GregoryStephenMerrickMD

Radiation Oncology • New Martinsville, WV

Physician

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Office
3 E Benjamin Dr
New Martinsville, WV 26155
Phone+1 304-243-3000

Fax+1 304-243-3060
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Education & Training

George Washington University School of MedicineResidency, Radiation Oncology, 1986 - 1989
UPMC Medical EducationInternship, Transitional Year, 1985 - 1986
West Virginia University School of MedicineClass of 1985

Certifications & Licensure

WV State Medical License 1989 - 2025
PA State Medical License 1985 - 1986
American Board of Radiology Radiation Oncology

Clinical Trials

Low Dose Supplemental External Radiation With Pd-103 Versus Pd-103 Alone for Prostate Cancer Start of enrollment: 2005 Jan 01
Completed
Phase 3
Implant and External Radiation for Prostate Cancer With or Without Hormonal Therapy: A Prospective Randomized Trial Start of enrollment: 2004 Aug 01
Terminated
Phase 3
Pd-103 Dose De-Escalation for Early Stage Prostate Cancer: A Prospective Randomized Trial Start of enrollment: 2005 Oct 01
Completed
Phase 3

Publications & Presentations

PubMed

1 citations
Outcomes after PD-103 versus I-125 for low dose rate prostate brachytherapy monotherapy: An international, multi-institutional study.
Chad Tang, Jeremiah Sanders, Howard Thames, David M Swanson, Juanita M Crook, Teresa Bruno, Pierre Blanchard, Jay Ciezki, Mira Keyes, Daniel Song, Tanmay Singh, Gregor...> ;Radiotherapy and Oncology. 2023 Jun 1
1 citations
ACR-ABS-ASTRO Practice Parameter for Transperineal Permanent Brachytherapy of Prostate Cancer.
Nathan H J Bittner, Brett W Cox, Brian Davis, Martin King, Colleen A F Lawton, Gregory S Merrick, Peter Orio, Zoubir Ouhib, Peter Rossi, Timothy Showalter, William Sma...> ;American Journal of Clinical Oncology. 2022 Jun 1
15 citations
Interplay Between Duration of Androgen Deprivation Therapy and External Beam Radiotherapy With or Without a Brachytherapy Boost for Optimal Treatment of High-risk Pros...
Amar U Kishan, Alison Steigler, James W Denham, Almudena Zapatero, Araceli Guerrero, David Joseph, Xavier Maldonado, Jessica K Wong, Bradley J Stish, Robert T Dess, Av...> ;JAMA Oncology. 2022 Mar 1
The Relationship Between Androgen Deprivation Therapy Duration and External Beam Radiotherapy With or Without a Brachytherapy Boost in High-Risk Prostate Cancer.
A.U. Kishan, J.K. Wong, Gregory S. Merrick, Phuoc T. Tran, D.J. Demanes, B.J. Stish, Daniel J. Krauss, Trude B. Wedde, Wolfgang Lilleby, Richard G. Stock, Eric M. Horw...> ;International Journal of Radiation Oncology Biology Physics. 2021 Nov 1
1 citations
Prognostic Significance of the Risk of Non-localized Disease on PSMA/PET: Comparative Performance of a Novel, PSMA/PET-Derived Risk Stratification Tool for High-Risk P...
Ting Martin Ma, Michael Xiang, Derya Tilki, Robert Jeffrey Karnes, B.J. Stish, R. Martinez-Monge, Rahul D. Tendulkar, E.A. Klein, Phuoc T. Tran, Jeffrey J. Tosoian, Al...> ;International Journal of Radiation Oncology Biology Physics. 2021 Nov 1
23 citations
Low dose rate brachytherapy for primary treatment of localized prostate cancer: A systemic review and executive summary of an evidence-based consensus statement.
Martin T. King, Mira Keyes, Steven J. Frank, Juanita Crook, Wayne M. Butler, Peter J. Rossi, Brett Cox, Timothy N. Showalter, Firas Mourtada, Louis Potters, Richard G....> ;Brachytherapy. 2021 Sep 9
6 citations
Comparison of Multimodal Therapies and Outcomes Among Patients With High-Risk Prostate Cancer With Adverse Clinicopathologic Features.
Amar U. Kishan, R. Jeffrey Karnes, Tahmineh Romero, J.K. Wong, Giovanni Motterle, Jeffrey J. Tosoian, Bruce J. Trock, Eric A. Klein, Bradley J. Stish, Robert T. Dess, ...> ;JAMA Network Open. 2021 Jul 1
3 citations
The Impact of Body Mass Index on Freedom From Therapeutic Intervention and Quality of Life in Active Surveillance Prostate Cancer Patients
Gregory S. Merrick, Robert W. Galbreath, Ryan Fiano, Whitney Scholl, Abbey Bennett, Wayne M. Butler, Brian S. Kurko, Edward Adamovich> ;American Journal of Clinical Oncology. 2021 Jun 7
12 citations
Patterns of Clinical Progression in Radiorecurrent High-risk Prostate Cancer.
R. Philipson, Tahmineh Romero, J.K. Wong, Bradley J. Stish, Robert T. Dess, Daniel E. Spratt, Avinash Pilar, Chandana A. Reddy, Trude B. Wedde, Wolfgang Lilleby, Ryan ...> ;European Urology. 2021 May 10
4 citations
Effect of the timing of hydrogel spacer placement on prostate and rectal dosimetry of low-dose-rate brachytherapy implants.
