Quick answers
- Where does Brian W. Oconnor see patients?
- Medicare's clinician data lists 3 practice locations, including Chelmsford, MA, Woburn, MA and Salem, NH. Call before your visit to confirm the address.
- What is Brian W. Oconnor's specialty?
- Medicare lists Addiction Medicine as the primary specialty, and also Obstetrics/Gynecology.
- Does Brian W. Oconnor accept Medicare assignment?
- Yes. Medicare's clinician data says Brian W. 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.
- Does Brian W. Oconnor offer telehealth?
- Medicare's clinician data says Brian W. Oconnor offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Brian W. Oconnor?
- (978) 455-0807, as listed in official Medicare / NPI Registry data.
- What is Brian W. Oconnor's NPI number?
- 1912991522. 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 Brian W. Oconnor is enrolled with Medicare (CMS data updated 2026-10-02).
- 2 Courthouse Ln, Unit 2Chelmsford, MA 01824 (978) 455‑0807
- 20 Tower Office ParkWoburn, MA 01801 (781) 305‑3300
- 45 Stiles Rd, Suite 206Salem, NH 03079 (603) 824‑6937
Group practices
Medicare enrollment lists Brian W. Oconnor as a member of this group (CMS data updated 2026-10-02).
- Middlesex Recovery PC6 clinicians in the group
Specialties
- Addiction Medicineprimary
- Obstetrics/Gynecologyalso
Other addiction medicine doctors in Massachusetts
Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Georgetown University School Of Medicine |
| Graduation year | 1984 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1912991522 |
| 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