Dr. Mark Johnston, MD

Dr. Mark Johnston, MD

Gastroenterology  |  
Male  |  
Age 60
(7)
Insurances AcceptedSave
Dr. Mark Johnston, MD is a gastroenterology doctor who practices in Lancaster, PA. He is 60 years old and has been practicing for 21 years.

2112 Harrisburg Pike Ste 202

Lancaster, PA 17601

Contact Information

(717) 869-4600

Insurance Accepted

  • Aetna
  • Amerihealth
  • Blue Cross Blue Shield
  • Capital Blue Cross
  • Cigna
  • Commercial Insurance Company
  • CoreSource
  • Coventry Health Care
  • First Health (Coventry Health Care)
  • 13 More

*Please verify this information when scheduling an appointment.

Learn about Dr. Johnston

Be confident in your decisions by checking out your provider's top areas of care, education, patient reviews and more. Learn about finding the right doctor for you

Top Care Areas

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See how frequently Dr. Johnston performs your care needs compared to other doctors.

Stomach Diseases
very high
more than 99% of peers
Gastrointestinal Diseases
very high
more than 99% of peers
Diaphragmatic and-or Hiatal Hernia
very high
more than 98% of peers

Dr. Johnston's percentages are based on the rate of treatment compared to peers nationwide from insurance data. Learn more info about our data and this Top Care Areas component.

We're trying something new with Top Care Areas.Was it helpful for you?YesNo

1

Specialties

  • Gastroenterology
2

Board Certifications

  • Gastroenterology
    Accredited by: American Board of Internal Medicine*
  • Internal Medicine
    Accredited by: American Board of Internal Medicine*
84

Conditions Treated

  • Abdominal Disorders
  • Abdominal Pain
  • Anal Prolapse
  • Anal or Rectal Pain
  • Anemia
  • Autoimmune Diseases
  • Barrett's Esophagus
  • Benign Neoplasm of the Digestive System
  • Benign Tumor
  • Biliary Atresia
  • Blood Disorders
  • Cancer
  • Celiac Disease
  • Cholecystitis and Gallstones
  • Cholelithiasis
  • Cirrhosis
  • Colorectal Cancer
  • Constipation
  • Crohn's Disease
  • Dehydration
  • Diaphragmatic and-or Hiatal Hernia
  • Diarrhea
  • Diverticulitis, Intestinal
  • Diverticulosis, Intestinal
  • Duodenal Ulcer
  • Duodenitis
  • Dysentery
  • Dysphagia
  • Enteritis
  • Esophageal Achalasia and Cardiospasm
  • Esophageal Cancer
  • Esophageal Diseases
  • Esophageal Diverticulum
  • Esophageal Ulcer
  • Esophageal Varices
  • Esophagitis
  • Food Poisoning
  • Gas-Bloat Syndrome
  • Gastric Ulcer
  • Gastritis
  • Gastroesophageal Reflux Disease (GERD)
  • Gastrointestinal Bleeding
  • Gastrointestinal Diseases
  • Gastrointestinal Malabsorption
  • Gastroparesis
  • Heartburn
  • Hemochromatosis
  • Hemorrhoids
  • Hepatitis A
  • Hepatitis B - Immune Response
  • Hepatitis C
  • Hernia
  • Ileus
  • Indigestion
  • Inflammatory Bowel Disease
  • Intestinal Abscess
  • Intestinal Ischemia
  • Intestinal Obstruction
  • Irritable Bowel Syndrome
  • Lactose Intolerance
  • Liver Damage from Alcohol
  • Malnutrition
  • Mesenteric Panniculitis
  • Nausea
  • Neoplasm of Gastrointestinal Tract
  • Non-Alcoholic Fatty Liver Disease
  • Non-Neonatal Jaundice
  • Noninfectious Gastroenteritis and Colitis
  • Pancreatitis
  • Peptic Ulcer
  • Pyloric Stenosis
  • Reflux Esophagitis
  • Small Intestine Cancer
  • Stomach Cancer
  • Stomach Diseases
  • Stomach and Small Intestine Cancer
  • Stomal Ulcer
  • Ulcer
  • Ulcerative Colitis
  • Unexplained Weight Loss
  • Viral Enteritis
  • Viral Hepatitis
  • Viral Infection
  • Vomiting Disorders

