Dr. Brian William Oconnor, MD
- Medicare services, 2024
- 2,155
- Medicare patients, 2024
- 129
- Part D claims, 2024
- 810
- Industry payments
- $119,569
- Affiliated sites
- 2
- Practice address
- 20 Tower Office Park, Woburn, MA 01801
- Practice phone
- Call (781) 305-3300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Middlesex Recovery - Woburn
Outpatient Addiction Treatment · Woburn, Massachusetts
Find Dr. Oconnor's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Brian William Oconnor is an OB-GYN in Woburn, Massachusetts
Dr. Oconnor practices at Middlesex Recovery - Woburn in Woburn, Massachusetts.
Dr. Oconnor's NPI, 1912991522, was assigned on September 9, 2005. Dr. Oconnor graduated from Georgetown University School of Medicine in 1984. Dr. Oconnor holds Massachusetts license 72453.
- NPI
- 1912991522NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7113964933
- NPI enumeration date
- September 9, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (781) 305-3300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Brian William Oconnor practices at Middlesex Recovery - Woburn in Woburn, Massachusetts
Dr. Oconnor's primary practice is Middlesex Recovery - Woburn, at 20 Tower Office Park, Woburn, MA 01801. The practice phone is (781) 305-3300.
- Middlesex Recovery - Woburn20 Tower Office Park, Woburn, MA 01801Phone(781) 305-3300
Source: Dmand AI Affiliation Data
Dr. Brian William Oconnor is affiliated with 2 sites of care and 1 medical group
Dr. Oconnor's primary practice is Middlesex Recovery - Woburn in Woburn, Massachusetts. The medical group on file is Middlesex Recovery. Dmand AI also links Dr. Oconnor to 1 more group practice or clinic, named with a free account. Dr. Oconnor's employer is on file too: a behavioral health center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Brian William Oconnor's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Oconnor practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Middlesex Recovery - Woburn | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Brian William Oconnor is one of 903 OB-GYNs in Massachusetts
Obstetrics and gynecology is Dr. Oconnor's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dmand AI has Dr. Oconnor's licenses on file in 2 states: Massachusetts and New Hampshire.
Specialties and state licenses
- Obstetrics and gynecology, MassachusettsPrimary
- New Hampshire license
OB-GYNs near Dr. Oconnor
Counts of OB-GYNs with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Brian William Oconnor billed Medicare for 2,155 services in 2024
CMS data shows 2,155 Medicare services from Dr. Oconnor across 9 procedure codes in 2024, for 129 Medicare patients. Medicare paid $139,363 for them. Every service was in an office.
Dr. Oconnor's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,0842024: 1,083No change
- Lab and pathology
- 2023: 7582024: 66412%
- Other services
- 2023: 02024: 222
- Tests and treatments
- 2023: 02024: 186
Dr. Oconnor compared with the Massachusetts median for OB-GYNs, 2024
- Dr. Oconnor
- Massachusetts median
- Medicare services
- 2,155vs 5837.2 times
- Medicare patients
- 129vs 562.3 times
- Part D claims
- 709vs 2924.4 times
Medians across 803 OB-GYNs in Massachusetts with Dmand AI profiles that report each measure.
Dr. Oconnor's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Oconnor and other OB-GYNs in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Brian William Oconnor treated 129 Medicare patients in 2024, average age 61
CMS counts 129 Medicare patients who saw Dr. Oconnor in 2024. The largest group is under 65, with 65 patients. 75% of them have alcohol and drug use disorders, and 66% have anxiety. 64% are also on Medicaid. Their average risk score is 1.31, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Oconnor's median patient age at 46, with 36% women.
Dr. Oconnor's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Oconnor's Medicare patients by sex, 2024
- Women6047%
- Men6953%
Chronic conditions among Dr. Oconnor's Medicare patients, 2024
- Alcohol and drug use disorders75%
- Anxiety66%
- Mood disorders60%
- Tobacco use55%
- Depression51%
- High blood pressure47%
- High cholesterol41%
- Arthritis37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Oconnor's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 46
Patient panel by sex, all payers
- Women36%
- Men62%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Brian William Oconnor wrote 810 Medicare Part D claims in 2024
In 2024, Dr. Oconnor wrote 810 Medicare Part D claims for 84 patients. 92% of them were for generic drugs. CMS names the drug for 709 of them, across 16 drugs with 11 or more claims each, at $96,810 in total drug cost. In 2023, CMS named 684 claims across 13 drugs.
