Radiation Oncology
Sheela Modin, MD, PhD
Holy Cross Health Cancer Center
Dr. Sheela Modin is the medical director of radiation oncology services at the Holy Cross Health Cancer Center in Silver Spring and Chief of Women’s Brachytherapy Services, with more than 30 years of experience.
Why patients choose Dr. Modin
Dr. Modin led the effort to bring advanced radiation technology to Holy Cross, setting a new standard for cancer treatment in Montgomery County. She has extensive expertise in brachytherapy for breast and gynecologic cancers, lung cancers, and stereotactic radiosurgery (SRS) and stereotactic body radiation therapy (SBRT). She completed her doctoral training in Canada before her long career in radiation oncology.
Clinical focus
Brachytherapy for breast and gynecologic cancers, lung cancer, and stereotactic radiosurgery (SRS/SBRT).
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. Modin compares
Context from the 139 providers we track across Bethesda and Montgomery County.
The only one we list in Silver Spring
The only radiation oncology provider in our registry serving Silver Spring.
The only provider we list offering brachytherapy
1 of the 130 providers who list their focus areas name brachytherapy.
Longest since qualifying of our 6 radiation oncology providers
Qualified in 1991. The median for the 6 radiation oncology providers whose year we record is 2007.
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. Modin sits by experience
Dr. Modin finished medical school in 1991, 35 years ago. Of the 135 providers in our registry whose graduation year we could verify, 33 finished earlier, 98 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 1985–1989Dr. Modin1991
1990–94
14 providers finished 1990–19941995–99
27 providers finished 1995–19992000–04
20 providers finished 2000–20042005–09
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, 30 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 — Dr. Modin | 14 |
| 1995–1999 | 27 |
| 2000–2004 | 20 |
| 2005–2009 | 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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