Gerald A. Isenberg, MD

Medicare activity in 2024

Official CMS public-use data for Gerald A. Isenberg, 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. Injection of hemorrhoid (46500)135 services
2. Diagnostic exam of anus using an endoscope (46600)67 services
3. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)58 services
4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)40 services
5. Colorectal cancer screening; colonoscopy on individual at high risk (G0105)32 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 cholesterol75%
• High blood pressure69%
• Arthritis45%
• Anxiety29%
• Ischemic heart disease28%
• Diabetes27%

Hospitals where Gerald A. Isenberg works

Medicare's Facility Affiliation Data lists Gerald A. Isenberg 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.

• Bryn Mawr HospitalBryn Mawr, PA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 390139
• Thomas Jefferson University HospitalPhiladelphia, PA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 390174

Practice locations

Addresses where Gerald A. Isenberg is enrolled with Medicare (CMS data updated October 2, 2026).

• 255 W Lancaster Ave, Suite 331 Paoli Mob IIIPaoli, PA 19301 (610) 325‑3880

Group practices

Medicare enrollment lists Gerald A. Isenberg as a member of this group (CMS data updated October 2, 2026).

• Main Line Healthcare1,184 clinicians in the group

Specialties

• Colorectal Surgery (Proctology)primary

Find other Colorectal Surgery (Proctology) doctors in Pennsylvania →

Other colorectal surgeons in Pennsylvania

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

• Reece K. Dehaan, MD
• Kevin J. McKenna, MD
• Nicholas Peterson, MD
• Soo Y. Kim, MD
• Edward J. Glennon, MD
• Barry J. Pernikoff, MD
• Henry P. Schoonyoung, MD
• Laura Cooper, MD

All colorectal surgeons in Pennsylvania →

Other clinicians in Main Line Healthcare

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

• Jennifer L. Flom, DO
• Lori Kleiman, PA
• Colleen M. Kivitz, NP
• David Berkson, MD
• Mihail T. Petrov, PA
• Maziar Seyedian, 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