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

Ms. Margaret Mary Hamilton, R.N, A.P.N.

Family Nurse Practitioner in Columbia, TN · enumerated 2006.

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

National Provider Identifier

1548376288

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Registry record

Entity type Individual (Type 1)

Name Ms. Margaret Mary Hamilton

Credential R.N, A.P.N.

Sex Female

Practice address Columbia, TN, 38401

Phone (931) 490-6332

Fax (931) 380-3364

Enumeration date Aug 23, 2006

Last updated in NPPES Nov 5, 2021

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

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License APN0000005974 (TN) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN credential

Other identifiers

Identifier	Type	State	Issuer
APN0000005974	Other	TN	ADVANCED PRACTICE NURSE
RN0000067596	Other	TN	REGISTERED NURSE

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 Margaret Hamilton?

The National Provider Identifier (NPI) for Margaret Hamilton is 1548376288, a Type 1 (individual) record in the CMS NPPES registry.

Where does Margaret Hamilton practice?

The practice location on file with NPPES is in Columbia, 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 2021-11-05.