James V. O'Brien, NP
- Part D claims, 2024
- 12
- Industry payments
- $52
- Medical group
- 1
- State licenses
- 2
- Year NPI issued
- 2024
- Practice address
- 18 Newbury St Fl 5, Boston, MA 02116
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find James O'Brien'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.
James V. O'Brien is a nurse practitioner in Boston, Massachusetts
James O'Brien practices with Memorial Sloan Kettering Cancer Center (MSK), Department of Surgery, a medical group.
James O'Brien's NPI, 1558101964, was assigned on May 31, 2024. James O'Brien holds Massachusetts license RN2380433.
- NPI
- 1558101964NPI Registry (opens in a new tab)
- NPI enumeration date
- May 31, 2024
- NPI status
- Active
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 28
- Medical school graduation
- 2024
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
James V. O'Brien's practice address is in Boston, Massachusetts
James O'Brien's practice address in the NPI Registry is 18 Newbury St Fl 5, Boston, MA 02116.
- NPI Registry address18 Newbury St Fl 5, Boston, MA 02116
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
James V. O'Brien is affiliated with 1 medical group
James O'Brien is part of Memorial Sloan Kettering Cancer Center (MSK), Department of Surgery, a medical group in New York, New York.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at James V. O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where James O'Brien practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Memorial Sloan Kettering Cancer Center (MSK), Department of Surgery | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Memorial Sloan Kettering Cancer Center (MSK), Department of Surgery and 6.2K+ hospitals, with verified contacts in the same login.
James V. O'Brien is one of 2,511 nurse practitioners in Massachusetts
Nurse practitioner is James O'Brien's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Dmand AI has James O'Brien's licenses on file in 2 states: Massachusetts and New York.
Specialties and state licenses
- Nurse practitioner, MassachusettsPrimary
- New York license
Nurse practitioners near James O'Brien
Counts of nurse practitioners 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
James V. O'Brien's patients have a median age of 42
Across all payers, Dmand AI patient panel data puts James O'Brien's median patient age at 42, with 0% women.
James O'Brien's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 42
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
James V. O'Brien wrote 12 Medicare Part D claims in 2024
In 2024, James O'Brien wrote 12 Medicare Part D claims. 92% of them were for generic drugs.
James O'Brien's Part D claims by kind of drug, 2024
- Generic11 claims92%
- Brand-name and other1 claims8%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
James V. O'Brien received $52 in industry payments in 2025
CMS Open Payments shows 2 general payments to James O'Brien from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Eli Lilly and Company paid the most, $29.
Companies that paid James O'Brien the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for James V. O'Brien'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 James V. O'Brien
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is James V. O'Brien's NPI number?
James V. O'Brien's NPI number is 1558101964. It was assigned on May 31, 2024, and it is active in the NPI Registry.
What does James V. O'Brien specialize in?
James V. O'Brien is a nurse practitioner in Boston, Massachusetts. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does James V. O'Brien practice?
James O'Brien practices at 18 Newbury St Fl 5, Boston, MA 02116. James O'Brien's primary practice is Memorial Sloan Kettering Cancer Center (MSK), Department of Surgery, a medical group.
What is James V. O'Brien's medical license number?
James O'Brien holds Massachusetts license RN2380433, one of the licenses on file in 2 states.
Which states has James V. O'Brien been licensed in?
Dmand AI has state licenses on file for James O'Brien in Massachusetts and New York.
What medical group is James V. O'Brien part of?
James O'Brien is part of Memorial Sloan Kettering Cancer Center (MSK), Department of Surgery in New York, New York.
Has James V. O'Brien received payments from drug or device companies?
CMS Open Payments shows $52 in general payments to James O'Brien from 2 companies from 2025 to 2025. The largest total came from Eli Lilly and Company.
How long has James V. O'Brien been practicing?
James O'Brien graduated from medical school in 2024, 2 years ago.
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