Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John Douglas Sadoff, M.D.

Q: What is the NPI number for John Sadoff?

The National Provider Identifier (NPI) for John Sadoff is 1619973765, a Type 1 (individual) record in the CMS NPPES registry.

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Swansea, IL · enumerated 2005.

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

National Provider Identifier

1619973765

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Registry record

Entity type Individual (Type 1)

Name Dr. John Douglas Sadoff

Credential M.D.

Sex Male

Practice address 9 Park Pl, Swansea, IL, 62226

Phone (618) 233-5722

Fax (618) 233-7069

Enumeration date Jun 23, 2005

Last updated in NPPES Mar 7, 2023

Taxonomy & licenses

208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License 036110178 (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
011619579	Other	MO	BNDD
036110178	Medicaid	IL	-
036071034	Other	IL	SUBSTANCE CONTROL
2003022258	Other	MO	LICENSE
036110178	Other	IL	LICENSE

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 John Sadoff practice?

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

What is the NPI number for John Sadoff?

The National Provider Identifier (NPI) for John Sadoff is 1619973765, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Bill Daily Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Swansea, IL NPI 1275539140 Kenneth Clements Registered Nurse First Assistant · Swansea, IL NPI 1215934757 David Cooper Registered Nurse First Assistant · Swansea, IL NPI 1598762999 Keith Hurst Registered Nurse First Assistant · Swansea, IL NPI 1962730341

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.