Tierra L. Weglarz, DO

Medicare activity in 2024

Official CMS public-use data for Tierra L. Weglarz, 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. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)15 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)12 services
3. Administration of influenza virus vaccine (G0008)12 services
4. Influenza vaccine, inactivated (90653)11 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 pressure71%
• High cholesterol59%
• Arthritis50%

Hospitals where Tierra L. Weglarz works

Medicare's Facility Affiliation Data lists Tierra L. Weglarz 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.

• Saint Francis Medical CenterPeoria, IL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 140067

Practice locations

Addresses where Tierra L. Weglarz is enrolled with Medicare (CMS data updated October 2, 2026).

• 5111 N Glen Park Place RdPeoria, IL 61614 (309) 683‑5700

Group practices

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

• OSF Multi-Specialty Group2,114 clinicians in the group

Specialties

• Family Practiceprimary

Find other Family Practice doctors in Illinois →

Other family doctors in Peoria

Clinicians with the same Medicare primary specialty in Peoria, IL — not a recommendation.

• Ziad A. Musaitif, DO
• Bridget K. Tesher, DO
• Mfowethu T. Langeni, DO
• Steven S. Norris, MD
• Alain W. Vilatte, MD
• Ketan Morker, MD
• John Lidvall, MD
• Dominique K. Fons, MD

All family doctors in Peoria →

Other clinicians in OSF Multi-Specialty Group

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

• Robert A. Kinzinger, MD
• Stacy R. Marriott
• Lawrence D. Yee
• David L. Crawford, MD
• Aamir I. Malik, MD
• Lawrence P. Prabhaker, 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