Dr. Francis Xavier Oconnor, MD
- Medicare services, 2024
- 83
- Medicare patients, 2024
- 127
- Part D claims, 2024
- 19
- Hospital affiliations
- 2
- Medical groups
- 2
- Practice address
- 57 Prospect Street, Nantucket, MA 02554
- Practice phone
- Call (508) 228-1200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Oconnor's professional email, personal email and mobile number
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Dr. Francis Xavier Oconnor is a general surgeon in Nantucket, Massachusetts
Dr. Oconnor practices at Nantucket Cottage Hospital in Nantucket, Massachusetts, part of Mass General Brigham.
Dr. Oconnor's NPI, 1306819867, was assigned on February 7, 2006. Dr. Oconnor graduated from Tufts University School of Medicine in 1987. Dr. Oconnor holds Massachusetts license 70941.
- NPI
- 1306819867NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7618158742
- NPI enumeration date
- February 7, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (508) 228-1200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Francis Xavier Oconnor practices at Nantucket Cottage Hospital in Nantucket, Massachusetts
Dr. Oconnor's primary practice is Nantucket Cottage Hospital, at 57 Prospect Street, Nantucket, MA 02554 in Nantucket County. The practice phone is (508) 228-1200.
- Nantucket Cottage Hospital57 Prospect Street, Nantucket, MA 02554 · Nantucket CountyPhone(508) 228-1200
Source: Dmand AI Affiliation Data
Dr. Francis Xavier Oconnor is affiliated with 2 sites of care and 2 medical groups
Dr. Oconnor's primary practice is Nantucket Cottage Hospital in Nantucket, Massachusetts, part of Mass General Brigham. Dr. Oconnor is also affiliated with Massachusetts General Hospital. The medical group on file is Nantucket Cottage Hospital. Dmand AI also links Dr. Oconnor to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Francis Xavier 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 |
|---|---|
| Nantucket Cottage Hospital | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Francis Xavier Oconnor is one of 732 general surgeons in Massachusetts
Surgery is Dr. Oconnor's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Oconnor is licensed in Massachusetts.
Specialties and state licenses
- Surgery, MassachusettsPrimary
General surgeons near Dr. Oconnor
Counts of general surgeons 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. Francis Xavier Oconnor billed Medicare for 83 services in 2024
CMS data shows 83 Medicare services from Dr. Oconnor across 3 procedure codes in 2024, for 127 Medicare patients. Medicare paid $10,049 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Oconnor's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 842024: 831%
Dr. Oconnor compared with the Massachusetts median for general surgeons, 2024
- Dr. Oconnor
- Massachusetts median
- Medicare services
- 83vs 20059% below
- Medicare patients
- 127vs 15216% below
- Part D claims
- 16vs 2227% below
Medians across 688 general surgeons 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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Francis Xavier Oconnor treated 127 Medicare patients in 2024, average age 74
CMS counts 127 Medicare patients who saw Dr. Oconnor in 2024. The largest group is 65 to 74, with 74 patients. 64% of them have high blood pressure, and 62% have high cholesterol. 11% are also on Medicaid. Their average risk score is 0.91, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Oconnor's median patient age at 73, with 43% 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
- Women6148%
- Men6652%
Chronic conditions among Dr. Oconnor's Medicare patients, 2024
- High blood pressure64%
- High cholesterol62%
- Arthritis39%
- Cancer24%
- Atrial fibrillation20%
- Anxiety17%
- Ischemic heart disease17%
- Diabetes16%
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 73
Patient panel by sex, all payers
- Women43%
- Men57%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Francis Xavier Oconnor wrote 19 Medicare Part D claims in 2024
In 2024, Dr. Oconnor wrote 19 Medicare Part D claims for 15 patients. 100% of them were for generic drugs. CMS names the drug for 16 of them, across 1 drug with 11 or more claims each, at $52 in total drug cost.
Dr. Oconnor's most prescribed drugs by claims, 2019
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
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. Francis Xavier Oconnor ranks in the 70th percentile for colonoscopy in Medicare
Dr. Oconnor accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 68 procedures of colonoscopy by Dr. Oconnor, more than 70% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Oconnor ranks in Medicare procedure volume
- Colonoscopy
- 70th percentile68 procedures
- Skin biopsy
- 65th percentile30 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 53rd percentile25 procedures
- Melanoma (skin cancer) excision
- 66th percentile12 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Removal or shaving of skin growth: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Francis Xavier Oconnor graduated from Tufts University School of Medicine
Dr. Oconnor graduated from Tufts University School of Medicine in 1987.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Francis Xavier 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)Doctors and Clinicians Utilization Data (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. Francis Xavier 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. Francis Xavier Oconnor's NPI number?
Dr. Francis Xavier Oconnor's NPI number is 1306819867. It was assigned on February 7, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Francis Xavier Oconnor?
Dr. Francis Xavier Oconnor is a general surgeon in Nantucket, Massachusetts. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Francis Xavier Oconnor practice?
Dr. Oconnor practices at 57 Prospect Street, Nantucket, MA 02554. Dr. Oconnor's primary practice is Nantucket Cottage Hospital in Nantucket, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Oconnor to 1 medical group.
What is Dr. Francis Xavier Oconnor's office phone number?
The practice phone on file for Dr. Oconnor is (508) 228-1200.
What is Dr. Francis Xavier Oconnor's medical license number?
Dr. Oconnor holds Massachusetts license 70941.
Which hospitals is Dr. Francis Xavier Oconnor affiliated with?
Dr. Oconnor practices at Nantucket Cottage Hospital in Nantucket, Massachusetts. Dr. Oconnor is also affiliated with Massachusetts General Hospital.
What medical group is Dr. Francis Xavier Oconnor part of?
Dr. Oconnor is linked to Nantucket Cottage Hospital. Dmand AI links Dr. Oconnor to 1 more medical group.
Does Dr. Francis Xavier Oconnor accept Medicare?
Yes. CMS data shows Dr. Oconnor billed Medicare for 83 services in 2024, and Dr. Oconnor accepts Medicare assignment.
How many Medicare patients does Dr. Francis Xavier Oconnor see?
CMS counts 127 Medicare patients who saw Dr. Oconnor in 2024, with an average age of 74.
What services does Dr. Francis Xavier Oconnor bill to Medicare?
In 2024, Dr. Oconnor's most billed Medicare services were surgery: digestive system (45380), surgery: digestive system (45385) and surgery: digestive system (43239).
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Where did Dr. Francis Xavier Oconnor go to medical school?
Dr. Oconnor graduated from Tufts University School of Medicine in 1987.
What drugs does Dr. Francis Xavier Oconnor prescribe most?
In 2019 Medicare Part D data, Dr. Oconnor's most prescribed drugs by claims were Hydrocodone-Acetaminophen.
How long has Dr. Francis Xavier Oconnor been practicing?
Dr. Oconnor graduated from medical school in 1987, 39 years ago.
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