Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MARY MATTHEOS PHYSICIAN P.C.
NPI 1245426550
Internal Medicine in Lindenhurst, NY

Active since September 20, 2007
350 W MONTAUK HWY, LINDENHURST, NY 11757(631) 226-0388 Get Directions Write a Review

NPPES record last updated: July 14, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 14, 2026, Jul 10, 2026, Mar 15, 2023 (3 updates tracked since 2023).

About Mary Mattheos Physician P.c. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARY MATTHEOS PHYSICIAN P.C. (NPI 1245426550) is a healthcare organization registered as an internal medicine in Lindenhurst, New York and active in the NPI registry since September 2007. The organization lists Mary Mattheos, Doctor, as its authorized official.

NPPES Registry Identity

NPI1245426550
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameMARY MATTHEOS PHYSICIAN P.C.
Location Address350 W MONTAUK HWYLindenhurst, NY 11757-5630
Mailing Address350 W Montauk HwyLindenhurst, NY 11757-5630 · (631) 226-0388
Organization SubpartNo
Authorized OfficialMary MattheosDoctor · (631) 956-6002
Enumeration DateSeptember 20, 2007
Last NPPES UpdateJuly 14, 20263 updates tracked since enumeration
NPPES CertifiedJuly 14, 2026
NPI 1245426550 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedPhysical Medicine & RehabilitationTaxonomy 208100000X
Also ListedPhysical TherapistTaxonomy 225100000X
350 W MONTAUK HWY, Lindenhurst, NY 11757

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Physical Therapist
350 W MONTAUK HWY
LINDENHURST, NY 11757
Physician Assistant
350 W MONTAUK HWY
LINDENHURST, NY 11757
Physician Assistant (Medical)
350 W MONTAUK HWY
LINDENHURST, NY 11757
Chiropractor (Neurology)
350 W MONTAUK HWY
LINDENHURST, NY 11757
Internal Medicine
350 W MONTAUK HWY
LINDENHURST, NY 11757

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mary Mattheos Physician P.C.'s NPI number?

The NPI number for Mary Mattheos Physician P.C. is 1245426550. It was assigned to this organization in the NPPES registry on September 20, 2007.

Where is Mary Mattheos Physician P.C. located?

Mary Mattheos Physician P.C. is located at 350 W Montauk Hwy, Lindenhurst, NY 11757. The listed phone number is (631) 226-0388.

What is Mary Mattheos Physician P.C.'s specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Mary Mattheos Physician P.C. was last updated on July 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.