Theresa Dierker, DO

Medicare activity in 2024

Official CMS public-use data for Theresa Dierker, 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)54 services
2. Administration of influenza virus vaccine (G0008)20 services
3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)14 services
4. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)13 services
5. Influenza vaccine, inactivated (90653)12 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 pressure72%
• High cholesterol67%
• Arthritis41%
• Anxiety30%
• Diabetes26%

Hospitals where Theresa Dierker works

Medicare's Facility Affiliation Data lists Theresa Dierker 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.

• Beaumont Hospital - Grosse PointeGrosse Pointe, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 230089
• Beaumont Hospital Royal OakRoyal Oak, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230130
• Beaumont Hospital, TroyTroy, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 230269

Practice locations

Addresses where Theresa Dierker is enrolled with Medicare (CMS data updated October 2, 2026).

• 201 3rd St, Suite 200Belleville, MI 48111 (734) 697‑9065
• 25631 Little Mack Ave, Suite 103Saint Clair Shores, MI 48081 (586) 443‑2333

Group practices

Medicare enrollment lists Theresa Dierker as a member of this group (CMS data updated October 2, 2026).

• Oakwood Ambulatory LLC274 clinicians in the group

Specialties

• Family Practiceprimary

Find other Family Practice doctors in Michigan →

Other family doctors in Belleville

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

• Elizabeth Bavers, MD
• Douglas Grucz, MD
• Letacia D. Thomas, MD
• Eric P. Leikert, DO
• Erik Weitz, DO
• Olivia R. Souphis, MD
• Norman G. Macdermid, DO
• Snezhana Tuxhari, DO

All family doctors in Belleville →

Other clinicians in Oakwood Ambulatory LLC

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

• Elizabeth Bavers, MD
• Lily Go, MD
• Brent M. Fuller, MD
• Tania M. Sadik, MD
• Jianming Lau, MD
• Dana G. Kerges, MD

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