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

Dr. Mark D. Friedman, D.C.

Neurology Chiropractor in Swampscott, MA · enumerated 2006 · practices at Mark D. Friedman.

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

National Provider Identifier

1578521951

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark D. Friedman

Credential D.C.

Sex Male

Practice address Swampscott, MA, 01907

Phone (781) 581-7300

Fax (781) 581-1190

Enumeration date May 3, 2006

Last updated in NPPES Jun 27, 2012

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

Taxonomy & licenses

111NN0400X Neurology Chiropractor Chiropractic Providers · License 1452 (MA) 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
043243520	Other	MA	HARVARD PILGRIM
4400309	Other	MA	UNITED HEALTHCARE IND.
732774	Other	MA	TUFTS INDIVIDUAL
043243520	Other	MA	CIGNA INDIVIDUAL
043243520	Other	MA	CHICKERING INDIVIDUAL
043243520	Other	MA	DEFINITY INDIVIDUAL
043243520	Other	MA	GIC INDEMNITY IND.
043243520	Other	MA	US DEPARTMENT OF LABOR
781851	Other	MA	AETNA INDIVIDUAL

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

Where does Mark Friedman practice?

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

What is the NPI number for Mark Friedman?

The National Provider Identifier (NPI) for Mark Friedman is 1578521951, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Pheng Kouch Chiropractor · Swampscott, MA NPI 1659385623 Gerald Nastasia Orthopedic Chiropractor · Swampscott, MA NPI 1811089576 Joseph Kornfeld Neurology Chiropractor · Swampscott, MA NPI 1497821730 Jill Gibson Chiropractor · Swampscott, MA NPI 1003967001 Mark D. Friedman Neurology Chiropractor · Swampscott, MA NPI 1134541493

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-06-27.