Alan L. Mezey, MD

Medicare activity in 2024

Official CMS public-use data for Alan L. Mezey, 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. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)680 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)136 services
3. Administration of influenza virus vaccine (G0008)65 services
4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)61 services
5. Influenza vaccine, inactivated (90653)59 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%
• Arthritis52%
• Ischemic heart disease32%
• Diabetes28%
• Chronic kidney disease28%

Hospitals where Alan L. Mezey works

Medicare's Facility Affiliation Data lists Alan L. Mezey 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
• Hospital of University of PennsylvaniaPhiladelphia, PA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 390111
• Main Line Hospital LankenauWynnewood, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390195
• Paoli HospitalPaoli, PA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 390153
• Riddle Memorial HospitalMedia, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390222

Practice locations

Addresses where Alan L. Mezey is enrolled with Medicare (CMS data updated October 2, 2026).

• 100 E Lancaster Ave, Suite 210Wynnewood, PA 19096 (610) 649‑1515

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in Pennsylvania →

Other internal medicine doctors in Wynnewood

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

• Casey Dajao, MD
• Amy M. Smith, MD
• Julianna C. Ricco, MD
• Catherine Clarke, MD
• Lucjan O. Lang, DO
• Angela Zaladonis, MD
• David A. Targan, DO
• Stephanie A. Hutchison, DO

All internal medicine doctors in Wynnewood →

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