Paul H. Nancollas, MD

Medicare activity in 2024

Official CMS public-use data for Paul H. Nancollas, 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. Imaging of retina with remote review by physician (92228)769 services
2. Established patient complete exam of visual system (92014)269 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)166 services
4. New patient complete exam of visual system (92004)52 services
5. Exam of visual field with extended testing (92083)30 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%
• Diabetes75%
• Chronic kidney disease36%
• Arthritis33%
• Ischemic heart disease26%

Hospitals where Paul H. Nancollas works

Medicare's Facility Affiliation Data lists Paul H. Nancollas 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.

• Geisinger-Lewistown HospitalLewistown, PA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 390048

Practice locations

Addresses where Paul H. Nancollas is enrolled with Medicare (CMS data updated October 2, 2026).

• 21 Geisinger LnLewistown, PA 17044 (717) 242‑4200

Group practices

Medicare enrollment lists Paul H. Nancollas as a member of this group (CMS data updated October 2, 2026).

• Geisinger Clinic3,467 clinicians in the group

Specialties

• Ophthalmologyprimary

Find other Ophthalmology doctors in Pennsylvania →

Other ophthalmologists in Pennsylvania

Clinicians with the same Medicare primary specialty in Pennsylvania — not a recommendation.

• Alan D. Gordon, MD
• Eydie G. Miller, MD
• Steven B. Siepser, MD
• John B. Fileta, MD
• Christine A. Chung, MD
• David L. Galiani, MD
• Christopher W. Ahmed, MD
• Richard L. Jahnle, MD

All ophthalmologists in Pennsylvania →

Other clinicians in Geisinger Clinic

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

• Sabeen S. Haque, MD
• Stacy L. Rosenberg, MD
• Greg F. Burke, MD
• Hasan Zerti, MD
• Ashley A. Pecora, CSW
• John W. Ross, DO

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