Quick answers
- Does John J. Lehman Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says John J. Lehman Jr. 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 John J. Lehman Jr. see?
- In 2024, CMS data shows 1,140 Original Medicare patients and 2,298 services for John J. Lehman Jr.. This counts Original Medicare only and measures volume, not quality.
- What is John J. Lehman Jr.'s NPI number?
- 1568480374. 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 John J. Lehman Jr., 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 patients | 1,140 |
|---|---|
| Services billed to Medicare | 2,298 |
| Different services or procedures | 26 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)773 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)634 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)199 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)186 services
- Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician (93016)69 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%
- Arthritis63%
- Ischemic heart disease55%
- Heart failure47%
- Chronic kidney disease45%
Hospitals where John J. Lehman Jr. works
Medicare's Facility Affiliation Data lists John J. Lehman Jr. 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.
- Barnes Jewish HospitalSaint Louis, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260032
- HSHS St Elizabeth's HospitalO Fallon, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140187
- Memorial HospitalBelleville, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140185
- Sparta Community HospitalSparta, IL · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 141349
- Washington County HospitalNashville, IL · Critical Access Hospital · Emergency services: listed by Medicare · CCN 141308
Practice locations
Addresses where John J. Lehman Jr. is enrolled with Medicare (CMS data updated October 2, 2026).
- 4600 Memorial Dr, Suite W1Belleville, IL 62226 (618) 233‑3066
Group practices
Medicare enrollment lists John J. Lehman Jr. as a member of this group (CMS data updated October 2, 2026).
- Fairview Heights Medical Group SC444 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Illinois →
Other cardiologists in Belleville
Clinicians with the same Medicare primary specialty in Belleville, IL — not a recommendation.
Other clinicians in Fairview Heights Medical Group SC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Washington University School Of Medicine |
| Graduation year | 1995 (31 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1568480374 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians