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Orthopedic Surgery

Kenneth W. Defontes Iii, MD

Works at hospitals in Towson, MD · Maryland

Summary

Dr. Kenneth W. Defontes Iii, MD is an orthopedic surgeon at 12 Newport Dr, Forest Hill, MD 21050. Phone: (410) 569-8587. Accepts Medicare assignment. In 2024, Kenneth W. Defontes Iii had 411 Original Medicare patients and 2,122 services. NPI 1134415706. 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.

  • Specialty: Orthopedic surgeon (Medicare lists Orthopedic Surgery)
  • Address: 12 Newport Dr, Forest Hill, MD 21050 · Directions (4 more locations)
  • Phone: (410) 569‑8587
  • Medicare: Accepts Medicare assignment
  • Hospital: University of MD St Joseph Medical Center
  • Group practice: Agape Physical Therapy and Sports Rehabilitation LP (+1 more)
  • Medical school: Johns Hopkins University School Of Medicine · graduated 2011 (15 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Kenneth W. Defontes Iii, 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 Kenneth W. Defontes Iii accept Medicare assignment?
Yes. Medicare's clinician data says Kenneth W. Defontes Iii 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 Kenneth W. Defontes Iii see?
In 2024, CMS data shows 411 Original Medicare patients and 2,122 services for Kenneth W. Defontes Iii. This counts Original Medicare only and measures volume, not quality.
What is Kenneth W. Defontes Iii's NPI number?
1134415706. 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 Kenneth W. Defontes Iii, 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 patients411
Services billed to Medicare2,122
Different services or procedures93
Participating Medicare providerYes
Average age of these patients73

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)525 services
  2. Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)338 services
  3. X-ray of foot, minimum of 3 views (73630)300 services
  4. X-ray of ankle, minimum of 3 views (73610)289 services
  5. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)115 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 pressure72%
  • Arthritis65%
  • Ischemic heart disease27%
  • Anxiety27%
  • Diabetes25%

Hospitals where Kenneth W. Defontes Iii works

Medicare's Facility Affiliation Data lists Kenneth W. Defontes Iii 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 Kenneth W. Defontes Iii is enrolled with Medicare (CMS data updated October 2, 2026).

  • 12 Newport DrForest Hill, MD 21050
  • 12 Newport Dr, Suite AForest Hill, MD 21050
  • 201 Plumtree Rd, Suite 301Bel Air, MD 21015 (410) 569‑8587
  • 8322 Bellona AveTowson, MD 21204
  • 9110 Philadelphia Rd, Suite 308Rosedale, MD 21237 (410) 569‑8587

Group practices

Medicare enrollment lists Kenneth W. Defontes Iii as a member of these groups (CMS data updated October 2, 2026).

  • Agape Physical Therapy and Sports Rehabilitation LP678 clinicians in the group
  • University of Maryland St. Joseph Orthopaedics, LLC36 clinicians in the group

Specialties

Find other Orthopedic Surgery doctors in Maryland →

Other orthopedic surgeons in Forest Hill

Clinicians with the same Medicare primary specialty in Forest Hill, MD — not a recommendation.

All orthopedic surgeons in Forest Hill →

Other clinicians in Agape Physical Therapy and Sports Rehabilitation LP

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

Clinician information

CredentialMD
Medical schoolJohns Hopkins University School Of Medicine
Graduation year2011 (15 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1134415706
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