
Overview
Dr. Diehl is a board-certified and fellowship-trained gastroenterologist. His clinical interests include endoscopic ultrasound, endoscopic retrograde cholangiopancreatography (ERCP) and innovative advanced therapeutic endoscopy. Dr. Diehl obtained his medical degree from the University of California, Los Angeles. He completed his residency at Harbor-UCLA Medical Center and his fellowships in gastroenterology at the University of California, San Francisco Medical Center and the University of California, Los Angeles Medical Center. Dr. Diehl is certified by the American Board of Internal Medicine. In his free time, Dr. Diehl enjoys spending time with his family and exercising, particularly swimming. He also has an appreciation for old cars.
Dr. Diehl is highly rated in 27 conditions, according to our data. His top areas of expertise are Barrett Esophagus, Gallbladder Disease, Watermelon Stomach, Endoscopy, and Gallbladder Removal.
His clinical research consists of co-authoring 151 peer reviewed articles and participating in 4 clinical trials. MediFind looks at clinical research from the past 15 years.
Graduate Institution
Residency
Specialties
Licenses
Board Certifications
Fellowships
Hospital Affiliations
Languages Spoken
Gender
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- OTHER MEDICARE PART D
- PPO
- EPO
- HMO
- PPO
- HMO
- POS
- PPO
- EPO
- HMO
- PPO
- HMO
- INDEMNITY
- POS
- PPO
- EPO
- POS
- PPO
- OTHER MEDICAID
- STATE MEDICAID
- EPO
- PPO
- HMO
- MANAGED MEDICAID PLAN
- EPO
- HMO
- POS
- PPO
- EPO
- PPO
- EPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE
- OTHER MEDICARE PART D
Locations
100 North Academy Avenue, Danville, PA 17822
Clinical Research
Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.
4 Clinical Trials
Geisinger Medical Center - GI Nutrition
Dr. Still is a board-certified and fellowship-trained specialist in nutrition and weight management. His clinical and research interests include malnutrition and comprehensive weight management. Dr. Still obtained his medical degree from the Philadelphia College of Osteopathic Medicine. He completed his residency and a fellowship in clinical nutrition at Geisinger Medical Center. Dr. Still is certified by the American Board of Internal Medicine.|Are weight loss medications right for you? Learn more from Dr. Still. Dr. Still is highly rated in 8 conditions, according to our data. His top areas of expertise are Obesity, Malnutrition, Small Bowel Bacterial Overgrowth, Gastric Bypass, and Vagotomy.
GMC Gastroenterology/Nutrition
Dr. Confer is a board-certified and fellowship-trained gastroenterologist. His clinical interests include endoscopic ultrasound and endoscopic retrograde cholangiopancreatography (ERCP). Dr. Confer attended the Lake Erie College of Osteopathic Medicine, where he received his medical degree. He completed his residency, a fellowship in gastroenterology and hepatology, and a fellowship in advanced therapeutic endoscopy at the Cleveland Clinic Foundation. Dr. Confer is certified by the American Board of Internal Medicine in gastroenterology. Dr. Confer is highly rated in 15 conditions, according to our data. His top areas of expertise are Gallbladder Disease, Benign Esophageal Stricture, Cholecystitis, Endoscopy, and Gallbladder Removal.
