Quick answers
- Where does Daniel J. Oconnor see patients?
- Medicare's clinician data lists 2 practice locations, including Sandwich, MA and Boston, MA. Call before your visit to confirm the address.
- What is Daniel J. Oconnor's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does Daniel J. Oconnor accept Medicare assignment?
- Yes. Medicare's clinician data says Daniel J. Oconnor 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 Daniel J. Oconnor?
- (508) 833-8222, as listed in official Medicare / NPI Registry data.
- What is Daniel J. Oconnor's NPI number?
- 1194794958. 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 Daniel J. Oconnor is enrolled with Medicare (CMS data updated 2026-10-02).
- 282 Route 130Sandwich, MA 02563 (508) 833‑8222
- 50 Staniford St, Suite 600Boston, MA 02114 (617) 367‑4800
Group practices
Medicare enrollment lists Daniel J. Oconnor as a member of this group (CMS data updated 2026-10-02).
- Ophthalmic Consultants of Boston Inc68 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Sandwich
Clinicians with the same Medicare primary specialty in Sandwich, MA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Tulane University School Of Medicine |
| Graduation year | 1987 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1194794958 |
| 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
- 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