Raymond Marcus L. De Guzman, MD

Medicare activity in 2024

Official CMS public-use data for Raymond Marcus L. De Guzman, 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. Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (Q9967)1,495 services
2. Ct scan of abdomen and pelvis with contrast (74177)327 services
3. Ct scan of chest with contrast (71260)208 services
4. Ct scan head or brain without contrast (70450)202 services
5. Limited ultrasound scan of abdomen (76705)97 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 cholesterol71%
• Arthritis51%
• Diabetes41%
• Chronic kidney disease40%
• Ischemic heart disease35%

Hospitals where Raymond Marcus L. De Guzman works

Medicare's Facility Affiliation Data lists Raymond Marcus L. De Guzman 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.

• The University of Chicago Medical CenterChicago, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140088
• UChicago Medicine Northwest IndianaCrown Point, IN · Acute Care Hospital · Emergency services: listed by Medicare · CCN 150195

Practice locations

Addresses where Raymond Marcus L. De Guzman is enrolled with Medicare (CMS data updated October 2, 2026).

• 10855 Virginia StCrown Point, IN 46307 (888) 824‑0200
• 355 E Grand AveChicago, IL 60611 (773) 702‑1000
• 47 W Polk St, Suite G1Chicago, IL 60605 (773) 702‑1000

Group practices

Medicare enrollment lists Raymond Marcus L. De Guzman as a member of this group (CMS data updated October 2, 2026).

• University of Chicago1,712 clinicians in the group

Specialties

• Diagnostic Radiologyprimary

Find other Diagnostic Radiology doctors in Indiana →

Other radiologists in Crown Point

Clinicians with the same Medicare primary specialty in Crown Point, IN — not a recommendation.

• Narayan Sundaram, MD
• Ramana V. Yedavalli, MD
• Edward A. Michals, MD
• Phillip Silberberg, MD
• Matthew J. Gayed, MD
• Irfan Hussain, MD
• Ahmed A. Hamimi, MD
• Larry L. Stover, MD

All radiologists in Crown Point →

Other clinicians in University of Chicago

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

• Hassan Arshad, MD
• Farah Hussain, MD
• Iazsmin B. Ventura, MD
• Craig Majcher, PA
• Andrea N. Shogan, MD
• Cheshire Hardcastle

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