Quick answers
- Which hospitals does Alliam Regan work at?
- Medicare's official clinician data lists Alliam Regan at 3 hospitals: Baystate Medical Center, Baystate Noble Hospital and The Cooley Dickinson Hospital Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Alliam Regan see patients?
- Medicare's clinician data lists 11 practice locations, including Longmeadow, MA, Agawam, MA and Northampton, MA. Call before your visit to confirm the address.
- What is Alliam Regan's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Hospitalist.
- Does Alliam Regan accept Medicare assignment?
- Yes. Medicare's clinician data says Alliam Regan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Alliam Regan?
- (413) 374-0031, as listed in official Medicare / NPI Registry data.
- What is Alliam Regan's NPI number?
- 1407274574. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Alliam Regan works
Medicare's Facility Affiliation Data lists Alliam Regan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Baystate Medical CenterSpringfield, MA · Acute Care Hospital · CCN 220077
- Baystate Noble HospitalWestfield, MA · Acute Care Hospital · CCN 220065
- The Cooley Dickinson Hospital IncNorthampton, MA · Acute Care Hospital · CCN 220015
Practice locations
Addresses where Alliam Regan is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 11; the Medicare profile lists all.
- 1200 Converse StLongmeadow, MA 01106 (413) 374‑0031
- 153 Cardinal DrAgawam, MA 01001 (413) 374‑0031
- 25 Coles Meadow Rd, Suite 37Northampton, MA 01060 (413) 374‑0031
- 345 Haydenville RdLeeds, MA 01053 (413) 374‑0031
- 40 Court StWestfield, MA 01085 (413) 374‑0031
Group practices
Medicare enrollment lists Alliam Regan as a member of these groups (CMS data updated 2026-10-02).
- Am Medical PC13 clinicians in the group
- Geriatric Primary Care PC13 clinicians in the group
Specialties
- Internal Medicineprimary
- Hospitalistalso
Other internal medicine doctors in Longmeadow
Clinicians with the same Medicare primary specialty in Longmeadow, MA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Massachusetts Medical School |
| Graduation year | 2014 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1407274574 |
| 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