William Schaefer, PHD
William Schaefer is a Psychologist provider (Psychologist) practicing in Des Plaines, IL, registered in the NPPES registry with NPI 1740368364 since 2006. The credential PHD stands for Doctor of Philosophy.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1740368364 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | William Schaefer |
| Credential | PHD |
| Sex | Male |
| Practice address | Des Plaines, IL, 60016 |
| Phone | 6302411495 |
| Fax | 6302411543 |
| Enumeration date | 2006-11-01 |
| Last updated in NPPES | 2007-07-08 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 103T00000X | Psychologist | Primary | — | IL |
PHD — Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential
Copy-ready billing details
Provider: William Schaefer, PHD NPI: 1740368364 Taxonomy: 103T00000X (Psychologist) Address: Des Plaines, IL, 60016
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1588749899 | Partners in Psychiatry Ltd | Organization | Psychologist | Des Plaines, IL |
| 1457413882 | Family Guidance Centers, Inc. | Organization | Methadone Clinic | Des Plaines, IL |
| 1245415769 | Alan Weintraub | Individual | Clinical Social Worker | Des Plaines, IL |
| 1962641365 | Hilton Gordon MD | Organization | Internal Medicine Physician | Des Plaines, IL |
| 1154766400 | Shelley Skrypnyk | Individual | Professional Counselor | Des Plaines, IL |
| 1982049235 | Healthy Transitions for A New Beginning, LLC | Organization | Professional Counselor | Des Plaines, IL |
| 1508201328 | Tera Schreiber | Individual | Professional Counselor | Des Plaines, IL |
| 1588065197 | Alan S Weintraub Lsw | Organization | Clinical Social Worker | Des Plaines, IL |
Verify this record
Cross-check NPI 1740368364 against the authoritative CMS record: view William Schaefer on the official NPPES registry .
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 or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.