background
background
Dr. Mark Johnston, MD

Dr. Mark Johnston, MD

Gastroenterology*
35+ years of experience

Dr. Mark Johnston, MD is a gastroenterologist in Lancaster, PA and has over 35 years of experience in the medical field. Dr. Johnston has extensive experience in Pancreatic Disease, Esophageal Disorders, and Liver Disease. He graduated from Hahnemann University in 1985. He is affiliated with Lancaster General Hospital. He is accepting new patients and telehealth appointments.

4.7 Star Rating
Based on 15 reviews 4.7 Star Rating (15 reviews)

Practice

2112 Harrisburg Pike Ste 202 Lancaster, PA 17601
Telehealth available

Make an Appointment

Compare Dr. Mark Johnston, MD with other Gastroenterologists near you

Dr. Johnston is a Healthgrades Choice provider in Gastroenterology

The Healthgrades Choice designation helps you understand the most important factors to consider when choosing a healthcare professional. This designation is earned based on four set standards.
Read our methodology

  • Above average experience
  • Good hospital quality
  • Good patient ratings
  • No healthcare sanctions

Experience Check

Search for experience in a specific area

Dr. Johnston's Reviews

Likelihood to recommend Dr. Johnston

4.7

15 ratings, 9 with a written review
5 Star
93%
93%
4 Star
0%
0%
3 Star
0%
0%
2 Star
0%
0%
1 Star
7%
7%

Your trust is our top concern. Learn more.

We monitor all reviews to ensure they comply with our guidelines and don’t include personal information, profanity, libel, defamation, harassment, obscenity or fraud.

All reviews are confirmed and audited before publication, and community members have the ability to flag inappropriate content for further review by our team.

Doctors can not pay for good reviews, nor can they pay to have negative reviews removed.

Any reviews that are deemed fraudulent or violate our guidelines will be removed immediately.

RecentHighestLowestMost Helpful
What went well
  • I felt respected
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
  • Difficult to schedule appointment
Helpful
Aug 20, 2024
×Post a ResponseAre you Dr. Mark Johnston, MD?
What went well
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Trusted the provider's decisions
What could be improved
  • Difficult to schedule appointment
Helpful
Dec 21, 2021
×Post a ResponseAre you Dr. Mark Johnston, MD?
What went well
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
  • Difficult to schedule appointment
Helpful
Russell Adsitt – Feb 16, 2021
×Post a ResponseAre you Dr. Mark Johnston, MD?
What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
1 person found this helpful
Helpful
Robert Russell – Nov 19, 2020
×Post a ResponseAre you Dr. Mark Johnston, MD?
What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
2 people found this helpful
Helpful
T J SAVOYE – Oct 24, 2020
×Post a ResponseAre you Dr. Mark Johnston, MD?
What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
1 person found this helpful
Helpful
James C Armstrong – Oct 19, 2019
×Post a ResponseAre you Dr. Mark Johnston, MD?
What went well
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
2 people found this helpful
Helpful
Oct 09, 2019
×Post a ResponseAre you Dr. Mark Johnston, MD?
What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
3 people found this helpful
Helpful
Myerstown, PA – Aug 28, 2017
×Post a ResponseAre you Dr. Mark Johnston, MD?
What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
6 people found this helpful
Helpful
Lancaster, PA – Aug 10, 2017
×Post a ResponseAre you Dr. Mark Johnston, MD?

Leave a review

How was your experience with Dr. Johnston?

About Me

biography

Dr. Mark Johnston, MD is a gastroenterologist in Lancaster, PA and has over 35 years of experience in the medical field. Dr. Johnston has extensive experience in Pancreatic Disease, Esophageal Disorders, and Liver Disease. He graduated from Hahnemann...read more
  • Gastroenterology

  • Internal Medicine

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • National Naval Medical Center-bethesda

    Fellowship Hospital, 1997
  • Portsmouth Naval Hospital

    Internship Hospital, 1986
  • Hahnemann University

    Medical School, 1985
  • Pennsylvania State University

    Undergraduate School, 1980
American Board of Medical Specialties®
American Board of Internal Medicine®
Gastroenterology
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.

Dr. Johnston is a Healthgrades Choice provider in Gastroenterology

    Read our methodology

    Insurance Check

    Search for your insurance carrier and choose your plan type

    Locations

    Practice

    Unavail2112 Harrisburg Pike Ste 202 Lancaster, PA 17601
    1

    Practice

    Office2124 Harrisburg Pike Ste 214 Lancaster, PA 17601
    2
    Professional Anesthesia Associates2112 Harrisburg Pike Lancaster, PA 17601
    3

    Practice

    4

    Affiliated Hospitals

    • Lancaster General Hospital

      555 N Duke St
      Lancaster, PA 17602
      Recipient of 42
      hospital awards

      America's 100 Best Hospitals Award™ (2025, 2024, 2023)

      Top 1% in the nation for providing the highest clinical quality year over year

      America's 250 Best Hospitals Award™ (2025, 2024, 2023)

      Top 1% in the nation for providing the highest clinical quality year over year

      View all awards

      How patients felt about the care they received at this hospital.

      88%
      Patients said they were given information about recovering at home

      4% higher than the national average

      82%
      Patients said that nurses always listened to them and explained things well

      7% higher than the national average

      View all patient feedback
    Learn more about how Healthgrades measures Hospital Quality