Dr. Mark Stephen Johnson, MD
- Medicare services, 2024
- 39
- Medicare patients, 2024
- 42
- Hospital affiliations
- 3
- Industry payments
- $569
- Medical groups
- 3
- Practice address
- 600 Gresham Dr, Norfolk, VA 23507
- Practice phone
- Call (757) 388-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Johnson's professional email, personal email and mobile number
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Dr. Mark Stephen Johnson is a general surgeon in Norfolk, Virginia
Dr. Johnson practices at Sentara Norfolk General Hospital in Norfolk, Virginia, part of Sentara Health.
Dr. Johnson's NPI, 1235142357, was assigned on August 14, 2006. Dr. Johnson graduated from University of Massachusetts Medical School in 2006. Dr. Johnson holds Virginia license 0101248712.
- NPI
- 1235142357NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1658672456
- NPI enumeration date
- August 14, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (757) 388-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark Stephen Johnson practices at Sentara Norfolk General Hospital in Norfolk, Virginia
Dr. Johnson's primary practice is Sentara Norfolk General Hospital, at 600 Gresham Dr, Norfolk, VA 23507 in Norfolk City. The practice phone is (757) 388-3000.
- Sentara Norfolk General Hospital600 Gresham Dr, Norfolk, VA 23507 · Norfolk CityPhone(757) 388-3000
Source: Dmand AI Affiliation Data
Dr. Mark Stephen Johnson is affiliated with 4 sites of care and 3 medical groups
Dr. Johnson's primary practice is Sentara Norfolk General Hospital in Norfolk, Virginia, part of Sentara Health. Dr. Johnson is also affiliated with Hospital for Extended Recovery. The medical group on file is Sentara Medical Group. Dmand AI also links Dr. Johnson to 1 more hospital, 2 medical groups and 1 hospital outpatient department, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark Stephen Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnson practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sentara Norfolk General Hospital | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Sentara Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Mark Stephen Johnson is one of 739 general surgeons in Virginia
Surgery is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dmand AI has Dr. Johnson's licenses on file in 2 states: Virginia and North Carolina.
Specialties and state licenses
- Surgery, VirginiaPrimary
- North Carolina license
General surgeons near Dr. Johnson
Counts of general surgeons 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 Stephen Johnson billed Medicare for 39 services in 2024
CMS data shows 39 Medicare services from Dr. Johnson across 2 procedure codes in 2024, for 42 Medicare patients. Medicare paid $1,652 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Johnson's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 692024: 3943%
Dr. Johnson compared with the Virginia median for general surgeons, 2024
- Dr. Johnson
- Virginia median
- Medicare services
- 39vs 19079% below
- Medicare patients
- 42vs 14471% below
Medians across 667 general surgeons in Virginia with Dmand AI profiles that report each measure.
Dr. Johnson's 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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Johnson and other general surgeons in Virginia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Stephen Johnson treated 42 Medicare patients in 2024, average age 77
CMS counts 42 Medicare patients who saw Dr. Johnson in 2024. The largest group is 75 to 84, with 18 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.34, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Johnson's median patient age at 57, with 17% women.
Dr. Johnson's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Johnson's Medicare patients by sex, 2024
- Women2048%
- Men2252%
Chronic conditions among Dr. Johnson's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Diabetes40%
- Ischemic heart disease38%
- Heart failure33%
- Anxiety29%
- Chronic kidney disease29%
Share of Medicare patients with each condition. A patient can have several.
Dr. Johnson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women17%
- Men83%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Mark Stephen Johnson takes part in Medicare
Dr. Johnson accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Mark Stephen Johnson received $569 in industry payments from 2019 to 2024
CMS Open Payments shows 7 general payments to Dr. Johnson from 4 drug and device companies from 2019 to 2024. Travel and lodging make up the largest share, 57% of the total. Intuitive Surgical, Inc. paid the most, $334.
General payments to Dr. Johnson by program year, 2019 to 2024
General payments to Dr. Johnson by kind, 2019 to 2024
- Travel and lodging$32457%
- Food and beverage$24543%
Companies that paid Dr. Johnson the most, 2019 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark Stephen Johnson graduated from University of Massachusetts Medical School
Dr. Johnson graduated from University of Massachusetts Medical School in 2006.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark Stephen Johnson's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Mark Stephen Johnson
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Mark Stephen Johnson's NPI number?
Dr. Mark Stephen Johnson's NPI number is 1235142357. It was assigned on August 14, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Stephen Johnson?
Dr. Mark Stephen Johnson is a general surgeon in Norfolk, Virginia. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Mark Stephen Johnson practice?
Dr. Johnson practices at 600 Gresham Dr, Norfolk, VA 23507. Dr. Johnson's primary practice is Sentara Norfolk General Hospital in Norfolk, Virginia, part of Sentara Health. Dmand AI also links Dr. Johnson to 1 hospital, 2 medical groups and 1 hospital outpatient department.
What is Dr. Mark Stephen Johnson's office phone number?
The practice phone on file for Dr. Johnson is (757) 388-3000.
What is Dr. Mark Stephen Johnson's medical license number?
Dr. Johnson holds Virginia license 0101248712, one of the licenses on file in 2 states.
Which states has Dr. Mark Stephen Johnson been licensed in?
Dmand AI has state licenses on file for Dr. Johnson in Virginia and North Carolina.
Which hospitals is Dr. Mark Stephen Johnson affiliated with?
Dr. Johnson practices at Sentara Norfolk General Hospital in Norfolk, Virginia. Dr. Johnson is also affiliated with Hospital for Extended Recovery. Dmand AI links Dr. Johnson to 1 more hospital.
What medical group is Dr. Mark Stephen Johnson part of?
Dr. Johnson is linked to Sentara Medical Group. Dmand AI links Dr. Johnson to 2 more medical groups.
Does Dr. Mark Stephen Johnson accept Medicare?
Yes. CMS data shows Dr. Johnson billed Medicare for 39 services in 2024, and Dr. Johnson accepts Medicare assignment.
How many Medicare patients does Dr. Mark Stephen Johnson see?
CMS counts 42 Medicare patients who saw Dr. Johnson in 2024, with an average age of 77.
Show 4 more questionsShow fewer questions
What services does Dr. Mark Stephen Johnson bill to Medicare?
In 2024, Dr. Johnson's most billed Medicare services were hospital inpatient care (99231) and hospital inpatient care (99221).
Where did Dr. Mark Stephen Johnson go to medical school?
Dr. Johnson graduated from University of Massachusetts Medical School in 2006.
Has Dr. Mark Stephen Johnson received payments from drug or device companies?
CMS Open Payments shows $569 in general payments to Dr. Johnson from 4 companies from 2019 to 2024. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Mark Stephen Johnson been practicing?
Dr. Johnson graduated from medical school in 2006, 20 years ago.
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