Matthew J. Shellenberger
Experienced in Gallstones

Dr. Matthew J. Shellenberger

Gastroenterology
Geisinger Health System
Geisinger Medical Center - Gastroenterology
100 North Academy Avenue, 
Danville, PA 
Accepting New Patients
Offers Telehealth

Experienced in Gallstones
Geisinger Health System
Geisinger Medical Center - Gastroenterology
100 North Academy Avenue, 
Danville, PA 
OverviewInsuranceLocationsClinical ResearchSimilar Doctors

Overview

Dr. Shellenberger is a board-certified and fellowship-trained gastroenterologist. His clinical interests include postgraduate medical education, esophageal motility and other GI laboratory procedures. Dr. Shellenberger earned his medical degree from the Philadelphia College of Osteopathic Medicine. He completed his residency and his fellowship in gastroenterology at Geisinger Medical Center. Dr. Shellenberger is certified by the American Board of Internal Medicine in internal medicine and gastroenterology.

Dr. Shellenberger is rated as an Experienced provider by MediFind in the treatment of Gallstones. His top areas of expertise are Crohn's Disease, Angiodysplasia of the Colon, Swallowing Difficulty, Endoscopy, and Colonoscopy.

His clinical research consists of co-authoring 11 peer reviewed articles. MediFind looks at clinical research from the past 15 years.

Graduate Institution
Philadelphia College Of Osteopathic Medicine, 2003 - Doctor Of Osteopathic Medicine
Residency
Geisinger Medical Center, 2006
Specialties
Gastroenterology
Licenses
Internal Medicine in PA
Board Certifications
The American Board Of Internal Medicine In Internal Medicine And Gastroenterology
Fellowships
Geisinger Medical Center, 2010
Hospital Affiliations
Geisinger Medical Center
Languages Spoken
English
Gender
Male

Insurance

Accepted insurance can change. Please verify directly with the provider.

Find your insurance
Find your insuranceClose

Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Anthem
  • EPO
  • HMO
  • POS
  • PPO
Blue Cross Blue Shield
  • EPO
  • HMO
  • POS
  • PPO
Capital Blue Cross
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • OTHER MEDICARE PART D
  • PPO
Cigna
  • EPO
  • HMO
  • PPO
Geisinger
  • HMO
  • POS
  • PPO
Highmark
  • EPO
  • HMO
  • PPO
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Independent Health
  • EPO
  • POS
  • PPO
Managed Medicaid
  • OTHER MANAGED MEDICAID
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
Moda Health
  • EPO
  • PPO
PA Health and Wellness
  • HMO
  • MANAGED MEDICAID PLAN
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
UPMC
  • EPO
  • PPO
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
View 11 Less Insurance Carriers -

Locations

Geisinger Medical Center - Gastroenterology
100 North Academy Avenue, Danville, PA 17822
Call: 800-275-6401
Other Locations
Geisinger Montoursville - Endoscopy
10 Choate Circle, Montoursville, PA 17754
Call: 800-230-4565
Geisinger Healthplex Center Point - Surgery
1201 Oak Street, Pittston, PA 18640
Call: 800-275-6401

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.


11 Total Publications

Increasing the Density of Laboratory Measures for Machine Learning Applications.
Increasing the Density of Laboratory Measures for Machine Learning Applications.
Journal: Journal of clinical medicine
Published: November 25, 2020
View All 11 Publications
Similar Doctors
Hiral N. Shah
Distinguished in Gallstones
Dr. Hiral N. Shah
Gastroenterology
Distinguished in Gallstones
Dr. Hiral N. Shah
Gastroenterology

Eastern Pennsylvania Endoscopy Center

1501 N Cedar Crest Blvd, Suite 100, 
Allentown, PA 
 (83.7 miles away)
610-289-2172
Languages Spoken:
English, Gujarati , Hindi
See accepted insurances

Hiral Shah is a Gastroenterologist in Allentown, Pennsylvania. Dr. Shah is rated as a Distinguished provider by MediFind in the treatment of Gallstones. His top areas of expertise are Choledocholithiasis, Bile Duct Obstruction, Barrett Esophagus, Endoscopy, and Pancreatectomy.

David L. Diehl
Distinguished in Gallstones
Dr. David L. Diehl
Gastroenterology
Distinguished in Gallstones
Dr. David L. Diehl
Gastroenterology

Geisinger Medical Center - Gastroenterology

100 North Academy Avenue, 
Danville, PA 
 (24.5 miles away)
800-275-6401
Languages Spoken:
English
See accepted insurances

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 rated as a Distinguished provider by MediFind in the treatment of Gallstones. His top areas of expertise are Barrett Esophagus, Gallbladder Disease, Watermelon Stomach, Endoscopy, and Gallbladder Removal.

