Data from the NPPES registry. May not reflect recent changes — verify at nppes.cms.hhs.gov.
DR. WILLIAM H. ELLIS, PHD
Active Sole ProprietorDR. WILLIAM H. ELLIS, PHD is a Psychologist healthcare provider located in HYANNIS, Massachusetts. NPI 1942278031 is currently active in the NPPES registry. Verify at CMS.
Psychologist · HYANNIS, MA
Registration Details
- NPI Number
- 1942278031
- Provider Type
- Individual
- Gender
- Male
- NPI Issued
- Mar 14, 2006 (20.381735609677 yrs)
- Last Updated
- Sep 11, 2025
- Licenses
-
2809 (MA)2809 (MA)2809 (MA)2809 (MA)2809 (MA)
- Sole Proprietor
- Yes
Practice Information
- Address
-
218 W MAIN STHYANNIS, MA, 026013778Browse MA providers · Browse ZIP 02601
- Phone
- 5087714640
- Fax
- 5087904880
- Primary Specialty
-
Psychologist
103T00000X
- Additional Specialty
- Addiction (Substance Use Disorder) Psychologist
- Additional Specialty
- Adult Development & Aging Psychologist
- Additional Specialty
- Child, Clinical Psychologist
- Additional Specialty
- Family Psychologist
Other Psychologist Providers in HYANNIS, MA
| Name | Credential | NPI |
|---|---|---|
| JOHN BERTERA | PHD | 1295784700 |
| BARBARA S. AMIDON | PHD | 1679520902 |
| BLAISE FORTUNATA | PSYCHOLOGIST | 1609816636 |
| DR. PAUL E LAEMMLE | PH.D. | 1124176078 |
| KRISTA ELIZABETH LESINSKI | PSY.D. | 1639429160 |
Data sourced from the NPPES National Provider Identifier registry. This information is for informational purposes only and is not a substitute for verifying credentials with the appropriate licensing authority. For official verification, use the NPPES NPI Registry or the relevant state medical board.