Dr. Oconnor's Part D claims by kind of drug, 2024
- Generic747 claims92%
- Brand-name63 claims8%
Dr. Oconnor's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Oconnor's Part D claims, 2024
- Antipsychotics, patients 65 and over1%12 of 810 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 6842024: 7094%
Drugs named by CMS: 16 in 2024, 13 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Brian William Oconnor offers telehealth to Medicare patients
Dr. Oconnor accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Oconnor as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Brian William Oconnor received $119,569 in industry payments from 2016 to 2025
CMS Open Payments shows 187 general payments to Dr. Oconnor from 9 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 82% of the total. Alkermes, Inc. paid the most, $113,826.
General payments to Dr. Oconnor by program year, 2016 to 2025
General payments to Dr. Oconnor by kind, 2016 to 2025
- Speaker and faculty fees$97,66582%
- Travel and lodging$9,8068%
- Consulting fees$8,1487%
- Food and beverage$3,9173%
- Education$330%
Companies that paid Dr. Oconnor the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Brian William Oconnor graduated from Georgetown University School of Medicine
Dr. Oconnor graduated from Georgetown University School of Medicine in 1984.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Brian William Oconnor's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Brian William Oconnor
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Brian William Oconnor's NPI number?
Dr. Brian William Oconnor's NPI number is 1912991522. It was assigned on September 9, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Brian William Oconnor?
Dr. Brian William Oconnor is an OB-GYN in Woburn, Massachusetts. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Brian William Oconnor practice?
Dr. Oconnor practices at 20 Tower Office Park, Woburn, MA 01801. Dr. Oconnor's primary practice is Middlesex Recovery - Woburn in Woburn, Massachusetts. Dmand AI also links Dr. Oconnor to 1 group practice or clinic.
What is Dr. Brian William Oconnor's office phone number?
The practice phone on file for Dr. Oconnor is (781) 305-3300.
What is Dr. Brian William Oconnor's medical license number?
Dr. Oconnor holds Massachusetts license 72453, one of the licenses on file in 2 states.
Which states has Dr. Brian William Oconnor been licensed in?
Dmand AI has state licenses on file for Dr. Oconnor in Massachusetts and New Hampshire.
What medical group is Dr. Brian William Oconnor part of?
Dr. Oconnor is linked to Middlesex Recovery.
Does Dr. Brian William Oconnor accept Medicare?
Yes. CMS data shows Dr. Oconnor billed Medicare for 2,155 services in 2024, and Dr. Oconnor accepts Medicare assignment.
Does Dr. Brian William Oconnor offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Oconnor as offering telehealth services.
How many Medicare patients does Dr. Brian William Oconnor see?
CMS counts 129 Medicare patients who saw Dr. Oconnor in 2024, with an average age of 61.
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What services does Dr. Brian William Oconnor bill to Medicare?
In 2024, Dr. Oconnor's most billed Medicare services were office visit, established patient (99213), lab and pathology test (80307) and office visit, established patient (99214).
Where did Dr. Brian William Oconnor go to medical school?
Dr. Oconnor graduated from Georgetown University School of Medicine in 1984.
What drugs does Dr. Brian William Oconnor prescribe most?
In 2024 Medicare Part D data, Dr. Oconnor's most prescribed drugs by claims were Buprenorphine-Naloxone, Buprenorphine HCl and Lorazepam.
Has Dr. Brian William Oconnor received payments from drug or device companies?
CMS Open Payments shows $119,569 in general payments to Dr. Oconnor from 9 companies from 2016 to 2025. The largest total came from Alkermes, Inc.
How long has Dr. Brian William Oconnor been practicing?
Dr. Oconnor graduated from medical school in 1984, 42 years ago.
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