![](https://netrf.org/wp-content/uploads/2022/09/Gary-Ulaner-MD-OCR-Image-300x198.jpg)
Gary Ulaner, MD/PhD
Nuclear Medicine/Radiation Oncology
Irvine, CA
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Gary Cohen, MD
Radiology
Philadelphia, PA
![](https://netrf.org/wp-content/uploads/2019/02/George-Fisher-1-234x300.jpg)
George Fisher, MD/PhD
Medical Oncology
Palo Alto, CA
![](https://netrf.org/wp-content/uploads/2019/02/Ghassan-El-Haddad.jpg)
Ghassan El-Haddad, MD
Interventional Radiology
Tampa, FL
![](https://netrf.org/wp-content/uploads/2020/07/karakousis_giorgos.jpg)
Giorgos Karakousis, MD
Surgery
Philadelphia, PA
![](https://netrf.org/wp-content/uploads/2022/09/Pegna-Will_21-214x300.jpg)
Guillaume Pegna, MD
Medical Oncology
Portland, OR
![](https://netrf.org/wp-content/uploads/2019/02/H.-Christian-Weber.jpg)
H. Christian Weber, MD
Gastroenterology
Boston, MA
![](https://netrf.org/wp-content/uploads/2019/02/Hagen-Kennecke-200x300.jpg)
Hagen Kennecke, MD
Medical Oncology
Portland, OR
![](https://netrf.org/wp-content/uploads/2020/02/Connolly_Heidi_M_30X30-250x300.jpg)
Heidi Connolly, MD
Cardiology
Rochester, MN
![](https://netrf.org/wp-content/uploads/2019/12/13031501-010041_Lenz-200x300.jpg)
Heinz-Josef Lenz, MD
Medical Oncology
Los Angeles, CA