Steven A. Istephan, MD

Medicare activity in 2024

Official CMS public-use data for Steven A. Istephan, 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 moderate level of decision making, if using time, 30 minutes or more (99214)319 services
2. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)201 services
3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)98 services
4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)92 services
5. Hemoglobin a1c level (83036)79 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 pressure69%
• High cholesterol67%
• Arthritis40%
• Diabetes28%
• Anxiety27%
• Ischemic heart disease26%

Hospitals where Steven A. Istephan works

Medicare's Facility Affiliation Data lists Steven A. Istephan 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.

• ProMedica Monroe Regional HospitalMonroe, MI · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 230099
• ProMedica Toledo HospitalToledo, OH · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 360068

Practice locations

Addresses where Steven A. Istephan is enrolled with Medicare (CMS data updated October 2, 2026).

• 3175 Smith RdLambertville, MI 48144 (734) 856‑5494
• 419 S Telegraph Rd, Monroe Family MedicineMonroe, MI 48161 (734) 241‑5114

Group practices

Medicare enrollment lists Steven A. Istephan as a member of this group (CMS data updated October 2, 2026).

• ProMedica Monroe Physicians65 clinicians in the group

Specialties

• Family Practiceprimary

Find other Family Practice doctors in Michigan →

Other family doctors in Lambertville

Clinicians with the same Medicare primary specialty in Lambertville, MI — not a recommendation.

• Karar Alameedi, MD
• Michael A. Tilson, MD
• Jijan John, MD
• Marian E. Deames, MD

All family doctors in Lambertville →

Other clinicians in ProMedica Monroe Physicians

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

• Tara M. Baldwin
• Maura A. Crescenzo
• Laith J. Jacob, MD
• Mark D. Sherrard, DO
• Karar Alameedi, MD
• Fatima Younus, DO

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