091795 (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
036091795	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

What is the NPI number for Douglas Dothager?

The National Provider Identifier (NPI) for Douglas Dothager is 1871599738, a Type 1 (individual) record in the CMS NPPES registry.

Where does Douglas Dothager practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-03-03.