HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / DC

MARK MARKOWSKI, MD

MEDICAL ONCOLOGY

Medical school: GEORGETOWN UNIVERSITY SCHOOL OF MEDICINE

Graduated: 2009

Also: INTERNAL MEDICINE

Offers telehealth

NPI: 1689809188

Practice Locations (3)

JOHNS HOPKINS UNIVERSITY

5255 LOUGHBORO RD NW

WASHINGTON, DC 200162633

2025374000

JOHNS HOPKINS UNIVERSITY

5255 LOUGHBORO ROAD NW, SIBLEY MEMORIAL HOSPITAL

WASHINGTON, DC 200162633

2026606500

JOHNS HOPKINS UNIVERSITY

8600 OLD GEORGETOWN RD

BETHESDA, MD 208141422

3018963100

Source: CMS National Downloadable File, September 2026.

MARK MARKOWSKI, MD | HealthCareAtlasUSA