Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. William J Krowinski Jr., MSW PHD
Social Worker in Erie, PA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1831248822
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Registry record
Entity type Individual (Type 1)
Name Dr. William J Krowinski Jr.
Credential MSW PHD
Sex Male
Practice address 3939 W Ridge Rd, Bldg B, 2nd Floor, Erie, PA, 16506
Phone (814) 835-1122
Fax (814) 838-7743
Enumeration date Jan 9, 2007
Last updated in NPPES Aug 21, 2014
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License CW000854L (PA) Primary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 000099480 | Other | PA | HIGHMARK BCBS |
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.
Frequently asked questions
What is the NPI number for William Krowinski?
The National Provider Identifier (NPI) for William Krowinski is 1831248822, a Type 1 (individual) record in the CMS NPPES registry.
Where does William Krowinski practice?
The practice location on file with NPPES is in Erie, PA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Susan Moore-Motily Counseling Psychologist · Erie, PA NPI 1073597696 David Motily Professional Counselor · Erie, PA NPI 1487626727 Ann Mcdonald Psychiatry Physician · Erie, PA NPI 1134178619 Richard Hahn Psychologist · Erie, PA NPI 1407860125 Jan Warburton Psychologist · Erie, PA NPI 1447363981 Vivian Tamburello Counseling Psychologist · Erie, PA NPI 1174627608 James Fox Clinical Psychologist · Erie, PA NPI 1871693556 George Capozzoli Marriage & Family Therapist · Erie, PA NPI 1760561237
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-08-21.