Guadalupe S. Sitjar, MD

Medicare activity in 2024

Official CMS public-use data for Guadalupe S. Sitjar, 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. Physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allow (G0181)510 services
2. Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)433 services
3. Advance care planning, first 30 minutes (99497)246 services
4. Physician or allowed practitioner re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians a (G0179)229 services
5. Chronic care management services for two or more chronic conditions, first 30 minutes provided personally by health care professional, per calendar month (99491)200 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%
• Arthritis75%
• Diabetes70%
• Ischemic heart disease51%
• Heart failure51%

Practice locations

Addresses where Guadalupe S. Sitjar is enrolled with Medicare (CMS data updated October 2, 2026).

• 1580 N Northwest Hwy, Suite 121aPark Ridge, IL 60068 (847) 813‑5779
• 2250 E Devon Ave, Suite 217Des Plaines, IL 60018 (847) 238‑8300

Group practices

Medicare enrollment lists Guadalupe S. Sitjar as a member of these groups (CMS data updated October 2, 2026).

• Infinite Care Home Physicians LLC7 clinicians in the group
• Physicians House Calls7 clinicians in the group

Specialties

• Internal Medicineprimary
• Family Practicealso

Find other Internal Medicine doctors in Illinois →

Other internal medicine doctors in Park Ridge

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

• Jadwiga A. Loj, MD
• Victoria M. Montgomery, DO
• Jeffry Kreamer, DO
• Josiah Eschbach
• Jaroslaw R. Leszczak, MD
• Namrata Singh
• Azmina A. Bhaiji, MD
• Nicoleta E. Speil, MD

All internal medicine doctors in Park Ridge →

Other clinicians in Infinite Care Home Physicians LLC

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

• Ernestine M. Koehn, NP
• Janita M. Simpkins, MD
• Amelia Conte Russian, 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. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
4. Medicare Care Compare — official Medicare tool to look up clinicians