Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Clifton Delos Smith Jr., M.D.

Internal Medicine Physician in Vassalboro, ME · enumerated 2006.

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

National Provider Identifier

1578529327

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Registry record

Entity type Individual (Type 1)

Name Clifton Delos Smith Jr.

Credential M.D.

Sex Male

Practice address 905 Main St, Vassalboro, ME, 04989

Phone (207) 873-6173

Fax (207) 873-4514

Enumeration date Apr 21, 2006

Last updated in NPPES Jan 12, 2011

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 011712 (ME) 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
000927	Other	ME	ANTHEM
1041270	Other	-	AETNA HMO
110084669	Other	-	RAILROAD MEDICARE
5201627	Other	-	AETNA NON-HMO
D78788	Other	-	HARVARD PILGRIM

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 Clifton Smith practice?

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

What is the NPI number for Clifton Smith?

The National Provider Identifier (NPI) for Clifton Smith is 1578529327, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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John Burke Internal Medicine Physician · Vassalboro, ME NPI 1588620330

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-01-12.