William H. Ellis, PHD
Psychologist · Psychologist in Hyannis, MA
Provider details
- Specialty
- Psychologist
- Also registered as
- Clinical Psychologist; Addiction (Substance Use Disorder) Psychologist; Adult Development & Aging Psychologist; Clinical Child & Adolescent Psychologist; Family Psychologist; Health Service Psychologist
- Credentials
- PhD
- NPI number
- 1942278031
Checked against the CMS National Provider Identifier registry on October 2, 2026.
Medicare information
- Graduated
- 1980
- Medicare
- Accepts Medicare assignment (the Medicare-approved amount as full payment)
- Telehealth
- Offers telehealth visits
From Medicare’s public Care Compare data (Doctors and Clinicians), checked October 2, 2026. Ratings are Medicare’s, not Know Cancer’s. Medicare Care Compare
About
Specialties
- Substance Abuse Counseling / Drug Counseling
- Psychology
- Clinical Psychology
Insurance
- Aetna HMO
- Blue Cross and Blue Shield - BlueCard PPO
- Cigna - Open Access
- Cigna HMO
- Cigna PPO
- First Health PPO
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