Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Brian William Oconnor, MD

Individual provider Addiction Medicine (Preventive Medicine) Physician · NPI 1912991522

Brian William Oconnor, MD is an Addiction Medicine in Woburn, Massachusetts. Graduated from Georgetown University School of Medicine in 1984, 42 years ago. Practices with Middlesex Recovery PC, a 6-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts and New Hampshire.

Years since qualifying
42
Trained at
Georgetown University School of Medicine
Licensed in
MA, NH
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

20 Tower Ofc Park
Woburn, MA 01801-2113
Phone: (781) 305-3300
Fax: (781) 305-3227
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Addiction Medicine (Preventive Medicine) Physician (primary) Taxonomy 2083A0300X · Licence 72453 (MA)
Addiction Medicine (Preventive Medicine) Physician Taxonomy 2083A0300X · Licence 20743 (NH)

Record details

NPI number1912991522
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 9, 2005
Last updated in NPPESJuly 29, 2025
Certification dateJuly 29, 2025
Mailing address20 Tower Office Park, Woburn, MA 01801-2113

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyADDICTION MEDICINE
Also practisesOBSTETRICS/GYNECOLOGY
Medical schoolGEORGETOWN UNIVERSITY SCHOOL OF MEDICINE
Graduated 1984 (42 years in practice)
Group practice Middlesex Recovery Pc — 6 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare