Grant D. Sievertsen, MD

Medicare activity in 2024

Official CMS public-use data for Grant D. Sievertsen, 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. Injection, denosumab, 1 mg (J0897)2,760 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)1,325 services
3. Insertion of needle into vein for collection of blood sample (36415)964 services
4. Blood test, comprehensive group of blood chemicals (80053)806 services
5. Blood test, thyroid stimulating hormone (tsh) (84443)766 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 pressure73%
• Diabetes35%
• Arthritis35%
• Ischemic heart disease26%
• Chronic kidney disease22%

Hospitals where Grant D. Sievertsen works

Medicare's Facility Affiliation Data lists Grant D. Sievertsen 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.

• UChicago Medicine AdventHealth HinsdaleHinsdale, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140122

Practice locations

Addresses where Grant D. Sievertsen is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.

• 1325 N Meacham RdSchaumburg, IL 60173 (630) 469‑9200
• 17495 La Grange RdTinley Park, IL 60487 (708) 226‑7000
• 2100 Glenwood AveJoliet, IL 60435 (815) 725‑2121
• 30 Stratford DrBloomingdale, IL 60108 (630) 893‑2210
• 40 S Clay StHinsdale, IL 60521

Group practices

Medicare enrollment lists Grant D. Sievertsen as a member of this group (CMS data updated October 2, 2026).

• Dupage Medical Group Ltd1,322 clinicians in the group

Specialties

• Internal Medicineprimary
• Endocrinologyalso

Find other Internal Medicine doctors in Illinois →

Other internal medicine doctors in Schaumburg

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

• William H. Mollohan, DO
• Darryl V. Link, MD
• Niraja Reddy, MD
• Sonal G. Patel, DO
• Matthew A. Strauch, DO
• Prerana Panchal, MD
• Patrick M. Mackey, MD
• William J. Will, MD

All internal medicine doctors in Schaumburg →

Other clinicians in Dupage Medical Group Ltd

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

• Jennifer Dziatkowiec, CSW
• Colin W. Sumida, MD
• Daniel Wahlstrom, MD
• Toral D. Patel, MD
• Carly Richards, MD
• Cody Braun, 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