Germaine C. Lancaster-Mar Fan, MD

Medicare activity in 2024

Official CMS public-use data for Germaine C. Lancaster-Mar Fan, 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. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)185 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)110 services
3. Hospital discharge day management, more than 30 minutes (99239)41 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%
• Arthritis59%
• Heart failure50%
• Anxiety49%
• Ischemic heart disease48%

Hospitals where Germaine C. Lancaster-Mar Fan works

Medicare's Facility Affiliation Data lists Germaine C. Lancaster-Mar Fan 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.

• WellSpan Evangelical Community HospitalLewisburg, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390013

Practice locations

Addresses where Germaine C. Lancaster-Mar Fan is enrolled with Medicare (CMS data updated October 2, 2026).

• 1 Hospital DrLewisburg, PA 17837 (570) 522‑2641
• 25 Monument RdYork, PA 17403

Group practices

Medicare enrollment lists Germaine C. Lancaster-Mar Fan as a member of these groups (CMS data updated October 2, 2026).

• WellSpan Medical Group2,480 clinicians in the group
• Evangelical Medical Services Organization248 clinicians in the group

Specialties

• Hospitalistprimary

Find other Hospitalist doctors in Pennsylvania →

Other hospitalists in Lewisburg

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

• Kathryn M. Giorgini, DO
• William K. Flatley, DO
• George H. Baffoe Bonnie, MD
• Christopher R. Moll, DO
• Shalanki Baiswar, MD
• Thomas Smith, MD
• Seth I. Weber, MD
• Mohamed Hassan, MD

All hospitalists in Lewisburg →

Other clinicians in WellSpan Medical Group

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

• Lillenne Caskey
• Daniel S. Henriksen, MD
• Ney Gore, MD
• Teresa M. Angel, NP
• Michael Adu, DO
• David E. Jamison, 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