Christopher D. Still
Distinguished in Short Bowel Syndrome

Dr. Christopher D. Still

Gastroenterology
Geisinger Health System
Geisinger Medical Center - GI Nutrition
100 North Academy Avenue, 
Danville, PA 
Offers Telehealth

Distinguished in Short Bowel Syndrome
Geisinger Health System
Geisinger Medical Center - GI Nutrition
100 North Academy Avenue, 
Danville, PA 
OverviewInsuranceLocationsClinical ResearchSimilar Doctors

Overview

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 rated as a Distinguished provider by MediFind in the treatment of Short Bowel Syndrome. His top areas of expertise are Obesity, Malnutrition, Small Bowel Bacterial Overgrowth, Gastric Bypass, and Vagotomy.

His clinical research consists of co-authoring 148 peer reviewed articles and participating in 4 clinical trials. MediFind looks at clinical research from the past 15 years.

Graduate Institution
Philadelphia College Of Osteopathic Medicine, 1991 - Doctor Of Osteopathic Medicine
Residency
Geisinger Medical Center, 1995
Specialties
Gastroenterology
Licenses
Internal Medicine in PA
Board Certifications
The American Board Of Internal Medicine
Fellowships
Geisinger Medical Center, 1996
Hospital Affiliations
Geisinger Medical Center
Geisinger-Lewistown Hospital
Languages Spoken
English
Gender
Male

Insurance

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

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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Anthem
  • EPO
  • HMO
  • POS
  • PPO
Blue Cross Blue Shield
  • EPO
  • HMO
  • POS
  • PPO
Blue Shield of California
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE-MEDICAID PLAN
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Capital Blue Cross
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • OTHER MEDICARE PART D
  • PPO
CareFirst
  • HMO
  • POS
  • PPO
Cigna
  • EPO
  • HMO
  • PPO
Gateway Health Plan
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE SNP
  • OTHER MEDICARE PART D
Geisinger
  • HMO
  • POS
  • PPO
Health Partners Plans
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE SNP
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 15 Less Insurance Carriers -

Locations

Geisinger Medical Center - GI Nutrition
100 North Academy Avenue, Danville, PA 17822
Call: 800-275-6401
Other Locations
Geisinger Healthplex State College - Gastroenterology
132 Abigail Lane, Port Matilda, PA 16870
Call: 800-230-4565
Geisinger Medical Center Muncy - Gastroenterology
255 Route 220 Highway, Muncy, PA 17756
Call: 800-230-4565

Additional Areas of Focus

Dr. Still has provided the following conditions as areas of focus. Please note that we may not have enough data to validate their experience in some of these conditions.

Non-Alcoholic Fatty Liver Disease
Nonalcoholic Steatohepatitis (NASH)

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

A 2-Stage (Open-Label Followed by Randomized Double-Blind, Placebo-Controlled Stage), Phase 2 Trial of Setmelanotide in Patients With Specific Gene Variants in the Melanocortin-4 Receptor Pathway
A 2-Stage (Open-Label Followed by Randomized Double-Blind, Placebo-Controlled Stage), Phase 2 Trial of Setmelanotide in Patients With Specific Gene Variants in the Melanocortin-4 Receptor Pathway
Enrollment Status: Completed
Publish Date: July 02, 2025
Intervention Type: Drug
Study Drug: Setmelanotide
Study Phase: Phase 2
Long Term Extension Trial of Setmelanotide (RM-493) for Patients Who Have Completed a Trial of Setmelanotide for the Treatment of Obesity Associated With Genetic Defects Upstream of the MC4 Receptor in the Leptin-melanocortin Pathway
Long Term Extension Trial of Setmelanotide (RM-493) for Patients Who Have Completed a Trial of Setmelanotide for the Treatment of Obesity Associated With Genetic Defects Upstream of the MC4 Receptor in the Leptin-melanocortin Pathway
Enrollment Status: Completed
Publish Date: May 31, 2025
Intervention Type: Drug
Study Drug: Setmelanotide
Study Phase: Phase 2/Phase 3
A Randomized, Double-Blind, Placebo-Controlled Phase 2 Study Comparing the Efficacy and Safety of Tirzepatide Versus Placebo in Patients With Nonalcoholic Steatohepatitis (NASH)
A Randomized, Double-Blind, Placebo-Controlled Phase 2 Study Comparing the Efficacy and Safety of Tirzepatide Versus Placebo in Patients With Nonalcoholic Steatohepatitis (NASH)
Enrollment Status: Completed
Publish Date: January 24, 2025
Intervention Type: Drug
Study Drug: Tirzepatide
Study Phase: Phase 2
Setmelanotide (RM-493) Phase 2 Treatment Trial in Patients With Rare Genetic Disorders of Obesity
Setmelanotide (RM-493) Phase 2 Treatment Trial in Patients With Rare Genetic Disorders of Obesity
Enrollment Status: Completed
Publish Date: August 18, 2023
Intervention Type: Drug
Study Drug: Setmelanotide
Study Phase: Phase 2
View 3 Less Clinical Trials

