Katherine C. Chretien, MD

Hospitals where Katherine C. Chretien works

Medicare's Facility Affiliation Data lists Katherine C. Chretien 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 Johns Hopkins HospitalBaltimore, MD · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 210009

Practice locations

Addresses where Katherine C. Chretien is enrolled with Medicare (CMS data updated October 2, 2026).

• 5601 Lloch Raven BlvdBaltimore, MD 21239 (443) 444‑4714
• 600 N Wolf StBaltimore, MD 21287 (410) 955‑5000
• 600 N Wolfe St, Blalock 266Baltimore, MD 21287 (410) 502‑4340

Group practices

Medicare enrollment lists Katherine C. Chretien as a member of these groups (CMS data updated October 2, 2026).

• Johns Hopkins University2,909 clinicians in the group
• Johns Hopkins University713 clinicians in the group

Specialties

• Hospitalistprimary
• Internal Medicinealso

Find other Hospitalist doctors in Maryland →

Other hospitalists in Baltimore

Clinicians with the same Medicare primary specialty in Baltimore, MD — not a recommendation.

• Aman Gebremedhin, MD
• Jemila R. Venner-Walcott, MD
• Afsheen Siddiqui, MD
• Marita E. Mike, MD
• Jessica Park, MD
• Supal Mehta, MD
• Amteshwar Singh, MD
• Brett J. Schuchardt, MD

All hospitalists in Baltimore →

Other clinicians in Johns Hopkins University

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

• Samuel Alaish, MD
• Marie Defrancesco-Loukas, NP
• Colleen Schreyer
• Han Na Kim, MD
• Wai Lin Lau, CNA
• Devika Agrawal, 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. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
5. Medicare Care Compare — official Medicare tool to look up clinicians