Quick answers
- Which hospitals does Liam Mahoney work at?
- Medicare's official clinician data lists Liam Mahoney at 3 hospitals: Holy Family Hospital, Parkland Medical Center and Portsmouth Regional Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Liam Mahoney see patients?
- Medicare's clinician data lists 4 practice locations, including Haverhill, MA, Plaistow, NH and Methuen, MA. Call before your visit to confirm the address.
- What is Liam Mahoney's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Liam Mahoney accept Medicare assignment?
- Medicare's clinician data says Liam Mahoney may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- Does Liam Mahoney offer telehealth?
- Medicare's clinician data says Liam Mahoney offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Liam Mahoney?
- (978) 374-2000, as listed in official Medicare / NPI Registry data.
- What is Liam Mahoney's NPI number?
- 1407243504. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Liam Mahoney works
Medicare's Facility Affiliation Data lists Liam Mahoney at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Holy Family HospitalMethuen, MA · Acute Care Hospital · CCN 220080
- Parkland Medical CenterDerry, NH · Acute Care Hospital · CCN 300017
- Portsmouth Regional HospitalPortsmouth, NH · Acute Care Hospital · CCN 300029
Practice locations
Addresses where Liam Mahoney is enrolled with Medicare (CMS data updated 2026-10-02).
- 140 Lincoln AveHaverhill, MA 01830 (978) 374‑2000
- 26 Plaistow RdPlaistow, NH 03865 (603) 432‑1500
- 70 E StMethuen, MA 01844 (978) 687‑0151
- 800 W Cummings ParkWoburn, MA 01801 (781) 776‑1944
Group practices
Medicare enrollment lists Liam Mahoney as a member of these groups (CMS data updated 2026-10-02).
- Community Medical Associates, Inc.157 clinicians in the group
- Emergency Medicine Services of NH, LLC67 clinicians in the group
- Jal Practice, LLC5 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Haverhill
Clinicians with the same Medicare primary specialty in Haverhill, MA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2009 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1407243504 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians