Mark Dumas, PHD
Mark Dumas is a Clinical Psychologist provider (Psychologist) practicing in Warwick, RI, registered in the NPPES registry with NPI 1740497387 since 2007. The credential PHD stands for Doctor of Philosophy. Practices at Orthopedics Rhode Island, Inc. (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1740497387 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Mark Dumas |
| Credential | PHD |
| Sex | Male |
| Practice address | Warwick, RI, 02886 |
| Phone | 4017733700 |
| Fax | 4017733701 |
| Enumeration date | 2007-05-16 |
| Last updated in NPPES | 2026-05-18 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 103TC0700X | Clinical Psychologist | Primary | PS00569 | RI |
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: Mark Dumas, PHD NPI: 1740497387 Taxonomy: 103TC0700X (Clinical Psychologist) Address: Warwick, RI, 02886
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1811388283 | Janelle Shannon | Individual | Social Worker | Warwick, RI |
| 1922475870 | Rebecca Parant | Individual | Psychiatric/Mental Health Nurse Practitioner | Warwick, RI |
| 1578005625 | Michael Macedo | Individual | Clinical Social Worker | Warwick, RI |
| 1982227682 | Orthopedics Rhode Island, Inc. | Organization | Durable Medical Equipment & Medical Supplies | Warwick, RI |
| 1285258228 | Wendy Blackburn | Individual | Clinical Social Worker | Warwick, RI |
| 1184349094 | Hannah Gilbert | Individual | Mental Health Counselor | Warwick, RI |
| 1366157505 | Breanna Mayeski | Individual | Mental Health Counselor | Warwick, RI |
| 1770282022 | Blaire Simas | Individual | Social Worker | Warwick, RI |
Verify this record
Cross-check NPI 1740497387 against the authoritative CMS record: view Mark Dumas 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 2026-05-18.