Geisinger Medical Center - Gastroenterology
Harshit S. Khara, MD, is an Interventional Gastroenterologist based at Geisinger Medical Center in Danville, PA.|Dr. Khara is an Associate Professor of Medicine at the Geisinger Commonwealth School of Medicine. He serves as the Director of Endoscopy; System Director of Interventional Endoscopy, Director of Endoscopic and Translational Research; Director of the Clinical Use Evaluation Committee; and System Director of Quality & Innovation. He is also the Research Director and Core faculty for the Gastroenterology Fellowship Program, as well as the Program Director for the Advanced Therapeutic Endoscopy Fellowship Program at the Center for Advanced Therapeutic Endoscopy at Geisinger, participating in the training and mentoring of advanced endoscopy and general gastroenterology fellows. Dr. Khara is also the Director of the National Pancreas Foundation Center at Geisinger.|He is involved in multi-center clinical research and quality improvement projects. Dr. Khara's clinical and research interests are in the field of interventional endoscopic ultrasound, ERCP, Barrett’s esophagus, third space endoscopy, endoscopic treatments for GERD, interventional EndoHepatology, and bariatric interventional endoscopy.|Dr. Khara earned his medical degree from Seth G.S. Medical College & K.E.M. Hospital in India then completed his Internal Medicine Residency at Drexel University College of Medicine-Saint Peter's University Hospital. He completed a Fellowship in Transplant Hepatology at the University of Nebraska Medical Center, a Fellowship in Gastroenterology at Yale University School of Medicine-Norwalk Hospital and a Fellowship in Advanced Therapeutic Endoscopy at Geisinger Medical Center.|Dr. Khara is certified in Gastroenterology by the American Board of Internal Medicine. Dr. Khara is highly rated in 27 conditions, according to our data. His top areas of expertise are Pancreatic Pseudocyst, Gastroesophageal Reflux Disease (GERD), Barrett Esophagus, Endoscopy, and Gastric Bypass.
Frequently Asked Questions about Dr. David L. Diehl
How do I make an appointment with Dr. David L. Diehl?
You can book an appointment with Dr. David L. Diehl by calling their office at 800-275-6401. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.
Is Dr. David L. Diehl a top-rated expert for Endoscopy?
MediFind is an objective health platform that identifies experts based on real-world data. Dr. David L. Diehl is classified as an Elite expert for Endoscopy, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.
What conditions does Dr. David L. Diehl specialize in?
While Dr. David L. Diehl is a Gastroenterology, they have specific expertise in Endoscopy, Barrett Esophagus, and Gallbladder Disease. MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Gastroenterology.
Does Dr. David L. Diehl participate in research or clinical trials?
Yes. Dr. David L. Diehl has published 151 articles and abstracts on conditions like Endoscopy. You can view a list of Dr. David L. Diehl's latest peer-reviewed publications and clinical trial participation on their profile to see if they are active in new treatments.
Does Dr. David L. Diehl accept my insurance?
Dr. David L. Diehl accepts most major insurance plans, including Aetna and Blue Cross Blue Shield. We recommend calling the office directly at 800-275-6401 to verify that your specific plan is currently accepted before your visit.
Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Elite
- Barrett EsophagusDr. Diehl isElite. Learn about Barrett Esophagus.
- EndoscopyDr. Diehl isElite. Learn about Endoscopy.
- Distinguished
- AchalasiaDr. Diehl isDistinguished. Learn about Achalasia.
- Angiodysplasia of the ColonDr. Diehl isDistinguished. Learn about Angiodysplasia of the Colon.
- CholecystitisDr. Diehl isDistinguished. Learn about Cholecystitis.
- Esophageal VaricesDr. Diehl isDistinguished. Learn about Esophageal Varices.
- Gallbladder DiseaseDr. Diehl isDistinguished. Learn about Gallbladder Disease.
- GallstonesDr. Diehl isDistinguished. Learn about Gallstones.
- Advanced
- Acute PancreatitisDr. Diehl isAdvanced. Learn about Acute Pancreatitis.
- Benign Esophageal StrictureDr. Diehl isAdvanced. Learn about Benign Esophageal Stricture.
- Bile Duct ObstructionDr. Diehl isAdvanced. Learn about Bile Duct Obstruction.
- Childhood PancreatitisDr. Diehl isAdvanced. Learn about Childhood Pancreatitis.
- CholedocholithiasisDr. Diehl isAdvanced. Learn about Choledocholithiasis.
- CholestasisDr. Diehl isAdvanced. Learn about Cholestasis.
- Experienced
- Accessory PancreasDr. Diehl isExperienced. Learn about Accessory Pancreas.
- Alcoholic CirrhosisDr. Diehl isExperienced. Learn about Alcoholic Cirrhosis.
- AscitesDr. Diehl isExperienced. Learn about Ascites.
- Bile Duct StrictureDr. Diehl isExperienced. Learn about Bile Duct Stricture.
- Biliary DyskinesiaDr. Diehl isExperienced. Learn about Biliary Dyskinesia.
- Childhood VolvulusDr. Diehl isExperienced. Learn about Childhood Volvulus.


