Dr. Ciaran O'Brien, MD
- Part D claims, 2024
- 33
- Publications
- 8
- Hospital affiliations
- 2
- Industry payments
- $5,177
- Medical group
- 1
- Practice address
- 501 Front St, Elmer, NJ 08318
- Practice phone
- Call (856) 575-4500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Inspira Medical Center Elmer
Elmer, New Jersey
Find Dr. 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.
Dr. Ciaran O'Brien is a general surgeon in Elmer, New Jersey
Dr. O'Brien practices at Inspira Medical Center Elmer in Elmer, New Jersey.
Dr. O'Brien's NPI, 1548624877, was assigned on April 12, 2016. Dr. O'Brien graduated from Columbia University College of Physicians and Surgeons in 2016. Dr. O'Brien holds Pennsylvania license MT210656.
- NPI
- 1548624877NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4981123577
- NPI enumeration date
- April 12, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (856) 575-4500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ciaran O'Brien practices at Inspira Medical Center Elmer in Elmer, New Jersey
Dr. O'Brien's primary practice is Inspira Medical Center Elmer, at 501 Front St, Elmer, NJ 08318 in Salem County. The practice phone is (856) 575-4500.
- Inspira Medical Center Elmer501 Front St, Elmer, NJ 08318 · Salem CountyPhone(856) 575-4500
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ciaran O'Brien is affiliated with 3 sites of care and 1 medical group
Dr. O'Brien's primary practice is Inspira Medical Center Elmer in Elmer, New Jersey. Dr. O'Brien is also affiliated with Cooper University Hospital. The medical group on file is Cooper University Physicians. Dmand AI also links Dr. O'Brien to 1 more hospital, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ciaran O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Brien practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Inspira Medical Center Elmer | Available with a free account |
| +2 more affiliated sites | 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 each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Ciaran O'Brien is one of 675 general surgeons in New Jersey
Surgery is Dr. O'Brien's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. O'Brien is licensed in Pennsylvania.
Specialties and state licenses
- Surgery, PennsylvaniaPrimary
General surgeons near Dr. O'Brien
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. Ciaran O'Brien's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. O'Brien's median patient age at 73, with 61% women.
Dr. 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 73
Patient panel by sex, all payers
- Women61%
- Men36%
Source: Dmand AI Patient Panel Data
Dr. Ciaran O'Brien wrote 33 Medicare Part D claims in 2024
In 2024, Dr. O'Brien wrote 33 Medicare Part D claims for 19 patients. 97% of them were for generic drugs. CMS names the drug for 16 of them, across 1 drug with 11 or more claims each, at $205 in total drug cost. In 2023, CMS named 17 claims across 1 drug.
Dr. O'Brien's Part D claims by kind of drug, 2024
- Generic32 claims97%
- Brand-name and other1 claims3%
Dr. O'Brien'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. O'Brien's Part D claims, 2024
- Opioids33%11 of 33 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: 172024: 166%
Drugs named by CMS: 1 in 2024, 1 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. Ciaran O'Brien ranks in the 68th percentile for removal of tissue in Medicare
Dr. O'Brien accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 19 procedures of removal of tissue by Dr. O'Brien, more than 68% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. O'Brien ranks in Medicare procedure volume
- Removal of tissue
- 68th percentile19 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Leg revascularization (restoring blood flow): 1 to 10 procedures (CMS shows small counts as a range)
Varicose vein removal: 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)
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.
Dr. Ciaran O'Brien has 8 publications on record
Dmand AI links 8 papers to Dr. O'Brien, published from 2017 to 2024. 2024 was the busiest year, with 3. The most frequent topics are Reperfusion Injury, Mice, Inbred C57BL and Mice, Knockout. Dr. O'Brien has published most often in Transplantation. Dr. O'Brien's most frequent co-authors are Seth Jason Concors, MD, Paul Tarver Hernandez, MD and Matthew Levine, DO.
Dr. O'Brien's papers by year, 2017 to 2024
Topics Dr. O'Brien writes about most
- Reperfusion Injury
- Mice, Inbred C57BL
- Mice, Knockout
Dr. O'Brien's most frequent co-authors
- Seth Jason Concors, MD3 shared papers
- Paul Tarver Hernandez, MD3 shared papers
- Matthew Levine, DO3 shared papers
Recent publications by Dr. O'Brien
Transplantation
See who Dr. O'Brien researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. O'Brien works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ciaran O'Brien received $5,177 in industry payments from 2023 to 2025
CMS Open Payments shows 50 general payments to Dr. O'Brien from 9 drug and device companies from 2023 to 2025. Food and beverage make up the largest share, 58% of the total. W. L. Gore & Associates, Inc. paid the most, $2,516.
General payments to Dr. O'Brien by program year, 2023 to 2025
General payments to Dr. O'Brien by kind, 2023 to 2025
- Food and beverage$2,98358%
- Education$2,19442%
Companies that paid Dr. O'Brien the most, 2023 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ciaran O'Brien graduated from Columbia University College of Physicians and Surgeons
Dr. O'Brien graduated from Columbia University College of Physicians and Surgeons in 2016.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ciaran 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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Ciaran 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 Dr. Ciaran O'Brien's NPI number?
Dr. Ciaran O'Brien's NPI number is 1548624877. It was assigned on April 12, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Ciaran O'Brien?
Dr. Ciaran O'Brien is a general surgeon in Elmer, New Jersey. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Ciaran O'Brien practice?
Dr. O'Brien practices at 501 Front St, Elmer, NJ 08318. Dr. O'Brien's primary practice is Inspira Medical Center Elmer in Elmer, New Jersey. Dmand AI also links Dr. O'Brien to 1 hospital.
What is Dr. Ciaran O'Brien's office phone number?
The practice phone on file for Dr. O'Brien is (856) 575-4500.
What is Dr. Ciaran O'Brien's medical license number?
Dr. O'Brien holds Pennsylvania license MT210656.
Which hospitals is Dr. Ciaran O'Brien affiliated with?
Dr. O'Brien is affiliated with Cooper University Hospital. Dmand AI links Dr. O'Brien to 1 more hospital.
What medical group is Dr. Ciaran O'Brien part of?
Dr. O'Brien is linked to Cooper University Physicians.
Does Dr. Ciaran O'Brien accept Medicare?
Yes. CMS lists Dr. O'Brien as accepting Medicare assignment.
Where did Dr. Ciaran O'Brien go to medical school?
Dr. O'Brien graduated from Columbia University College of Physicians and Surgeons in 2016.
What drugs does Dr. Ciaran O'Brien prescribe most?
In 2024 Medicare Part D data, Dr. O'Brien's most prescribed drugs by claims were Clopidogrel.
Show 4 more questionsShow fewer questions
Has Dr. Ciaran O'Brien received payments from drug or device companies?
CMS Open Payments shows $5,177 in general payments to Dr. O'Brien from 9 companies from 2023 to 2025. The largest total came from W. L. Gore & Associates, Inc.
How long has Dr. Ciaran O'Brien been practicing?
Dr. O'Brien graduated from medical school in 2016, 10 years ago.
Does Dr. Ciaran O'Brien do research?
Dmand AI links 8 publications to Dr. O'Brien, published from 2017 to 2024.
Who does Dr. Ciaran O'Brien publish with?
Dr. O'Brien's most frequent co-authors are Seth Jason Concors, MD (3 shared papers), Paul Tarver Hernandez, MD (3 shared papers) and Matthew Levine, DO (3 shared papers).
Selling to surgery practices?
See general surgeons in New Jersey by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card