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

Dr. Marta Maczaj, M.D.

Psychiatry Physician in Port Jefferson, NY · enumerated 2006.

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

National Provider Identifier

1780625681

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Registry record

Entity type Individual (Type 1)
Name Dr. Marta Maczaj
Credential M.D.
Sex Female
Practice address Port Jefferson, NY, 11777
Phone (631) 474-6277
Fax (631) 474-6761
Enumeration date Jun 10, 2006
Last updated in NPPES Dec 29, 2021

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

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 168448 (NY) 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
0004336633 Other NY AETNA
449N43 Other NY EMPIRE BC.BS
01255825 Medicaid NY -

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 Marta Maczaj practice?
The practice location on file with NPPES is in Port Jefferson, NY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Marta Maczaj?
The National Provider Identifier (NPI) for Marta Maczaj is 1780625681, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-29.