Dr. Mark Yarwood Johnson, MD

Dr. Johnson practices at Scripps Mercy Hospital San Diego in San Diego, California, part of Scripps Health.

Dr. Johnson's NPI, 1861421372, was assigned on June 30, 2006. Dr. Johnson graduated from George Washington University School of Medicine and Health Sciences in 1973. Dr. Johnson holds California license G28163.

Dr. Johnson's primary practice is Scripps Mercy Hospital San Diego, at 4077 5th Ave, San Diego, CA 92103 in San Diego County. The practice phone is (619) 294-8111.

Dr. Johnson's primary practice is Scripps Mercy Hospital San Diego in San Diego, California, part of Scripps Health. The medical group on file is Scripps Clinic Medical Group. Dmand AI also links Dr. Johnson to 2 more group practices and clinics and 1 medical group, each named with a free account. Dr. Johnson's employer is on file too: a hospital.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnson practices, 3 sites in all. Vendor and product names are available with a free account.

Gastroenterology is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Johnson is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. Johnson's licenses on file in 3 states: California, Florida and Washington.

Dmand AI lists acid reflux, acute gastroduodenitis, cirrhosis of the liver, colonoscopy, esophagus, stomach, or upper small intestine surgery, fatty liver, gastrointestinal bleeding and hemorrhoids among the conditions Dr. Johnson treats.

CMS data shows 324 Medicare services from Dr. Johnson across 5 procedure codes in 2024, for 103 Medicare patients. Medicare paid $33,022 for them.

CMS counts 103 Medicare patients who saw Dr. Johnson in 2024. The largest group is 65 to 74, with 50 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 56% are also on Medicaid. Their average risk score is 2.51, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Johnson's median patient age at 69, with 75% women.

In 2024, Dr. Johnson wrote 193 Medicare Part D claims for 80 patients. 91% of them were for generic drugs. CMS names the drug for 125 of them, across 5 drugs with 11 or more claims each, at $2,849 in total drug cost. In 2023, CMS named 602 claims across 13 drugs.

CMS Open Payments shows 113 general payments to Dr. Johnson from 29 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 74% of the total. Boston Scientific Corporation paid the most, $1,649.

Dr. Johnson graduated from George Washington University School of Medicine and Health Sciences in 1973.

Dr. Johnson is in network with 3 carriers, including Humana, Molina and NV State Medicaid. HMO plans come from the most carriers, 1. Check the plan with the practice before a visit.