NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stephen Justin Szawlewicz, MD

Cardiovascular Disease Physician in Browns Mills, NJ · enumerated 2006 · practices at Chester R Smialowicz MD LLC.

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

National Provider Identifier

1023103884

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Registry record

Entity type Individual (Type 1)
Name Stephen Justin Szawlewicz
Credential MD
Sex Male
Practice address 200 Trenton Road, Browns Mills, NJ, 08015
Phone (609) 893-6611
Fax (609) 893-6038
Enumeration date Oct 4, 2006
Last updated in NPPES Jan 23, 2012

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MA070998 (NJ) Secondary
207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 25MA07099800 (NJ) 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
3082253 Other - CIGNA
8325901 Medicaid NJ -
3772967 Other - AETNA US-HEALTHCARE
919655 Other - AMERIHEALTH PPO
010006211 01 Other - AMERICHOICE
0859769000 Other - AMERIHEALTH, HMO, KEYSTONE, IBC
60014440 Other - HORIZON NJ HEALTH
1791436 Other - UNITED HEALTH CARE
P2199116 Other - OXFORD HEALTH PLAN

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

What specialty is Stephen Szawlewicz?
Stephen Szawlewicz is registered in NPPES with the primary taxonomy of Cardiovascular Disease Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-01-23.