Dr. Mark Leo Johnson, MD

Dr. Johnson practices at Vandalia Health Mon Medical Center in Morgantown, West Virginia, part of Vandalia Health.

Dr. Johnson's NPI, 1649353855, was assigned on October 23, 2006. Dr. Johnson graduated from University of Minnesota Medical School in 1992. Dr. Johnson holds West Virginia license 18363.

Dr. Johnson's primary practice is Vandalia Health Mon Medical Center, at 1200 Jd Anderson Drive, Morgantown, WV 26505 in Monongalia County. The practice phone is (304) 598-1200.

Dr. Johnson's primary practice is Vandalia Health Mon Medical Center in Morgantown, West Virginia, part of Vandalia Health. Dr. Johnson is also affiliated with Vandalia Health Mon Preston Memorial Hospital. The medical group on file is Mon Health Medical Center. Dmand AI also links Dr. Johnson to 1 more dialysis center 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.

Surgery is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Johnson is licensed in West Virginia.

CMS data shows 595 Medicare services from Dr. Johnson across 12 procedure codes in 2024, for 293 Medicare patients. Medicare paid $35,200 for them.

CMS counts 293 Medicare patients who saw Dr. Johnson in 2024. The largest group is 65 to 74, with 131 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 11% are also on Medicaid. Their average risk score is 1.63, 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 74, with 53% women.

In 2024, Dr. Johnson wrote 213 Medicare Part D claims for 107 patients. 92% of them were for generic drugs. CMS names the drug for 106 of them, across 3 drugs with 11 or more claims each, at $1,339 in total drug cost. In 2023, CMS named 128 claims across 4 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 91 out of 100 for Dr. Johnson for performance year 2024, reported through an alternative payment model (APM). Dr. Johnson accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 66 procedures of colonoscopy by Dr. Johnson, more than 70% of the clinicians it reports for that procedure.

Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)

Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)

Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)

CMS Open Payments shows 71 general payments to Dr. Johnson from 22 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 41% of the total. Intuitive Surgical, Inc. paid the most, $2,747.

Dr. Johnson graduated from University of Minnesota Medical School in 1992.