Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Margaret Zalewski, MD

Neurology Physician in Phila, PA · enumerated 2006.

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

National Provider Identifier

1033130737

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Registry record

Entity type Individual (Type 1)

Name Margaret Zalewski

Credential MD

Sex Female

Practice address 7602 Central Ave, Ste 203, Phila, PA, 19111

Phone (215) 342-6481

Fax (215) 722-2635

Enumeration date Jul 21, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License MD037677E (PA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Margaret Zalewski?

Margaret Zalewski is registered in NPPES with the primary taxonomy of Neurology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Abegael Lorico Obstetrics & Gynecology Physician · Phila, PA NPI 1205812849 Robert Auerbach Gynecology Physician · Phila, PA NPI 1861478034 Neil Isdaner Specialist · Philadelphia, PA NPI 1093783409 Comprehensive Internal Medicine Associates Geriatric Medicine (Internal Medicine) Physician · Phila, PA NPI 1326094384 Temple Neurology Neurology Physician · Philadelphia, PA NPI 1497776140 Robert Shore Internal Medicine Physician · Phila, PA NPI 1013020304 Courtney Snyder Internal Medicine Physician · Phila, PA NPI 1831202126 Jennifer Erickson Gerontology Nurse Practitioner · Philadelphia, PA NPI 1992856413

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.