What is Ciaran O'Brien's NPI number?

Ciaran O'Brien's National Provider Identifier (NPI) is 1548624877, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Ciaran O'Brien's specialty?

Ciaran O'Brien is listed in the NPPES registry with a primary specialty of Vascular Surgery Physician (Allopathic & Osteopathic Physicians).

Where is Ciaran O'Brien located?

Ciaran O'Brien's practice location on file with NPPES is 1 Cooper Plz, Camden, NJ 08103-1461.

What is Ciaran O'Brien's phone number?

The practice phone number listed in the NPPES registry for Ciaran O'Brien is (856) 342-2000.

Does Ciaran O'Brien accept Medicare?

Ciaran O'Brien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Ciaran O'Brien's NPI active?

Yes — Ciaran O'Brien's NPI (1548624877) is active in the NPPES registry as of the last update on 2025-08-18.

IndividualActiveAccepts Medicare

Ciaran O'Brien, MD

NPI 1548624877 · Vascular Surgery Physician · Camden, NJ

Ciaran O'Brien, MD is a Vascular Surgery Physician provider in Camden, NJ (NPI 1548624877).

Provider details

NPI number: 1548624877
Entity type: Individual
Primary specialty: Vascular Surgery PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: MT210656 (PA)

Practice location

1 Cooper Plz

Camden, NJ 08103-1461

Phone: (856) 342-2000

Street-level locationGet directions

More NJ providers

Mailing address

1 Federal St Ste 200

Camden, NJ 08103-1088

Specialties & taxonomies

Vascular Surgery PhysicianPrimary2086S0129XLicense 25MA12786300 (NJ)
Allopathic & Osteopathic Physicians
Surgery Physician208600000XLicense MT210656 (PA)
Allopathic & Osteopathic Physicians
Vascular Surgery Physician2086S0129XLicense MD467241 (PA)
Allopathic & Osteopathic Physicians

Additional practice locations (1)

3400 Spruce St
4 Maloney, Surgical Education Office
Philadelphia, PA 19104-4238
Phone: (800) 789-7366

Enrolled with Medicare as Practitioner - Vascular Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(80/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure33% of score
10 yrs in NPPES registry
Profile completeness33% of score
100% of core fields populated
Practice footprint20% of score
2 documented practice locations
Open Payments transparency13% of score
Has Open Payments disclosures (2024)

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.

Drug	Part D claims (2024)
Clopidogrel Bisulfatebrand: Clopidogrel	16

Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do not include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$2,828 across 27 records (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Enumerated: 2016-04-12
Last updated: 2025-08-18
Certified: 2025-08-18

Frequently asked questions

What is Ciaran O'Brien's NPI number?: Ciaran O'Brien's National Provider Identifier (NPI) is 1548624877, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Ciaran O'Brien's specialty?: Ciaran O'Brien is listed in the NPPES registry with a primary specialty of Vascular Surgery Physician (Allopathic & Osteopathic Physicians).
Where is Ciaran O'Brien located?: Ciaran O'Brien's practice location on file with NPPES is 1 Cooper Plz, Camden, NJ 08103-1461.
What is Ciaran O'Brien's phone number?: The practice phone number listed in the NPPES registry for Ciaran O'Brien is (856) 342-2000.
Does Ciaran O'Brien accept Medicare?: Ciaran O'Brien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Ciaran O'Brien's NPI active?: Yes — Ciaran O'Brien's NPI (1548624877) is active in the NPPES registry as of the last update on 2025-08-18.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.

Drug	Part D claims (2024)
Clopidogrel Bisulfatebrand: Clopidogrel	16

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$2,828 across 27 records (Open Payments 2024)

Provider details

Practice location

Mailing address

Specialties & taxonomies

Additional practice locations (1)

Profile Score

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Additional practice locations (1)

Profile Score

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Frequently asked questions