Leo Zacharias, MD

Medicare activity in 2024

Official CMS public-use data for Leo Zacharias, 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. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)295 services
2. Insertion of needle into vein for collection of blood sample (36415)106 services
3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)82 services
4. Administration of influenza virus vaccine (G0008)52 services
5. Influenza vaccine, inactivated (90653)40 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%
• Diabetes49%
• Arthritis42%
• Chronic kidney disease29%
• Ischemic heart disease24%

Hospitals where Leo Zacharias works

Medicare's Facility Affiliation Data lists Leo Zacharias 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.

• Mercy Catholic Medical Center- Mercy FitzgeraldDarby, PA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 390156

Practice locations

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

• 1201 Langhorne Newtown RdLanghorne, PA 19047
• 1201 Langhorne Newtown Rd, St Mary Medical CenterLanghorne, PA 19047 (215) 750‑2000
• 1501 Lansdowne AveDarby, PA 19023
• 1503 Lansdowne Ave, Suite 2000Darby, PA 19023 (610) 237‑2529

Group practices

Medicare enrollment lists Leo Zacharias as a member of these groups (CMS data updated October 2, 2026).

• Trinity Health Mid-Atlantic Medical Group334 clinicians in the group
• Mercy Catholic Medical Center of Southeastern PA4 clinicians in the group

Specialties

• Internal Medicineprimary
• Hospitalistalso

Find other Internal Medicine doctors in Pennsylvania →

Other internal medicine doctors in Langhorne

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

• Muhammad Y. Haroon, MD
• Yashveer Lahori, MD
• Ayesha Khan, MD
• Archana Kokroo, MD
• Sion Kim, DO
• Safiyyah Bhatti, MD
• Abdel Hamid Abd El Shafy, MD
• Carol R. Fleischman, MD

All internal medicine doctors in Langhorne →

Other clinicians in Trinity Health Mid-Atlantic Medical Group

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

• Suja Mathew
• Nina Maouelainin, DO
• Dhruvan N. Patel, MD
• James M. Monihan, MD
• Kara Wetzler, NP
• Nathaniel L. Holzman, 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