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

Dr. Nathaniel Clifford Klein, M.D., M.B.A., M.S.

Obstetrics & Gynecology Physician in Morristown, TN · enumerated 2012.

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

National Provider Identifier

1780949297

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Registry record

Entity type Individual (Type 1)

Name Dr. Nathaniel Clifford Klein

Credential M.D., M.B.A., M.S.

Sex Male

Practice address Morristown, TN, 37814

Phone (423) 492-7125

Enumeration date Jul 10, 2012

Last updated in NPPES Jun 7, 2026

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

Taxonomy & licenses

207VG0400X Gynecology Physician Allopathic & Osteopathic Physicians · License MD0000060789 (TN) Secondary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 60789 (TN) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Nathaniel Klein practice?

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

What is the NPI number for Nathaniel Klein?

The National Provider Identifier (NPI) for Nathaniel Klein is 1780949297, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-07.