Youssef G. Comair, MD

Medicare activity in 2024

Official CMS public-use data for Youssef G. Comair, 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 a high level of medical decision making, if using time, 60 minutes or more (99205)61 services
2. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)45 services
3. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)32 services
4. Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes (99221)30 services
5. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)22 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%
• Arthritis63%
• Stroke or mini-stroke49%
• Diabetes33%
• Ischemic heart disease31%

Hospitals where Youssef G. Comair works

Medicare's Facility Affiliation Data lists Youssef G. Comair 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.

• Sibley Memorial HospitalWashington, DC · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 090005
• Suburban HospitalBethesda, MD · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 210022
• The University of Chicago Medical CenterChicago, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140088

Practice locations

Addresses where Youssef G. Comair is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 8; the Medicare profile lists all.

• 303 Adclare RdRockville, MD 20850 (301) 279‑9000
• 5255 Loughboro Rd NW, Johns Hopkins at Sibley Memorial HospitalWashington, DC 20016 (202) 660‑6125
• 5255 Loughboro Road NW, Sibley Memorial HospitalWashington, DC 20016 (202) 660‑6500
• 5841 S Maryland AveChicago, IL 60637 (773) 702‑1000
• 600 N Wolf StBaltimore, MD 21287 (410) 955‑5000

Group practices

Medicare enrollment lists Youssef G. Comair as a member of these groups (CMS data updated October 2, 2026).

• Johns Hopkins University2,909 clinicians in the group
• University of Chicago1,712 clinicians in the group
• The University of Chicago Medical Center915 clinicians in the group
• Johns Hopkins University197 clinicians in the group

Specialties

• Neurosurgeryprimary

Find other Neurosurgery doctors in Maryland →

Other neurosurgeons in Maryland

Clinicians with the same Medicare primary specialty in Maryland — not a recommendation.

• Nathan C. Moskowitz, MD
• Teresa Wojtasiewicz, MD
• Gary L. Gallia, MD
• Bernhard Zunkeler, MD
• Lekhaj Daggubati, MD
• Judy Huang, MD
• Roberto Rey Dios, MD
• Jordina Rincon Torroella, MD

All neurosurgeons in Maryland →

Other clinicians in Johns Hopkins University

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

• Alison Ou, OD
• Samantha L. Vogt, MD
• Murugappan Ramanathan, MD
• Alexandra Roginsky Tsesis, MD
• Marianne L. Fingerhood
• Mark N. Wu, 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