What is James Callahan's NPI number?

James Callahan's National Provider Identifier (NPI) is 1245236264, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is James Callahan's specialty?

James Callahan is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).

Where is James Callahan located?

James Callahan's practice location on file with NPPES is 8 Quakerbridge Plz, Mercerville, NJ 08619-1255.

What is James Callahan's phone number?

The practice phone number listed in the NPPES registry for James Callahan is (609) 890-0033.

Is James Callahan's NPI active?

Yes — James Callahan's NPI (1245236264) is active in the NPPES registry as of the last update on 2014-02-11.

IndividualActive

James Callahan, M.D.

NPI 1245236264 · Diagnostic Radiology Physician · Mercerville, NJ

James Callahan, M.D. is a Diagnostic Radiology Physician provider in Mercerville, NJ (NPI 1245236264).

Provider details

NPI number: 1245236264
Entity type: Individual
Primary specialty: Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: No
License: MA04824100 (NJ)

Practice location

8 Quakerbridge Plz

Mercerville, NJ 08619-1255

Phone: (609) 890-0033

Fax: (609) 890-0440

Street-level locationGet directions

More NJ providers

Mailing address

3535 Quakerbridge Rd

Trenton, NJ 08619-1200

Specialties & taxonomies

Diagnostic Radiology PhysicianPrimary2085R0202XLicense MA04824100 (NJ)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(92/100 index)

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

Registry tenure33% of score
21 yrs in NPPES registry
Profile completeness33% of score
100% of core fields populated
Practice footprint20% of score
1 documented practice location
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.

Transparency — industry payments

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

$17 across 1 record (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: 2005-06-23
Last updated: 2014-02-11

Frequently asked questions

What is James Callahan's NPI number?: James Callahan's National Provider Identifier (NPI) is 1245236264, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is James Callahan's specialty?: James Callahan is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
Where is James Callahan located?: James Callahan's practice location on file with NPPES is 8 Quakerbridge Plz, Mercerville, NJ 08619-1255.
What is James Callahan's phone number?: The practice phone number listed in the NPPES registry for James Callahan is (609) 890-0033.
Is James Callahan's NPI active?: Yes — James Callahan's NPI (1245236264) is active in the NPPES registry as of the last update on 2014-02-11.

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

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Transparency — industry payments

Frequently asked questions