James P. Callahan, M.D.
Diagnostic Radiology Physician · Mercerville, NJ
James P. Callahan, M.D. is a diagnostic radiology physician with a practice address in Mercerville, New Jersey, and NPI 1245236264, issued on Jun 23, 2005. Check the license (New Jersey MA04824100, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- James P. Callahan
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- MA04824100 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 8 Quakerbridge Plz, Mercerville, NJ 08619
- Phone
- (609) 890-0033
- Enumerated
- Jun 23, 2005
- Record last updated
- Feb 11, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (609) 890-0440
- Medicaid ID
- 0677205 NJ
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 1,102 in New Jersey → Look up another NPI →
Also registered at 8 Quakerbridge Plz
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Robert Collins, M.D.Diagnostic Radiology Physician1710983507
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- Dearon Tufankjian, D.O.Diagnostic Radiology Physician1902804792
Verify James P. Callahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license MA04824100Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $16.67
1 payment: food and beverage; the largest payer was Abbvie Inc. The 8,048 providers of this specialty with any payment received $2,488.38 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
James P. Callahan among 1,102 diagnostic radiology physician records in New Jersey
James P. Callahan, M.D. is one of 1,102 diagnostic radiology physician records with a practice address in New Jersey. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 75% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 71% of these records are
- Record last updated2014 · 72% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 diagnostic radiology physician records list a practice address in Mercerville
They are 3 of the 133 NPPES records with a practice address in Mercerville, and 1,102 diagnostic radiology physician records in New Jersey.
All 1,102 in New Jersey → Every provider in Mercerville → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Robert Collins, M.D.Mercerville, NJ 086191710983507
- Rosemary Locastro, M.D.Trenton, NJ 086191952307613
- Dearon Tufankjian, D.O.Mercerville, NJ 086191902804792
- Yaakov Applbaum, M.D.Trenton, NJ 086381356386650
- Ajay Choudhri, M.D.Trenton, NJ 086381205871431
- Brad Hoppenfeld, M.D.Trenton, NJ 086381396773776
- Bradd Millian, MDTrenton, NJ 086381215137427
- Kenneth Montini, M.D.Trenton, NJ 086381669614921
Common questions
What is James P. Callahan, M.D.'s NPI number?
James P. Callahan, M.D.'s National Provider Identifier (NPI) is 1245236264, issued on Jun 23, 2005. An NPI identifies a provider in billing; it is not a license.
Where is James P. Callahan, M.D. located?
The NPPES record lists a practice address at 8 Quakerbridge Plz, Mercerville, NJ, 08619. Phone: (609) 890-0033. Providers update this record themselves, so call before visiting.
How can I verify James P. Callahan, M.D.'s license?
NPPES lists New Jersey license number MA04824100, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.