Riddle
Doctors Office: This is where you go for regular check-ups and consultations.
Endoscopy Center: This is where you go for medical procedures, including colonoscopies, ultrasounds, studies, and more.
1088 West Baltimore Pike, HCCII, Suite 2407, Media, PA 19063 Get Directions
Office Information
OFFICE HOURS

MD: A doctor of medicine, also known as an M.D., graduated from a traditional medical school.
DO: A doctor of osteopathic medicine graduated from a U.S. osteopathic medical school.
Advanced practice providers, including nurse practitioners and physician assistants are healthcare professionals who have advanced degrees and clinical training. In addition to examining and educating patients, they can order tests, prescribe medications and perform certain procedures.
Muhammad Virk, MD
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MD: A doctor of medicine, also known as an M.D., graduated from a traditional medical school.
DO: A doctor of osteopathic medicine graduated from a U.S. osteopathic medical school.
Advanced practice providers, including nurse practitioners and physician assistants are healthcare professionals who have advanced degrees and clinical training. In addition to examining and educating patients, they can order tests, prescribe medications and perform certain procedures.
William Huntington, DO
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MD: A doctor of medicine, also known as an M.D., graduated from a traditional medical school.
DO: A doctor of osteopathic medicine graduated from a U.S. osteopathic medical school.
Advanced practice providers, including nurse practitioners and physician assistants are healthcare professionals who have advanced degrees and clinical training. In addition to examining and educating patients, they can order tests, prescribe medications and perform certain procedures.
Maura Barr, DO
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MD: A doctor of medicine, also known as an M.D., graduated from a traditional medical school.
DO: A doctor of osteopathic medicine graduated from a U.S. osteopathic medical school.
Advanced practice providers, including nurse practitioners and physician assistants are healthcare professionals who have advanced degrees and clinical training. In addition to examining and educating patients, they can order tests, prescribe medications and perform certain procedures.
Stuart Barish, MD, FACG
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MD: A doctor of medicine, also known as an M.D., graduated from a traditional medical school.
DO: A doctor of osteopathic medicine graduated from a U.S. osteopathic medical school.
Advanced practice providers, including nurse practitioners and physician assistants are healthcare professionals who have advanced degrees and clinical training. In addition to examining and educating patients, they can order tests, prescribe medications and perform certain procedures.
Carolyn Evancho, PA-C
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MD: A doctor of medicine, also known as an M.D., graduated from a traditional medical school.
DO: A doctor of osteopathic medicine graduated from a U.S. osteopathic medical school.
Advanced practice providers, including nurse practitioners and physician assistants are healthcare professionals who have advanced degrees and clinical training. In addition to examining and educating patients, they can order tests, prescribe medications and perform certain procedures.
Joseph J. Herdman, MD
Go to provider profilePatient Forms
Prep Instructions for Procedures
- USDH Colon (363 KB)
- USDH Colonoscopy Sutab Instructions (347 KB)
- USDH Colonoscopy Clenpiq Instructions (307 KB)
- USDH Colonoscopy Plenvu Instructions (325 KB)
- USDH Colonoscopy Suprep Instructions (327 KB)
- USDH Colon and EGD Prep (373 KB)
- USDH Flexible Sigmoidoscopy Mag Citrate Instructions (301 KB)
- USDH Flexible Sigmoidoscopy Miralax Instructions (313 KB)
- USDH Colonoscopy Prep Instructions 2 Day Prep (365 KB)
- USDH Colonoscopy EGD Clenpiq (291 KB)
- USDH Colonoscopy EGD Golytely 4 Liter Instructions (303 KB)
- USDH Colonoscopy EGD Plenvu (311 KB)
- USDH Colonoscopy EGD Sutab (330 KB)
- USDH Colonoscopy Golytely Instructions (319 KB)
- USDH Colonoscopy Suprep Instructions (327 KB)
- MiraLax Gatorade Standard Prep (88 KB)
- Español llts Colonoscopy instrucciones de preparación PM procedimiento (238 KB)
- Español llts Colonoscopy instrucciones de preparación 2 preparación del día (227 KB)
- Español llts Colonoscopy instrucciones de preparación AM procedimiento (62 KB)
- Español llts Flex Sig instrucciones de preparación Miralax (216 KB)
- lEspañol lts EGD and Colonoscopy instrucciones de preparación PM procedimiento (70 KB)
- Español llts Flex Sig instrucciones de preparación Miralax 2 (68 KB)
- Español llts Flex Sig instrucciones de preparación Magnesium Citrate (44 KB)
- Español llts Colonoscopy instrucciones de preparación PM procedimiento (75 KB)
- Español llts Flex Sig instrucciones de preparación Magnesium Citrate 2 (208 KB)
- Español llts Colonoscopy instrucciones de preparación AM procedimiento (234 KB)
- Español llts EGD and Colonoscopy instrucciones de preparación PM procedimiento (238 KB)
- Español llts EGD instrucciones de preparación (51 KB)
- Español llts EGD and Colonoscopy instrucciones de preparación AM procedimiento (238 KB)
- Español llts Colonoscopy Instrucciones de preparación 2 Preparación del día (64 KB)
- Español llts EGD and Colonoscopy instrucciones de preparación AM procedimiento 2 (71 KB)
- Español llts EGD instrucciones de preparación (219 KB)