Shashin Shah
Distinguished in Gallstones
Dr. Shashin Shah
Gastroenterology
Distinguished in Gallstones
Dr. Shashin Shah
Gastroenterology

Eastern Pennsylvania Endoscopy Center

1501 N Cedar Crest Blvd, Suite 100, 
Allentown, PA 
 (83.7 miles away)
610-289-2172
Languages Spoken:
English, Gujarati 
See accepted insurances

Philosophy of care | My philosophy is to treat you as I would a member of my own family, offering guidance in your time of need. I strive to provide state-of-the-art care for each patient during every encounter. I will do my best to make sure you understand your condition so you can continue to take strides toward optimum health. | Why I entered medicine | It hurts my soul when people don’t feel good. Since childhood I’ve been passionate about wanting to help people feel better. Growing up I saw the relationship my father had with his own doctor, and that inspired me. | Community involvement | I have volunteered in Mother Teresa’s mission in Calcutta, India. I also have organized and managed a team of 30-plus staffers for Lustgarten Foundation pancreatic cancer fundraiser walks in Allentown the last 12 years. | Personal interests | In my spare time I enjoy biking with family, tennis and meditation. Dr. Shah is rated as a Distinguished provider by MediFind in the treatment of Gallstones. His top areas of expertise are Pancreatic Cancer, Pancreatic Pseudocyst, Bile Duct Obstruction, Endoscopy, and Liver Transplant.

VIEW MORE GALLSTONES DOCTORS

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

Find Dr. Shellenberger's expertise for a condition
ConditionClose
    • Distinguished
    • Crohn's Disease
      Dr. Shellenberger is
      Distinguished
      . Learn about Crohn's Disease.
      See more Crohn's Disease experts
    • Advanced
    • Angiodysplasia of the Colon
      Dr. Shellenberger is
      Advanced
      . Learn about Angiodysplasia of the Colon.
      See more Angiodysplasia of the Colon experts
    • Colitis
      Dr. Shellenberger is
      Advanced
      . Learn about Colitis.
      See more Colitis experts
    • Endoscopy
      Dr. Shellenberger is
      Advanced
      . Learn about Endoscopy.
      See more Endoscopy experts
    • Esophagitis
      Dr. Shellenberger is
      Advanced
      . Learn about Esophagitis.
      See more Esophagitis experts
    • Familial Adenomatous Polyposis
      Dr. Shellenberger is
      Advanced
      . Learn about Familial Adenomatous Polyposis.
      See more Familial Adenomatous Polyposis experts
    • Gas Bloat Syndrome
      Dr. Shellenberger is
      Advanced
      . Learn about Gas Bloat Syndrome.
      See more Gas Bloat Syndrome experts
    View All 9 Advanced Conditions
    • Experienced
    • Achalasia
      Dr. Shellenberger is
      Experienced
      . Learn about Achalasia.
      See more Achalasia experts
    • Alcoholic Cirrhosis
      Dr. Shellenberger is
      Experienced
      . Learn about Alcoholic Cirrhosis.
      See more Alcoholic Cirrhosis experts
    • Anal Fissure
      Dr. Shellenberger is
      Experienced
      . Learn about Anal Fissure.
      See more Anal Fissure experts
    • Bacterial Gastroenteritis
      Dr. Shellenberger is
      Experienced
      . Learn about Bacterial Gastroenteritis.
      See more Bacterial Gastroenteritis experts
    • Banti's Syndrome
      Dr. Shellenberger is
      Experienced
      . Learn about Banti's Syndrome.
      See more Banti's Syndrome experts
    • Barrett Esophagus
      Dr. Shellenberger is
      Experienced
      . Learn about Barrett Esophagus.
      See more Barrett Esophagus experts
    View All 57 Experienced Conditions
    Want to save this doctor for later?
    Sign Up
    Is this your doctor?
    Find A Second Opinion
    Not sure about your diagnosis?
    Check Your Symptoms
     
     
     
     
    Learn about our expert tiers
    Learn More
    Are you the provider on this profile?
    Claim Profile
    For Patients
    • Our Story
    • How MediFind Works
    • Conditions A-Z
    • Doctor Directory
    • Symptoms Directory
    • Procedures Directory
    • Treatment Directory
    • Drug Directory
    • Infusion Center Finder
    • FAQ
    • Contact Us
    For Providers and Practices
    • Claim Your Profile
    • Newsroom
    Business Solutions
    • Provider
    • Network Solutions
    Additional Resources
    • Consumer Health Data Privacy Policy
    • Privacy Policy
    • Terms of Use
    • Advertising Policy
    • Content Policy
    Subscribe to our newsletter

    Sign up to stay informed about MediFind and get wellness sent your way.

    Close

      By subscribing, I agree to MediFind's Terms of Use, Privacy Policy and Consumer Health Data Privacy Policy, as applicable.

      Bullet PinMediFind
      Follow us on
      This information is not intended as a substitute for informed medical advice. You should work with a licensed professional to diagnose and treat health conditions. We let the data speak for itself, MediFind does not endorse any healthcare providers.
      © 2026 All Rights Reserved

      Request an Appointment

      If you are experiencing a medical emergency, call 9-1-1.

      MediFind will contact the provider for your appointment request. You’ll receive status updates by email. Your provider or MediFind will reach out to you directly by phone or email to schedule your appointment or request additional information.

      Patient Details

      This information is for the patient who will be seen at the appointment.

        Close

        Returning patient? Use your address on file with the provider.

        Insurance Details

        Please provide information of the primary insurance holder as the practice may require this information to schedule.

        Insurance Provider *
        Insurance ProviderClose

        Appointments Details

        Let’s get more information about your appointment.

                0 / 1000
                0 / 1000
                By pressing the Submit button you are agreeing to MediFind’s Terms of Use, Privacy Policy and Consumer Health Data Privacy Policy, as applicable.