148 Total Publications

Serum Metabolomic Changes Following Bariatric Surgery Adjusted for Measured Glomerular Filtration Rate Suggest Mechanisms of Kidney Protection.
Serum Metabolomic Changes Following Bariatric Surgery Adjusted for Measured Glomerular Filtration Rate Suggest Mechanisms of Kidney Protection.
Journal: medRxiv : the preprint server for health sciences
Published: June 10, 2025
View All 148 Publications
Similar Doctors
Advanced in Short Bowel Syndrome
Dr. Susan S. Rasul
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Advanced in Short Bowel Syndrome
Dr. Susan S. Rasul
Gastroenterology

Geisinger Medical Center - GI Nutrition

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

Susan Rasul is a primary care provider, practicing in Gastroenterologist in Danville, Pennsylvania. Dr. Rasul is rated as an Experienced provider by MediFind in the treatment of Short Bowel Syndrome. Her top areas of expertise are Malnutrition, Small Bowel Bacterial Overgrowth, Short Bowel Syndrome, and Obesity.

Darshan Suthar
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Advanced in Short Bowel Syndrome
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Internal Medicine | Gastroenterology

Geisinger Montoursville - Endoscopy

10 Choate Circle, 
Montoursville, PA 
 (24.5 miles away)
800-230-4565
Languages Spoken:
English, Gujarati , Hindi, Spanish
See accepted insurances

Darshan Suthar is an Internal Medicine specialist and a Gastroenterologist in Montoursville, Pennsylvania. Dr. Suthar is rated as an Advanced provider by MediFind in the treatment of Short Bowel Syndrome. His top areas of expertise are Malnutrition, Small Bowel Bacterial Overgrowth, Short Bowel Syndrome, Hemorrhoidectomy, and Endoscopy.

Christine S. Hanna
Experienced in Short Bowel Syndrome
Dr. Christine S. Hanna
Gastroenterology
Experienced in Short Bowel Syndrome
Dr. Christine S. Hanna
Gastroenterology

Geisinger Medical Center - GI Nutrition

100 North Academy Avenue, 
Danville, PA 
 (0.1 miles away)
800-275-6401
Experience:
10+ years
Languages Spoken:
English, Korean
See accepted insurances
Offers Telehealth

Christine Hanna is a primary care provider, practicing in Gastroenterologist in Danville, Pennsylvania. Dr. Hanna has been practicing medicine for over 10 years and is rated as an Experienced provider by MediFind in the treatment of Short Bowel Syndrome. Her top areas of expertise are Malnutrition, Obesity, Short Bowel Syndrome, and Small Bowel Bacterial Overgrowth.

VIEW MORE SHORT BOWEL SYNDROME 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. Still's expertise for a condition
ConditionClose
  • Elite
  • Gastric Bypass
    Dr. Still is
    Elite
    . Learn about Gastric Bypass.
    See more Gastric Bypass experts
  • Obesity
    Dr. Still is
    Elite
    . Learn about Obesity.
    See more Obesity experts
  • Distinguished
  • Malnutrition
    Dr. Still is
    Distinguished
    . Learn about Malnutrition.
    See more Malnutrition experts
  • Non-Alcoholic Fatty Liver Disease
    Dr. Still is
    Distinguished
    . Learn about Non-Alcoholic Fatty Liver Disease.
    See more Non-Alcoholic Fatty Liver Disease experts
  • Short Bowel Syndrome
    Dr. Still is
    Distinguished
    . Learn about Short Bowel Syndrome.
    See more Short Bowel Syndrome experts
  • Small Bowel Bacterial Overgrowth
    Dr. Still is
    Distinguished
    . Learn about Small Bowel Bacterial Overgrowth.
    See more Small Bowel Bacterial Overgrowth experts
  • Advanced
  • Nonalcoholic Steatohepatitis (NASH)
    Dr. Still is
    Advanced
    . Learn about Nonalcoholic Steatohepatitis (NASH).
    See more Nonalcoholic Steatohepatitis (NASH) experts
  • Protein Deficiency
    Dr. Still is
    Advanced
    . Learn about Protein Deficiency.
    See more Protein Deficiency experts
  • Experienced
  • Acute Pancreatitis
    Dr. Still is
    Experienced
    . Learn about Acute Pancreatitis.
    See more Acute Pancreatitis experts
  • Anemia
    Dr. Still is
    Experienced
    . Learn about Anemia.
    See more Anemia experts
  • Bile Acid Malabsorption
    Dr. Still is
    Experienced
    . Learn about Bile Acid Malabsorption.
    See more Bile Acid Malabsorption experts
  • Campylobacter Infection
    Dr. Still is
    Experienced
    . Learn about Campylobacter Infection.
    See more Campylobacter Infection experts
  • Celiac Disease
    Dr. Still is
    Experienced
    . Learn about Celiac Disease.
    See more Celiac Disease experts
  • Childhood Pancreatitis
    Dr. Still is
    Experienced
    . Learn about Childhood Pancreatitis.
    See more Childhood Pancreatitis experts
View All 23 Experienced Conditions
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