Quick answers
- Which hospitals does Eric D. Gaier work at?
- Medicare's official clinician data lists Eric D. Gaier at 2 hospitals: Boston Children's Hospital and Massachusetts Eye and Ear Infirmary -. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Eric D. Gaier see patients?
- Medicare's clinician data lists 1 practice location in Boston, MA. Call before your visit to confirm the address.
- What is Eric D. Gaier's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does Eric D. Gaier accept Medicare assignment?
- Medicare's clinician data says Eric D. Gaier may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Eric D. Gaier?
- (617) 355-6000, as listed in official Medicare / NPI Registry data.
- What is Eric D. Gaier's NPI number?
- 1134568199. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Eric D. Gaier works
Medicare's Facility Affiliation Data lists Eric D. Gaier at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Boston Children's HospitalBoston, MA · Children's Hospital · CCN 223302
- Massachusetts Eye and Ear Infirmary -Boston, MA · Acute Care Hospital · CCN 220075
Practice locations
Addresses where Eric D. Gaier is enrolled with Medicare (CMS data updated 2026-10-02).
- 300 Longwood AveBoston, MA 02115 (617) 355‑6000
Group practices
Medicare enrollment lists Eric D. Gaier as a member of this group (CMS data updated 2026-10-02).
- Childrens Hospital Ophthalmology Foundation Inc28 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Boston
Clinicians with the same Medicare primary specialty in Boston, MA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Connecticut School Of Medicine |
| Graduation year | 2013 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1134568199 |
| 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