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

Dr. Michael T Clark, D. C.

Chiropractor in Rochester, NH · enumerated 2006.

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

National Provider Identifier

1275596041

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael T Clark

Credential D. C.

Sex Male

Practice address Rochester, NH, 03867

Phone (603) 332-8989

Fax (603) 332-8989

Enumeration date Apr 11, 2006

Last updated in NPPES Jan 29, 2016

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

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 11809510184A (NH) Primary

DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Other identifiers

Identifier	Type	State	Issuer
19394	Other	NH	MATTHEW THORNTON HEALTH P
7802 OUT OF STATE	Other	NJ	ANTHEM NJ
80705	Other	NH	GREAT WEST HC
AA44982	Other	NH	HPHC
63665	Other	-	GREAT WEST NA
0508438Y0NH01	Other	NH	ANTHEM
453731	Other	NH	AETNA
30001768	Medicaid	NH	-
3228	Other	NH	CIGNA

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 Michael Clark?

Michael Clark is registered in NPPES with the primary taxonomy of Chiropractor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-01-29.