Donald Zajick, MD

Medicare activity in 2024

Official CMS public-use data for Donald Zajick, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Most frequent services

1. X-ray of chest, 1 view (71045)489 services
2. Screening 3d breast mammography (77063)426 services
3. Screening mammography (77067)426 services
4. Ct scan head or brain without contrast (70450)143 services
5. X-ray of chest, 2 views (71046)118 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

• High blood pressure75%
• High cholesterol75%
• Arthritis58%
• Ischemic heart disease38%
• Diabetes35%
• Anxiety35%

Hospitals where Donald Zajick works

Medicare's Facility Affiliation Data lists Donald Zajick at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• Hospital of University of PennsylvaniaPhiladelphia, PA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 390111
• Mercy Catholic Medical Center- Mercy FitzgeraldDarby, PA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 390156
• Nazareth HospitalPhiladelphia, PA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 390204
• St Francis HospitalWilmington, DE · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 080003
• St Mary Medical CenterLanghorne, PA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 390258

Practice locations

Addresses where Donald Zajick is enrolled with Medicare (CMS data updated October 2, 2026).

• 1500 Lansdowne AveDarby, PA 19023 (610) 237‑4814
• 2002 Foulk RdWilmington, DE 19810 (610) 237‑4814
• 701 N Clayton StWilmington, DE 19805 (610) 237‑4814

Group practices

Medicare enrollment lists Donald Zajick as a member of this group (CMS data updated October 2, 2026).

• Mercy Diagnostic Imaging PC90 clinicians in the group

Specialties

• Diagnostic Radiologyprimary

Find other Diagnostic Radiology doctors in Pennsylvania →

Other radiologists in Darby

Clinicians with the same Medicare primary specialty in Darby, PA — not a recommendation.

• Amy Vogia, DO
• Gustavo Sanchez, MD
• Raja Kyriakos, MD
• Joel D. Neuman, MD
• Lynn Lucas Fehm, MD
• James F. Stinchon Iii, MD
• Kevin Brown, MD
• Justin Mackey, MD

All radiologists in Darby →

Other clinicians in Mercy Diagnostic Imaging PC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Adam Averbuch, DO
• Mahmoud Shalaby, MD
• Oleg Teytelboym, MD
• Amy Vogia, DO
• Kevin Brown, MD
• Christian K. Pedersen, MD

Clinician information

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

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians