Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Mary Elizabeth Marcinkowski, P.T.

Physical Therapist in Portsmouth, NH · enumerated 2009.

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

National Provider Identifier

1811224306

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Registry record

Entity type Individual (Type 1)

Name Ms. Mary Elizabeth Marcinkowski

Credential P.T.

Sex Female

Practice address 1 Greenleaf Woods Dr, Suite 101, Portsmouth, NH, 03801

Phone (603) 319-8334

Fax (603) 431-2940

Enumeration date Nov 4, 2009

Last updated in NPPES Oct 8, 2014

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 0714 (NH) Primary

2251S0007X Sports Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 0714 (NH) Secondary

2251X0800X Orthopedic Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 0714 (NH) Secondary

PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation. About the PT credential

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

What is the NPI number for Mary Marcinkowski?

The National Provider Identifier (NPI) for Mary Marcinkowski is 1811224306, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mary Marcinkowski practice?

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

Other providers at this practice address

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Colleen Cook Counseling Psychologist · Portsmouth, NH NPI 1013046135 The Center for Bodies in Balance, LLC Physical Therapist · Portsmouth, NH NPI 1114145794 Kathleen G. Sawler, Licsw, LLC Mental Health Clinic/Center (Including Community Mental Health Center) · Portsmouth, NH NPI 1184866683 Sandra Montminy Physical Therapist · Portsmouth, NH NPI 1669600763 Doreen Gaulin Physical Therapist · Portsmouth, NH NPI 1255614046

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-10-08.