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LEWIN, FAGEN & LOWN, M.D. P.C.
NPI 1528134426
Internal Medicine in Commack, NY

Active since November 24, 2006CLIA 33D0156638 · Waiver
2171 JERICHO TPKE STE 100, COMMACK, NY 11725(631) 864-4499(631) 864-2693 Get Directions Write a Review

NPPES record last updated: August 5, 2026. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Aug 5, 2026, Apr 13, 2020 (2 updates tracked since 2020).

About Lewin, Fagen & Lown, M.d. P.c. NPPES

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

LEWIN, FAGEN & LOWN, M.D. P.C. (NPI 1528134426) is a healthcare organization registered as an internal medicine in Commack, New York and active in the NPI registry since November 2006. The organization holds a CLIA Waiver certificate valid through April 14, 2027 and lists Jonathan S. Lown, President, as its authorized official.

NPPES Registry Identity

NPI1528134426
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameLEWIN, FAGEN & LOWN, M.D. P.C.
Location Address2171 JERICHO TPKE STE 100Commack, NY 11725-2900
Mailing Address2171 Jericho Tpke Ste 100Commack, NY 11725-2900 · (631) 343-7242 · Fax (631) 343-7245
Phone(631) 864-4499
Fax(631) 864-2693
Organization SubpartNo
Authorized OfficialJonathan S. LownPresident · (631) 343-7242
Enumeration DateNovember 24, 2006
Last NPPES UpdateAugust 5, 20262 updates tracked since enumeration
NPPES CertifiedAugust 5, 2026
✔ NPI 1528134426 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 ListedInternal Medicine · Sleep MedicineTaxonomy 207RS0012X
Also ListedDurable Medical Equipment & Medical SuppliesTaxonomy 332B00000X
2171 JERICHO TPKE STE 100, Commack, NY 11725
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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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 33D0156638

Lewin, Fagen & Lown, MD PC · Commack, NY
Active · expires Apr 14, 2027
CLIA Number33D0156638
Laboratory TypePhysician Office
Certificate Effective DateApril 15, 2025
Certificate Expiration DateApril 14, 2027
Laboratory DirectorDr. Jonathan S. Lown
Laboratory Phone(631) 343-7242
Laboratory LocationLewin, Fagen & Lown, MD PC2171 Jericho Turnpike, Suite 100, Commack, NY 11725
CLIA data matches this NPI record on: Phone
This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES 2

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

SURGICAL SPECIALIST OF LONG ISLAND, PC
Surgery
2171 JERICHO TPKE STE 100
COMMACK, NY 11725
Suffolk County (631) 486-5030
DR. TARA DAWN MARTINEZ DO
Colon & Rectal Surgery
2171 JERICHO TPKE STE 100
COMMACK, NY 11725
Suffolk County (631) 486-5030

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 Lewin, Fagen & Lown, M.D. P.C.'s NPI number?

The NPI number for Lewin, Fagen & Lown, M.D. P.C. is 1528134426. It was assigned to this organization in the NPPES registry on November 24, 2006.

Where is Lewin, Fagen & Lown, M.D. P.C. located?

Lewin, Fagen & Lown, M.D. P.C. is located at 2171 Jericho Tpke Ste 100, Commack, NY 11725. The listed phone number is (631) 864-4499.

What is Lewin, Fagen & Lown, M.D. P.C.'s specialty?

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

Does Lewin, Fagen & Lown, M.D. P.C. hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 33D0156638) is associated with this NPI, valid through April 14, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Lewin, Fagen & Lown, M.D. P.C. was last updated on August 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.