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Orthopedic Surgery

Theodore L. Schoenfeldt, MD

Works at hospitals in Libertyville, IL · Lake Forest, IL · Illinois

Summary

Dr. Theodore L. Schoenfeldt, MD is an orthopedic surgeon at 350 S Greenleaf St, Suite 405, Gurnee, IL 60031. Phone: (847) 336-3335. May accept Medicare assignment. In 2024, Theodore L. Schoenfeldt had 224 Original Medicare patients and 687 services. NPI 1366946881. 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 Theodore L. Schoenfeldt, 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 Theodore L. Schoenfeldt accept Medicare assignment?
Medicare's clinician data says Theodore L. Schoenfeldt may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
How many Medicare patients does Theodore L. Schoenfeldt see?
In 2024, CMS data shows 224 Original Medicare patients and 687 services for Theodore L. Schoenfeldt. This counts Original Medicare only and measures volume, not quality.
What is Theodore L. Schoenfeldt's NPI number?
1366946881. 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 Theodore L. Schoenfeldt, 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 patients224
Services billed to Medicare687
Different services or procedures86
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg (J0702)105 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)98 services
  3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)72 services
  4. X-ray of hand, minimum of 3 views (73130)61 services
  5. X-ray of wrist, minimum of 3 views (73110)46 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 pressure71%
  • Arthritis62%
  • Diabetes34%
  • Depression28%
  • Anxiety24%

Hospitals where Theodore L. Schoenfeldt works

Medicare's Facility Affiliation Data lists Theodore L. Schoenfeldt 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 Theodore L. Schoenfeldt is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Theodore L. Schoenfeldt as a member of this group (CMS data updated October 2, 2026).

  • Illinois Bone and Joint Institute, LLC604 clinicians in the group

Specialties

Find other Orthopedic Surgery doctors in Illinois →

Other orthopedic surgeons in Illinois

Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.

All orthopedic surgeons in Illinois →

Other clinicians in Illinois Bone and Joint Institute, LLC

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

Clinician information

CredentialMD
Graduation year2018 (8 years since medical school)
Gender (as listed)Male
Medicare assignmentMay accept for some services
TelehealthOffers telehealth services
NPI (National Provider Identifier)1366946881
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