Wayne M. Butler, Brian S. Kurko, Whitney Scholl, Gregory S. Merrick> ;Journal of Contemporary Brachytherapy. 2021 Apr 14
1 citations
The impact of age on prostate cancer progression and quality of life in active surveillance patients.
Gregory S Merrick, Gabe Rohmann, Robert Galbreath, Whitney Scholl, Ryan Fiano, Abbey Bennett, Wayne M Butler, Edward Adamovich> ;BJUI Compass. 2021 Mar 1
CT-PLANNED transperineal prostate BIOPSY IN patients without a rectum.
Gregory S. Merrick, Brian Kurko, Whitney Scholl, Wayne M. Butler, E. Adamovich> ;Urology Case Reports. 2020 Sep 11
Associations of multimorbidity and patient-reported experiences of care with conservative management among elderly patients with localized prostate cancer.
Ryan M. Fiano, Gregory S. Merrick, Kim E. Innes, Malcolm D. Mattes, Traci LeMasters, Chan Shen, Usha Sambamoorthi> ;Cancer Medicine. 2020 Aug 1
2 citations
ACR Stakeholder Prostate Summit.
Jeffrey C. Weinreb, Peter L. Choyke, Andrei Iagaru, Joseph E. Ippolito, Mark E. Lockhart, Gregory S. Merrick, Sean Sachdev, Ezequiel Silva, Samir S. Taneja, Clare M. T...> ;Journal of the American College of Radiology. 2020 Apr 29
40 citations
A biochemical definition of cure after brachytherapy for prostate cancer
Juanita Crook, Chad Tang, Howard D. Thames, Pierre Blanchard, Jeremiah Sanders, Jay P. Ciezki, Mira Keyes, W. James Morris, Gregory S. Merrick, Charles Catton, Hamid R...> ;Radiotherapy and Oncology. 2020 Aug 1
4 citations
Active surveillance outcomes in prostate cancer patients: the use of transperineal template-guided mapping biopsy for patient selection.
Gregory S. Merrick, Ava Tennant, Ryan Fiano, Abbey Bennett, Richard L. Anderson, Robert W. Galbreath, Wayne M. Butler, Edward Adamovich> ;World Journal of Urology. 2020 Feb 1
4 citations
The narrow door of success.
Gregory S. Merrick> ;Brachytherapy. 2020 Jan 1
16 citations
Prostate-only Versus Whole-pelvis Radiation with or Without a Brachytherapy Boost for Gleason Grade Group 5 Prostate Cancer: A Retrospective Analysis
Kiri A. Sandler, Ryan Cook, Jay P. Ciezki, Ashley E. Ross, Mark Pomerantz, Paul L. Nguyen, Talha Shaikh, Phuoc T. Tran, Richard G. Stock, Gregory S. Merrick, D.J. Dema...> ;European Urology. 2020 Jan 1
3 citations
Application of a Prognostic Stratification System for High-risk Prostate Cancer to Patients Treated With Radiotherapy: Implications for Treatment Optimization.
Benjamin Foster, William C. Jackson, Corey C. Foster, Robert T. Dess, Eyad Abu-Isa, Gregory S. Merrick, Jason W.D. Hearn, Daniel E. Spratt, Stanley L. Liauw, Daniel A....> ;American Journal of Clinical Oncology. 2019 Apr 1
8 citations
Clinical Outcomes for Patients With Gleason Score 10 Prostate Adenocarcinoma: Results From a Multi-institutional Consortium Study
Kiri A. Sandler, Ryan Cook, Jay P. Ciezki, Ashley E. Ross, Mark Pomerantz, Paul L. Nguyen, Talha Shaikh, Phuoc T. Tran, Richard G. Stock, Gregory S. Merrick, D. Jeffre...> ;International Journal of Radiation Oncology, Biology, Physics. 2017 Oct 1
221 citations
Radical Prostatectomy, External Beam Radiotherapy, or External Beam Radiotherapy With Brachytherapy Boost and Disease Progression and Mortality in Patients With Gleaso...
Amar U. Kishan, Ryan Cook, Jay P. Ciezki, Ashley E. Ross, Mark Pomerantz, Paul L. Nguyen, Talha Shaikh, Phuoc T. Tran, Kiri A. Sandler, Richard G. Stock, Gregory S. Me...> ;JAMA. 2018 Mar 6
5 citations
Does supplemental external beam radiation therapy impact urinary, bowel, and erectile function following permanent prostate brachytherapy?: results of two prospective ...
Gregory S. Merrick, Ava Tennant, Kent E. Wallner, Robert W. Galbreath, Wayne M. Butler, Ryan Fiano, Edward Adamovich> ;Journal of Contemporary Brachytherapy. 2017 Oct 19
2 citations
Prostate cancer-specific death in brachytherapy treated high-risk patients stratified by pre-treatment PSA.
Gregory S. Merrick, Robert W. Galbreath, Wayne M. Butler, Ryan Fiano, Edward Adamovich> ;Journal of Contemporary Brachytherapy. 2017 Aug 30
3 citations
Metformin Does Not Predict for Prostate Cancer Diagnosis, Grade, or Volume of Disease After Transperineal Template-guided Mapping Biopsy.
Gregory S. Merrick, Abbey Bennett, Travis Couture, Wayne M. Butler, Robert W. Galbreath, Edward Adamovich> ;American Journal of Clinical Oncology. 2017 Aug 1
45 citations
American Brachytherapy Society Task Group Report: Use of androgen deprivation therapy with prostate brachytherapy-A systematic literature review.
Mira Keyes, Gregory S. Merrick, Steven J. Frank, Peter D. Grimm, Michael J. Zelefsky> ;Brachytherapy. 2017 Mar 1
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