Quick answers
- Does William C. Finneran Iii accept Medicare assignment?
- Yes. Medicare's clinician data says William C. Finneran Iii accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does William C. Finneran Iii see?
- In 2024, CMS data shows 1,289 Original Medicare patients and 1,767 services for William C. Finneran Iii. This counts Original Medicare only and measures volume, not quality.
- What is William C. Finneran Iii's NPI number?
- 1144209586. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for William C. Finneran Iii, 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.
| Original Medicare patients | 1,289 |
|---|---|
| Services billed to Medicare | 1,767 |
| Different services or procedures | 36 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)608 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)219 services
- New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)147 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)109 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)95 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%
- Ischemic heart disease52%
- Arthritis51%
- Atrial fibrillation39%
- Chronic kidney disease34%
Hospitals where William C. Finneran Iii works
Medicare's Facility Affiliation Data lists William C. Finneran Iii 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
- Reading HospitalWest Reading, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390044
- WellSpan Ephrata Community HospitalEphrata, PA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 390225
Practice locations
Addresses where William C. Finneran Iii is enrolled with Medicare (CMS data updated October 2, 2026).
- 217 Harrisburg AveLancaster, PA 17603 (717) 544‑8300
Group practices
Medicare enrollment lists William C. Finneran Iii as a member of this group (CMS data updated October 2, 2026).
- The Heart Group of Lancaster General Health64 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Pennsylvania →
Other cardiologists in Lancaster
Clinicians with the same Medicare primary specialty in Lancaster, PA — not a recommendation.
Other clinicians in The Heart Group of Lancaster General Health
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Georgetown University School Of Medicine |
| Graduation year | 1991 (35 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1144209586 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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