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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Joseph S. Iobst, MD

Hematology & Oncology Physician in Sevierville, TN · enumerated 2006.

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

National Provider Identifier

1366407819

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Registry record

Entity type Individual (Type 1)
Name Joseph S. Iobst
Credential MD
Sex Male
Practice address Sevierville, TN, 37862
Phone (865) 908-9888
Enumeration date Apr 19, 2006
Last updated in NPPES Jan 20, 2026

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 0101233360 (VA) Secondary
207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 74005 (TN) Primary
207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License ME102966 (FL) Secondary
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.

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Frequently asked questions

Where does Joseph Iobst practice?
The practice location on file with NPPES is in Sevierville, TN. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Joseph Iobst?
The National Provider Identifier (NPI) for Joseph Iobst is 1366407819, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-01-20.