Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Leonard Nadong Lamsen, M.D.

Emergency Medicine Physician in Memphis, TN · enumerated 2007.

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

National Provider Identifier

1902006257

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Registry record

Entity type Individual (Type 1)

Name Leonard Nadong Lamsen

Credential M.D.

Sex Male

Practice address 3030 Covington Pike, Suite 100, Memphis, TN, 38128

Phone (901) 383-8889

Fax (901) 383-2245

Enumeration date Jul 24, 2007

Last updated in NPPES Apr 24, 2015

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License MD46106 (TN) Secondary

207VX0000X Obstetrics Physician Allopathic & Osteopathic Physicians · License MD46106 (TN) Secondary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License MD46106 (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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Leonard Lamsen?

Leonard Lamsen is registered in NPPES with the primary taxonomy of Emergency Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-04-24.