MJ
Mark Johnston, MD
Gastroenterologist
4140 Oregon Pike, Ephrata, PA 17522
Are you Mark Johnston, MD?
At a glance
Accepts 6 insurances
Aetna, Anthem Blue Cross Blue Shield, Blue Cross Blue Shield of Illinois, Cigna, UnitedHealthcare, more+ ·
Has 20+ years of experience
Graduated from Hahnemann University School Of Medicine
Offers telehealth visits
Video appointments available via Telehealth
Office locations
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1.
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2.
Lancaster General Hospital
2106 Harrisburg Pike, Lancaster, PA, 17601
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3.
Lancaster General Hospital
555 N Duke St, Lancaster, PA, 17602
Mark Johnston does not participate in Zocdoc to offer online booking at this time
In-network insurances
Aetna
BlueCross BlueShield
Cigna
UnitedHealthcare
Aetna
BlueCross BlueShield
Cigna
UnitedHealthcare
Areas of expertise
This doctor's experience enhances their expertise in similar cases. Below are the conditions or surgeries they treat most frequently.
Acid reflux
Colonoscopy
Acute gastrointestinal bleeding
Upper GI endoscopy
Acid reflux
Colonoscopy
Acute gastrointestinal bleeding
Upper GI endoscopy
More about Mark Johnston, MD
Mark Johnston, MD is a Gastroenterologist in Ephrata, PA and Lancaster, PA. They completed their residency at Nat'L Naval Medical Center. They attended medical school at Hahnemann University School Of Medicine in 1985. Mark Johnston was board certified by American Board of Gastroenterology Certification in Gastroenterology. Their offices are located in 4140 Oregon Pike, Ephrata, PA, 2106 Harrisburg Pike, Lancaster, PA and 555 N Duke St, Lancaster, PA.
Education & experience
Education
Nat'L Naval Medical Center, Residency
Hahnemann University School Of Medicine, Medical School, 1985
Certifications
American Board of Gastroenterology Certification in Gastroenterology
License
PA State Medical License active through December 2024 #MD425522
VA State Medical License active through December 2024 #0101041593
Background
Gender
Female
NPI number
#1003898131