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

Lawrence A Hammond, M.D.

Internal Medicine Physician in Hamilton, MT · enumerated 2005.

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

National Provider Identifier

1861477093

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Registry record

Entity type Individual (Type 1)

Name Lawrence A Hammond

Credential M.D.

Sex Male

Practice address Hamilton, MT, 59840

Phone (406) 363-5101

Fax (406) 363-7652

Enumeration date Dec 9, 2005

Last updated in NPPES Feb 13, 2014

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

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD00024927 (WA) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 5277 (MT) 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
1861477093	Medicaid	ID	-
1861477093	Medicaid	MT	-
1861477093	Medicaid	WA	-

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 Lawrence Hammond practice?

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

What is the NPI number for Lawrence Hammond?

The National Provider Identifier (NPI) for Lawrence Hammond is 1861477093, 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 2014-02-13.