Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Erich Allen, D.C.

Chiropractor in South Portland, ME · enumerated 2005 · practices at Advantage Chiropractic P A.

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

National Provider Identifier

1790768182

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Erich Allen

Credential D.C.

Sex Male

Practice address 894 Broadway, South Portland, ME, 04106

Phone (207) 699-2226

Fax (207) 699-2229

Enumeration date Nov 21, 2005

Last updated in NPPES Dec 12, 2012

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License CR1365 (ME) 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
M204600	Other	ME	CIGNA
352582	Other	ME	HARVARD PILGRIM
522405696	Other	ME	MED NET SYSTEMS
177050000	Medicaid	ME	-
522405696	Other	ME	HEALTH PLANS INC
640621	Other	ME	UNITED HEALTHCARE
2193260	Other	ME	FIRST HEALTH CARE SYSTEMS
4639291	Other	ME	AETNA
522405696	Other	ME	PRIVATE HEALTHCARE SYSTEM
522405696	Other	ME	PREFERREDONE ADMIN SERVIC
022415	Other	ME	ANTHEM

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

What specialty is Mark Allen?

Mark Allen 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.

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.

Other providers at this practice address

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Advantage Chiropractic P A Chiropractor · South Portland, ME NPI 1841417730

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-12-12.