Dr. Mark E. Johns, MD
- Medicare services, 2024
- 11,996
- Medicare patients, 2024
- 2,291
- Part D claims, 2024
- 14,372
- MIPS score, 2024
- 76
- Hospital affiliations
- 5
- Practice address
- 13572 Waterford Pl, Midlothian, VA 23112
- Practice phone
- Call (804) 560-8785
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Cardiology of Virginia, Inc.
Midlothian, Virginia
Find Dr. Johns' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Mark E. Johns is a cardiologist in Midlothian, Virginia
Dr. Johns practices at Cardiology of Virginia, Inc. in Midlothian, Virginia.
Dr. Johns' NPI, 1558350579, was assigned on October 21, 2005. Dr. Johns holds Virginia license 0101042544.
- NPI
- 1558350579NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4789611799
- NPI enumeration date
- October 21, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (804) 560-8785
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark E. Johns practices at Cardiology of Virginia, Inc. in Midlothian, Virginia
Dr. Johns' primary practice is Cardiology of Virginia, Inc., at 13572 Waterford Pl, Midlothian, VA 23112 in Chesterfield County. The practice phone is (804) 560-8785.
- Cardiology of Virginia, Inc.13572 Waterford Pl, Midlothian, VA 23112 · Chesterfield CountyPhone(804) 560-8785
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark E. Johns is affiliated with 7 sites of care and 3 medical groups
Dr. Johns' primary practice is Cardiology of Virginia, Inc. in Midlothian, Virginia. Dr. Johns is also affiliated with Bon Secours St. Francis Medical Center. The medical group on file is Cardiology of Virginia. Dmand AI also links Dr. Johns to 4 more hospitals, 2 medical groups and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mark E. Johns' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johns practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cardiology of Virginia, Inc. | Available with a free account |
| +6 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark E. Johns is one of 562 cardiologists in Virginia
Cardiovascular disease is Dr. Johns' primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Johns is licensed in Virginia.
Specialties and state licenses
- Cardiovascular disease, VirginiaPrimary
Cardiologists near Dr. Johns
Counts of cardiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Mark E. Johns billed Medicare for 11,996 services in 2024
CMS data shows 11,996 Medicare services from Dr. Johns across 33 procedure codes in 2024, for 2,291 Medicare patients. Medicare paid $611,021 for them.
Dr. Johns' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 8,8192024: 7,20218%
- Office and hospital visits
- 2023: 4,3772024: 4,1236%
- Drugs given in the office
- 2023: 5102024: 30241%
- Other services
- 2023: 1732024: 24642%
- Imaging
- 2023: 1272024: 1233%
Where Dr. Johns' Medicare services took place, 2024
- In an office11,74298%
- In a facility2542%
Dr. Johns compared with the Virginia median for cardiologists, 2024
- Dr. Johns
- Virginia median
- Medicare services
- 11,996vs 2,2525.3 times
- Medicare patients
- 2,291vs 1,17894% above
- Part D claims
- 14,072vs 1,4729.6 times
Medians across 562 cardiologists in Virginia with Dmand AI profiles that report each measure.
Dr. Johns' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark E. Johns treated 2,291 Medicare patients in 2024, average age 76
CMS counts 2,291 Medicare patients who saw Dr. Johns in 2024. The largest group is 65 to 74, with 977 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 2% are also on Medicaid. Their average risk score is 1.18, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Johns' median patient age at 72, with 53% women.
Dr. Johns' Medicare patients by age, 2024
Dr. Johns' Medicare patients by sex, 2024
- Women1,20453%
- Men1,08747%
Chronic conditions among Dr. Johns' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis48%
- Ischemic heart disease48%
- Diabetes33%
- Atrial fibrillation32%
- Anxiety25%
- Chronic kidney disease24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Johns' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women53%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark E. Johns wrote 14,372 Medicare Part D claims in 2024
In 2024, Dr. Johns wrote 14,372 Medicare Part D claims for 1,855 patients. 84% of them were for generic drugs. CMS names the drug for 14,072 of them, across 68 drugs with 11 or more claims each, at $2,479,393 in total drug cost. In 2023, CMS named 12,065 claims across 70 drugs.
Dr. Johns' Part D claims by kind of drug, 2024
- Generic12,076 claims84%
- Brand-name2,296 claims16%
Dr. Johns' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Johns' Part D claims, 2024
- Antibiotics0%42 of 14,372 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 12,0652024: 14,07217%
Drugs named by CMS: 68 in 2024, 70 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Mark E. Johns scored 76 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 76 out of 100 for Dr. Johns for performance year 2024, reported as part of a group. Dr. Johns accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Johns as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Johns' MIPS scores, performance year 2024
- 76of 100Final score
- 66.4of 100Quality
- 40of 100Improvement Activities
- 64of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Mark E. Johns received $2,194 in industry payments from 2016 to 2025
CMS Open Payments shows 97 general payments to Dr. Johns from 25 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $318.
General payments to Dr. Johns by program year, 2016 to 2025
Companies that paid Dr. Johns the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Mark E. Johns's profile data
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Mark E. Johns
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What is Dr. Mark E. Johns' NPI number?
Dr. Mark E. Johns' NPI number is 1558350579. It was assigned on October 21, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark E. Johns?
Dr. Mark E. Johns is a cardiologist in Midlothian, Virginia. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. Mark E. Johns practice?
Dr. Johns practices at 13572 Waterford Pl, Midlothian, VA 23112. Dr. Johns' primary practice is Cardiology of Virginia, Inc. in Midlothian, Virginia. Dmand AI also links Dr. Johns to 4 hospitals, 2 medical groups and 1 group practice or clinic.
What is Dr. Mark E. Johns' office phone number?
The practice phone on file for Dr. Johns is (804) 560-8785.
What is Dr. Mark E. Johns' medical license number?
Dr. Johns holds Virginia license 0101042544.
Which hospitals is Dr. Mark E. Johns affiliated with?
Dr. Johns is affiliated with Bon Secours St. Francis Medical Center. Dmand AI links Dr. Johns to 4 more hospitals.
What medical group is Dr. Mark E. Johns part of?
Dr. Johns is linked to Cardiology of Virginia. Dmand AI links Dr. Johns to 2 more medical groups.
Does Dr. Mark E. Johns accept Medicare?
Yes. CMS data shows Dr. Johns billed Medicare for 11,996 services in 2024, and Dr. Johns accepts Medicare assignment.
Does Dr. Mark E. Johns offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Johns as offering telehealth services.
What is Dr. Mark E. Johns' MIPS score?
Dr. Johns' MIPS final score for performance year 2024 is 76 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Mark E. Johns see?
CMS counts 2,291 Medicare patients who saw Dr. Johns in 2024, with an average age of 76.
What services does Dr. Mark E. Johns bill to Medicare?
In 2024, Dr. Johns' most billed Medicare services were heart test or procedure (93000), heart test or procedure (93793) and office visit, established patient (99214).
What drugs does Dr. Mark E. Johns prescribe most?
In 2024 Medicare Part D data, Dr. Johns' most prescribed drugs by claims were Losartan Potassium, Amlodipine Besylate and Eliquis.
Has Dr. Mark E. Johns received payments from drug or device companies?
CMS Open Payments shows $2,194 in general payments to Dr. Johns from 25 companies from 2016 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Mark E. Johns been practicing?
Dr. Johns graduated from medical school in 1987, 39 years ago.
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