More

Read More
18

Procedures

  • Bile Duct Procedure
  • Capsule Endoscopy
  • Colon Cancer Screening
  • Colonoscopy
  • Colonoscopy With Polypectomy
  • Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
  • Colorectal Cancer Screening
  • Cryoablation
  • Cryosurgery
  • ERCP (Endoscopic Retrograde Cholangiopancreatography)
  • Endoscopic Mucosal Resection
  • Endoscopy (Esophagus, Stomach, Small Intestine)
  • Fecal Impaction Removal
  • Gastroenterology Procedures
  • Hemorrhoidectomy or Excision of Anal Tags
  • Liver Biopsy
  • Manometry
  • Radiofrequency Ablation for Barrett's Esophagus

Background Check

Malpractice Claims not available

Healthgrades does not collect malpractice information for Pennsylvania.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.

Education

  • Pennsylvania State University
    Undergraduate School | Graduated 1980
  • Hahnemann University
    Medical School | Graduated 1985
  • Portsmouth Naval Hospital
    Internship Hospital | Completed 1986
  • Portsmouth Naval Hospital
    Residency Hospital | Completed 1990
  • National Naval Medical Center-Bethesda
    Fellowship Hospital | Completed 1997

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Johnston has no media or publications listed.

Languages Spoken

  • English

Memberships & Professional Affiliations

Dr. Johnston does not have any memberships or affiliations listed. If you are Dr. Johnston and would like to add memberships or affiliations, please update your profile.

Dr. Johnston's Reviews

Likelihood of recommending Dr. Johnston to family and friends
4.4
based on 7 total reviews (2 with comments)

Likelihood to Recommend (7)

  • 5
    (6)
  • 4
    (0)
  • 3
    (0)
  • 2
    (0)
  • 1
    (1)

Dr. Johnston's Performance

Trustworthiness
EXCELLENT
Explains condition(s) well
EXCELLENT
Answers Questions
EXCELLENT
Time well spent
EXCELLENT

Office & Staff Performance

Scheduling
VERY GOOD
Office environment
EXCELLENT
Staff friendliness
EXCELLENT
Average wait time
10 to 15 minutes

Patient Comments (2)

Myerstown, PA |
Dr. Johnston is an excellent doctor; he takes time to listen and I feel that he sees me as more than another patient. When I leave his office I feel as though I've been heard and that he will provide the best care to me that is available to him. He's a busy man, and very intelligent with an...more
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Lancaster, PA |
I recently saw Dr. Johnston for the first time for a condition that has been plaguing me for years. He's the first doctor to listen to me and understand that my symptoms are real and the test results prove it. These results have been sitting in my file for four years and no other doctor bothered to...more
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Visit Dr. Johnston

Now Accepting New Patients
Dr. Johnston accepts 22 insurance carriers
  • Aetna
    Aetna HMO
    Choice Plus POS II
    Select
  • Amerihealth
    Personal Choice PPO
  • Blue Cross Blue Shield
    Blue Card PPO
  • Capital Blue Cross
  • Cigna
    Cigna HMO
    Cigna PPO
    Great West Healthcare-Cigna PPO
    Open Access Plus
  • Commercial Insurance Company
  • CoreSource
  • Coventry Health Care
    Coventry Health America PPO
  • First Health (Coventry Health Care)
    First Health (Coventry Health Care) PPO
  • Gateway Health Plan
  • Geisinger Health Plan
  • Highmark Blue Cross Blue Shield
    Community Blue PPO
  • Humana
    Choice Care PPO
  • Keystone Health Plan East
    Keystone Health Plan East HMO
  • Medicaid
  • MultiPlan
    MultiPlan PPO
    PHCS Network PPO
  • Principal Life
  • Tricare
  • UnitedHealthCare
    Choice Plus POS
    Navigate HMO
    Navigate POS
    Options PPO
    United Healthcare
  • Universal American
  • UPMC
    UPMC PPO
  • UPMC Health Plan

*Please verify this information when scheduling an appointment.

Hospitals where Dr. Johnston has admitting privileges

Lancaster General Hospital
555 N Duke St
Lancaster, PA 17602
View Hospital Profile
Lancaster Regional Medical Center
250 College Ave
Lancaster, PA 17603
View Hospital Profile

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