Ann Marie Lobo-Chan, MD

Medicare activity in 2024

Official CMS public-use data for Ann Marie Lobo-Chan, 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 low level od decision making, if using time, 20 minutes or more (99213)75 services
2. Imaging of retina (92134)73 services
3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)62 services
4. Established patient complete exam of visual system (92014)26 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 cholesterol74%
• Arthritis56%
• Diabetes49%
• Chronic kidney disease31%
• Heart failure28%

Hospitals where Ann Marie Lobo-Chan works

Medicare's Facility Affiliation Data lists Ann Marie Lobo-Chan 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.

• John H Stroger Jr HospitalChicago, IL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 140124
• University of Illinois Hospital and ClinicsChicago, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140150

Practice locations

Addresses where Ann Marie Lobo-Chan is enrolled with Medicare (CMS data updated October 2, 2026).

• 1855 W Taylor St, Mc648Chicago, IL 60612 (312) 996‑6590
• 1901 W Harrison StChicago, IL 60612 (312) 633‑7292

Group practices

Medicare enrollment lists Ann Marie Lobo-Chan as a member of these groups (CMS data updated October 2, 2026).

• The Board of Trustees of the University of Illinois1,150 clinicians in the group
• Cook County788 clinicians in the group

Specialties

• Ophthalmologyprimary

Find other Ophthalmology doctors in Illinois →

Other ophthalmologists in Chicago

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

• Brian J. Jacobs, MD
• Ronald S. Weiss, MD
• Jingtao J. Guo, MD
• Kathryn Winkler, MD
• Daniel A. Balikov, MD
• Rajakumari P. Selvaraj, MD
• Thomas D. Patrianakos, DO
• Diany S. Morales, MD

All ophthalmologists in Chicago →

Other clinicians in The Board of Trustees of the University of Illinois

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

• Lisa Y. Shimotake, MD
• Joshua B. Katz, MD
• Jean M. Arzbaecher, CNS
• Ashleigh M. Weyh, MD
• Penelope A. Sandiford, MD
• Karolina Plonowska- Hirschfeld, 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