Quick answers
- Which hospitals does Justin Mackey work at?
- Medicare's official clinician data lists Justin Mackey at 5 hospitals: Hospital of Univ of Pennsylvania, Mercy Catholic Medical Center- Mercy Fitzgerald, Nazareth Hospital, St Francis Hospital and St Mary Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Justin Mackey see patients?
- Medicare's clinician data lists 2 practice locations, including Darby, PA and Wilmington, DE. Call before your visit to confirm the address.
- What is Justin Mackey's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Justin Mackey accept Medicare assignment?
- Yes. Medicare's clinician data says Justin Mackey accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Justin Mackey?
- (610) 237-4814, as listed in official Medicare / NPI Registry data.
- What is Justin Mackey's NPI number?
- 1275782849. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Justin Mackey works
Medicare's Facility Affiliation Data lists Justin Mackey at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Hospital of Univ of PennsylvaniaPhiladelphia, PA · Acute Care Hospital · CCN 390111
- Mercy Catholic Medical Center- Mercy FitzgeraldDarby, PA · Acute Care Hospital · CCN 390156
- Nazareth HospitalPhiladelphia, PA · Acute Care Hospital · CCN 390204
- St Francis HospitalWilmington, DE · Acute Care Hospital · CCN 080003
- St Mary Medical CenterLanghorne, PA · Acute Care Hospital · CCN 390258
Practice locations
Addresses where Justin Mackey is enrolled with Medicare (CMS data updated 2026-10-02).
- 1500 Lansdowne AveDarby, PA 19023 (610) 237‑4814
- 701 N Clayton StWilmington, DE 19805 (610) 237‑4814
Group practices
Medicare enrollment lists Justin Mackey as a member of this group (CMS data updated 2026-10-02).
- Mercy Diagnostic Imaging PC90 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Darby
Clinicians with the same Medicare primary specialty in Darby, PA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York Medical College |
| Graduation year | 2004 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1275782849 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians