NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Lewin, Fagen & Lown, M.D. P.C.

Internal Medicine Physician in Commack, NY · enumerated 2006 · authorized official Jonathan Lown, President.

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

National Provider Identifier

1528134426

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Lewin, Fagen & Lown, M.D. P.C.
Practice address 2171 Jericho Tpke Ste 100, Commack, NY, 11725
Phone (631) 864-4499
Fax (631) 864-2693
Enumeration date Nov 24, 2006
Last updated in NPPES Aug 5, 2026

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Primary
207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians Secondary
332B00000X Durable Medical Equipment & Medical Supplies Suppliers Secondary

Authorized official

Name Jonathan Lown
Title President
Phone (631) 343-7242

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 Lewin, Fagen & Lown, M.D. P.C.?
The NPI for Lewin, Fagen & Lown, M.D. P.C. is 1528134426, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Lewin, Fagen & Lown, M.D. P.C.?
NPPES lists Jonathan Lown (President) as the authorized official for this organization.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-08-05.