Quick answers
- Which hospitals does Ivan Chavarria-Siles work at?
- Medicare's official clinician data lists Ivan Chavarria-Siles at 1 hospital: Baystate Franklin Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ivan Chavarria-Siles see patients?
- Medicare's clinician data lists 2 practice locations, including Greenfield, MA and New Hyde Park, NY. Call before your visit to confirm the address.
- What is Ivan Chavarria-Siles's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does Ivan Chavarria-Siles accept Medicare assignment?
- Yes. Medicare's clinician data says Ivan Chavarria-Siles 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 Ivan Chavarria-Siles?
- (413) 772-0211, as listed in official Medicare / NPI Registry data.
- What is Ivan Chavarria-Siles's NPI number?
- 1316212780. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ivan Chavarria-Siles works
Medicare's Facility Affiliation Data lists Ivan Chavarria-Siles at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Baystate Franklin Medical CenterGreenfield, MA · Acute Care Hospital · CCN 220016
Practice locations
Addresses where Ivan Chavarria-Siles is enrolled with Medicare (CMS data updated 2026-10-02).
- 164 Main StGreenfield, MA 01301 (413) 772‑0211
- 27005 76th Ave, Mhg069New Hyde Park, NY 11040 (718) 470‑7848
Group practices
Medicare enrollment lists Ivan Chavarria-Siles as a member of these groups (CMS data updated 2026-10-02).
- North Shore-Lij Medical PC6,440 clinicians in the group
- Baystate Medical Practices Inc1,369 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Greenfield
Clinicians with the same Medicare primary specialty in Greenfield, MA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2003 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1316212780 |
| 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