NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Mary B. Lelwica, PH.D.

Clinical Psychologist in Landenberg, PA · enumerated 2007.

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

National Provider Identifier

1124148960

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Mary B. Lelwica
Credential PH.D.
Sex Female
Practice address Landenberg, PA, 19350
Phone (610) 274-0641
Fax (610) 274-0351
Enumeration date Mar 29, 2007
Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PS004939L (PA) Primary
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

Other identifiers

Identifier Type State Issuer
206413 Other PA COMPSYCH
112680 Other PA VALUE OPTIONS
11447341 Other PA CAQH
00004467874 Other PA AETNA
0003720 Other PA COM. CARE BEHAVIORAL HEAL
0332164000 Other PA IBC
V458L Other PA EMPIRE
61-38877 Other PA UNITED BEHAVIORAL HEALTHC

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 Mary Lelwica?
The National Provider Identifier (NPI) for Mary Lelwica is 1124148960, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mary Lelwica practice?
The practice location on file with NPPES is in Landenberg, PA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

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