Sarah R. Nassau, MD

Medicare activity in 2024

Official CMS public-use data for Sarah R. Nassau, 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. Pathology examination of tissue using a microscope, intermediate complexity (88305)619 services
2. Special stained specimen slides to examine tissue, each additional procedure (88341)367 services
3. Pathology examination of tissue using a microscope, moderately low complexity (88304)143 services
4. Preparation of tissue for examination by removing any calcium present (88311)131 services
5. Special stained specimen slides to examine tissue, initial procedure (88342)121 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%
• Chronic kidney disease36%
• Diabetes33%
• Ischemic heart disease33%

Hospitals where Sarah R. Nassau works

Medicare's Facility Affiliation Data lists Sarah R. Nassau 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.

• Lancaster General HospitalLancaster, PA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 390100

Practice locations

Addresses where Sarah R. Nassau is enrolled with Medicare (CMS data updated October 2, 2026).

• 555 N Duke St, Penn Medicine Lancaster General Health PathLancaster, PA 17602 (717) 544‑5511

Group practices

Medicare enrollment lists Sarah R. Nassau as a member of this group (CMS data updated October 2, 2026).

• Lancaster General Hospital520 clinicians in the group

Specialties

• Pathologyprimary

Find other Pathology doctors in Pennsylvania →

Other pathologists in Lancaster

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

• Grace W. Weyant, MD
• Debra Grove-Mahoney
• Ashraf A. Abou Elella, MD
• Christopher Preciado, MD
• Charles F. Romberger, MD
• Veronica Merelo Alcocer, MD
• Ronald T. Grenko, MD
• Bruce King, MD

All pathologists in Lancaster →

Other clinicians in Lancaster General Hospital

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

• Alexandra E. Brightbill, CNA
• Pamela Vnenchak, MD
• Joseph Chapman, MD
• Matthew Hatch, CNA
• Dale K. Hursh, MD
• Salvatore Astarita, 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