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Marriage and Family Therapist

William A. Mahoney

Sees patients in Danvers, MA · Andover, MA · Massachusetts

Summary

William A. Mahoney is a marriage and family therapist at 152 Sylvan St, Fl 2a, Danvers, MA 01923. Phone: (978) 222-3121. Accepts Medicare assignment. NPI 1639323298. Source: CMS National Downloadable File, updated October 2, 2026.

  • Specialty: Marriage and family therapist
  • Address: 152 Sylvan St, Fl 2a, Danvers, MA 01923 · Directions (1 more location)
  • Phone: (978) 222‑3121
  • Medicare: Accepts Medicare assignment
  • Group practice: Optum Behavioral Care of Connecticut PC
  • School: graduated 2001
  • Gender (as listed): Male
  • Telehealth: offered
Call(978) 222‑3121 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about William A. Mahoney, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does William A. Mahoney accept Medicare assignment?
Yes. Medicare's clinician data says William A. Mahoney accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
What is William A. Mahoney's NPI number?
1639323298. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where William A. Mahoney is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists William A. Mahoney as a member of this group (CMS data updated October 2, 2026).

  • Optum Behavioral Care of Connecticut PC123 clinicians in the group

Specialties

Find other clinicians: Marriage and Family Therapist, Massachusetts →

Other marriage and family therapists in Massachusetts

Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.

All marriage and family therapists in Massachusetts →

Other clinicians in Optum Behavioral Care of Connecticut PC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

Graduation year2001
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1639323298
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians