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Orthopedic Surgery

Miltiadis H. Zgonis, MD

Works at hospitals in West Chester, PA · Philadelphia, PA · Pennsylvania

Summary

Dr. Miltiadis H. Zgonis, MD is an orthopedic surgeon at 250 King of Prussia Rd, Radnor, PA 19087. Phone: (610) 902-5600. Accepts Medicare assignment. In 2024, Miltiadis H. Zgonis had 154 Original Medicare patients and 544 services. NPI 1538229117. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Miltiadis H. Zgonis, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Miltiadis H. Zgonis accept Medicare assignment?
Yes. Medicare's clinician data says Miltiadis H. Zgonis accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Miltiadis H. Zgonis see?
In 2024, CMS data shows 154 Original Medicare patients and 544 services for Miltiadis H. Zgonis. This counts Original Medicare only and measures volume, not quality.
What is Miltiadis H. Zgonis's NPI number?
1538229117. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Miltiadis H. Zgonis, 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.

Original Medicare patients154
Services billed to Medicare544
Different services or procedures17
Participating Medicare providerYes
Average age of these patients68

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)130 services
  2. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)51 services
  3. Aspiration and/or injection of fluid from large joint (20610)35 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%
  • Arthritis61%
  • High blood pressure56%
  • Ischemic heart disease25%
  • Anxiety18%
  • Diabetes14%

Hospitals where Miltiadis H. Zgonis works

Medicare's Facility Affiliation Data lists Miltiadis H. Zgonis 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.

Practice locations

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

Group practices

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

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

Specialties

Find other Orthopedic Surgery doctors in Pennsylvania →

Other orthopedic surgeons in Radnor

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

All orthopedic surgeons in Radnor →

Other clinicians in University of Penn - Medical Group

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

Clinician information

CredentialMD
Medical schoolAlbany Medical College Of Union University
Graduation year2004 (22 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1538229117
CorrectionsReport an error or suggest an update →

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