Stephen G. Zarrelli, MD

Medicare activity in 2024

Official CMS public-use data for Stephen G. Zarrelli, 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 anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)49 services
2. Anesthesia for procedure for total knee joint replacement (01402)43 services
3. Anesthesia for lens surgery (00142)39 services
4. Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)31 services
5. Anesthesia for other procedure on top of arm bone and shoulder joint (01630)27 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%
• Arthritis72%
• Anxiety29%
• Ischemic heart disease25%
• Depression25%

Hospitals where Stephen G. Zarrelli works

Medicare's Facility Affiliation Data lists Stephen G. Zarrelli 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.

• Lehigh Valley HospitalAllentown, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390133
• Surgical Institute of ReadingWyomissing, PA · Acute Care Hospital · Emergency services: not listed by Medicare · CCN 390316

Practice locations

Addresses where Stephen G. Zarrelli is enrolled with Medicare (CMS data updated October 2, 2026).

• 1503 N Cedar Crest BlvdAllentown, PA 18104 (610) 861‑8080
• 2310 Highland AveBethlehem, PA 18020 (610) 861‑8080
• 2752 Century BlvdWyomissing, PA 19610 (610) 378‑8807
• 330 Main StDickson City, PA 18519 (610) 402‑6164

Group practices

Medicare enrollment lists Stephen G. Zarrelli as a member of these groups (CMS data updated October 2, 2026).

• Lehigh Valley Physician Group2,542 clinicians in the group
• Professional Anesthesia Services of North America PC49 clinicians in the group

Specialties

• Anesthesiologyprimary

Find other Anesthesiology doctors in Pennsylvania →

Other anesthesiologists in Allentown

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

• Kris A. Levengood, MD
• Brent McNew, MD
• Bruce D. Levine, MD
• Sanshalee McKay Mathews, MD
• Gregory N. Singleton, MD
• Ferenc Gyulai, MD
• Jodie L. Buxbaum, MD
• Gregory Nelson, DO

All anesthesiologists in Allentown →

Other clinicians in Lehigh Valley Physician Group

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

• Shamsuddin Shaik, MD
• Heather Herron, CSW
• Raechal Rodriguez, PA
• Sara Doyle, DO
• Kenneth P. Rachwal, PA
• Kajal Desai, PA

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