Radiation Oncology
Rachit Kumar, MD
Johns Hopkins Kimmel Cancer Center
Dr. Rachit Kumar is a radiation oncologist and assistant professor of radiation oncology and molecular radiation sciences at the Johns Hopkins University School of Medicine, and a member of the Johns Hopkins Kimmel Cancer Center.
Why patients choose Dr. Kumar
Dr. Kumar earned his medical degree from the University of Arizona College of Medicine in Phoenix and completed his radiation oncology residency at Johns Hopkins. He specializes in genitourinary and gastrointestinal cancers and treats patients at both Suburban Hospital in Bethesda and Sibley Memorial Hospital. He is frequently published in peer-reviewed journals on new radiation-therapy methods and their impact on patient outcomes.
Clinical focus
Radiation therapy for genitourinary and gastrointestinal cancers.
Profile last fact-checked July 17, 2026. Information reflects publicly available sources and may change. Confirm details directly with the practice before booking.
How Dr. Kumar compares
Context from the 139 providers we track across Bethesda and Montgomery County.
The only provider we list offering gastrointestinal cancers
1 of the 130 providers who list their focus areas name gastrointestinal cancers.
The only University of Arizona College of Medicine – Phoenix graduate we list
1 of the 107 doctors whose medical school we record studied at University of Arizona College of Medicine – Phoenix.
1 of 2 we list at Johns Hopkins Kimmel Cancer Center
We cover 2 providers at Johns Hopkins Kimmel Cancer Center.
We list 4 radiation oncology providers serving Bethesda.
Trained in the DC–Baltimore area
Completed residency locally, like 32% of the 87 doctors whose residency we record.
3rd most recently qualified of our 6 radiation oncology providers
Qualified in 2009. The median for the 6 radiation oncology providers whose year we record is 2007.
Medical school: University of Arizona College of Medicine – Phoenix — Phoenix, AZ, United States.
Figures describe the 139 providers currently in the MyBethesdaDoctor registry as of August 2026 — a curated directory, not a census of every doctor in Montgomery County. How we build this list.
Where Dr. Kumar sits by experience
Dr. Kumar finished medical school in 2009, 17 years ago. Of the 135 providers in our registry whose graduation year we could verify, 108 finished earlier, 23 finished later, and 3 finished the same year.
1965–69
1 provider finished 1965–19691970–74
2 providers finished 1970–19741975–79
4 providers finished 1975–19791980–84
13 providers finished 1980–19841985–89
12 providers finished 1985–19891990–94
14 providers finished 1990–19941995–99
27 providers finished 1995–19992000–04
20 providers finished 2000–2004Dr. Kumar2009
2005–09
19 providers finished 2005–20092010–14
17 providers finished 2010–20142015–19
4 providers finished 2015–20192020–24
2 providers finished 2020–2024Among the 110 physicians we list, 95 finished medical school earlier — the median for that group is 1998.
All 12 bands
| Graduated | Providers |
|---|---|
| 1965–1969 | 1 |
| 1970–1974 | 2 |
| 1975–1979 | 4 |
| 1980–1984 | 13 |
| 1985–1989 | 12 |
| 1990–1994 | 14 |
| 1995–1999 | 27 |
| 2000–2004 | 20 |
| 2005–2009 — Dr. Kumar | 19 |
| 2010–2014 | 17 |
| 2015–2019 | 4 |
| 2020–2024 | 2 |
Figures describe the 139 providers currently in the MyBethesdaDoctor registry as of August 2026 — a curated directory, not a census of every doctor in Montgomery County. Based on the 135 of 139 profiles with a graduation year we could verify against a primary source; the remaining 4 are left out rather than estimated. How we build this list.
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