Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Daniel F Niendorff, M.D.

Critical Care Medicine (Internal Medicine) Physician in Oak Ridge, TN · enumerated 2006.

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

National Provider Identifier

1700968732

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Registry record

Entity type Individual (Type 1)

Name Daniel F Niendorff

Credential M.D.

Sex Male

Practice address 990 Oak Ridge Tpke, Oak Ridge, TN, 37830

Phone (865) 835-1000

Enumeration date Oct 19, 2006

Last updated in NPPES Jan 2, 2024

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 49379 (TN) Secondary

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 49379 (TN) 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
Q000561	Medicaid	TN	-

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 Daniel Niendorff?

The National Provider Identifier (NPI) for Daniel Niendorff is 1700968732, a Type 1 (individual) record in the CMS NPPES registry.

Where does Daniel Niendorff practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-01-02.