Mercedes I. Lioni, MD

Medicare activity in 2024

Official CMS public-use data for Mercedes I. Lioni, 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)1,547 services
2. Special stained specimen slides to examine tissue, each additional procedure (88341)282 services
3. Special stained specimen slides to examine tissue, initial procedure (88342)273 services
4. Special stained specimen slides to examine tissue, each multiplex procedure (88344)134 services
5. Pathology examination of tissue using a microscope, moderately high complexity (88307)118 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 pressure70%
• Arthritis46%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)30%
• Ischemic heart disease27%
• Anxiety27%

Hospitals where Mercedes I. Lioni works

Medicare's Facility Affiliation Data lists Mercedes I. Lioni 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.

• Doylestown HospitalDoylestown, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390203

Practice locations

Addresses where Mercedes I. Lioni is enrolled with Medicare (CMS data updated October 2, 2026).

• 3400 Spruce St, Department of Pathology and Lab MedicinePhiladelphia, PA 19104 (215) 662‑6503

Group practices

Medicare enrollment lists Mercedes I. Lioni as a member of this group (CMS data updated October 2, 2026).

• University of Penn - Medical Group3,505 clinicians in the group

Specialties

• Pathologyprimary

Find other Pathology doctors in Pennsylvania →

Other pathologists in Philadelphia

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

• Sravanthi Lavu, MD
• Narek Israelyan, MD
• Serena M. Walker, MD
• Zhaohai Yang, MD
• Lauren E. Schwartz, MD
• Rajeswari Nagarathinam, MD
• Carina Dehner, MD
• Hormoz Ehya, MD

All pathologists in Philadelphia →

Other clinicians in University of Penn - Medical Group

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

• Rachel E. Kishton, MD
• Gamil S. Hanna, MD
• Scott Manaker, MD
• Jessica Weatherwax, NP
• Joseph Ladines-Lim, MD
• April Dengler, NP

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