Dr. Robert L Schaffer, PH.D.
Dr. Robert L Schaffer is a Clinical Social Worker provider (Social Worker) practicing in Worcester, MA, registered in the NPPES registry with NPI 1659492304 since 2007. The credential PHD stands for Doctor of Philosophy.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1659492304 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Robert L Schaffer |
| Credential | PH.D. |
| Sex | Male |
| Practice address | Worcester, MA, 01605 |
| Phone | 5087532967 |
| Enumeration date | 2007-04-02 |
| 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 |
|---|---|---|---|---|
| 1041C0700X | Clinical Social Worker | Primary | 208637 | MA |
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: Robert Schaffer, PH.D. NPI: 1659492304 Taxonomy: 1041C0700X (Clinical Social Worker) Address: Worcester, MA, 01605
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1235279951 | Allan Ham | Individual | Mental Health Counselor | Worcester, MA |
| 1326188251 | Cory Mulvey | Individual | Mental Health Counselor | Worcester, MA |
| 1235271727 | Karen Nevalsky | Individual | Clinical Social Worker | Worcester, MA |
| 1548302722 | Karine Johnston | Individual | Clinical Social Worker | Worcester, MA |
| 1265576938 | Patricia Gross | Individual | Mental Health Counselor | Worcester, MA |
| 1437284536 | Joyce Zarazinski | Individual | Mental Health Counselor | Worcester, MA |
| 1912032608 | Young-Shin Kang | Individual | Counselor | Worcester, MA |
| 1942335039 | Elaine Bissell | Individual | Social Worker | Worcester, MA |
Verify this record
Cross-check NPI 1659492304 against the authoritative CMS record: view Dr. Robert L Schaffer 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.