Dr. Mark A. Johnson, MD
- Medicare services, 2016
- 1,010
- Part D claims, 2017
- 562
- Industry payments
- $2,099
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 747 Broadway, Seattle, WA 98122
- Practice phone
- Call (206) 386-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Swedish Medical Center -First Hill
Seattle, Washington
Find Dr. Johnson's 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 A. Johnson is an internist in Seattle, Washington
Dr. Johnson practices at Swedish Medical Center -First Hill in Seattle, Washington.
Dr. Johnson's NPI, 1740246362, was assigned on April 22, 2006. Dr. Johnson holds Washington license MD00016683.
- NPI
- 1740246362NPI Registry (opens in a new tab)
- NPI enumeration date
- April 22, 2006
- NPI status
- Active
- Practice phone
- (206) 386-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Mark A. Johnson practices at Swedish Medical Center -First Hill in Seattle, Washington
Dr. Johnson's primary practice is Swedish Medical Center -First Hill, at 747 Broadway, Seattle, WA 98122 in King County. The practice phone is (206) 386-6000.
- Swedish Medical Center -First Hill747 Broadway, Seattle, WA 98122 · King CountyPhone(206) 386-6000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark A. Johnson is affiliated with 2 sites of care and 1 medical group
Dr. Johnson's primary practice is Swedish Medical Center -First Hill in Seattle, Washington. Dmand AI also links Dr. Johnson to 1 group practice or clinic and 1 medical group, 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 A. Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnson practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Swedish Medical Center -First Hill | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark A. Johnson is one of 2,689 internists in Washington
Internal medicine is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Johnson is licensed in Washington.
Specialties and state licenses
- Internal medicine, WashingtonPrimary
Internists near Dr. Johnson
Counts of internists 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 A. Johnson billed Medicare for 1,010 services in 2016
CMS data shows 1,010 Medicare services from Dr. Johnson across 9 procedure codes in 2016. Medicare paid $58,649 for them. Every service was in an office.
Dr. Johnson's Medicare services by type, 2016
- Office and hospital visits721
- Tests and treatments132
- Other services104
- Imaging53
Dr. Johnson compared with the Washington median for internists, 2016
- Dr. Johnson
- Washington median
- Medicare services
- 1,010vs 3642.8 times
- Part D claims
- 562vs 1823.1 times
Medians across 2,604 internists in Washington with Dmand AI profiles that report each measure.
Dr. Johnson's most billed Medicare procedure codes, 2016
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 internists in Washington.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark A. Johnson's patients have a median age of 76
Across all payers, Dmand AI patient panel data puts Dr. Johnson's median patient age at 76, with 47% women.
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 76
Patient panel by sex, all payers
- Women47%
- Men53%
Source: Dmand AI Patient Panel Data
Dr. Mark A. Johnson wrote 562 Medicare Part D claims in 2017
In 2017, Dr. Johnson wrote 562 Medicare Part D claims. They cover 24 drugs, with $8,955 in total drug cost. In 2016, CMS named 6,118 claims across 127 drugs.
Dr. Johnson's most prescribed drugs by claims, 2017
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2016 to 2017
- 2016
- 2017
- Claims for drugs CMS names
- 2016: 6,1182017: 56291%
Drugs named by CMS: 24 in 2017, 127 in 2016.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Mark A. Johnson received $2,099 in industry payments from 2016 to 2023
CMS Open Payments shows 7 general payments to Dr. Johnson from 2 drug and device companies from 2016 to 2023. Travel and lodging make up the largest share, 74% of the total. Novo Nordisk Inc paid the most, $2,080.
General payments to Dr. Johnson by program year, 2016 to 2023
General payments to Dr. Johnson by kind, 2016 to 2023
- Travel and lodging$1,55374%
- Food and beverage$54626%
Companies that paid Dr. Johnson the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Mark A. 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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 A. 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 A. Johnson's NPI number?
Dr. Mark A. Johnson's NPI number is 1740246362. It was assigned on April 22, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark A. Johnson?
Dr. Mark A. Johnson is an internist in Seattle, Washington. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mark A. Johnson practice?
Dr. Johnson practices at 747 Broadway, Seattle, WA 98122. Dr. Johnson's primary practice is Swedish Medical Center -First Hill in Seattle, Washington. Dmand AI also links Dr. Johnson to 1 group practice or clinic and 1 medical group.
What is Dr. Mark A. Johnson's office phone number?
The practice phone on file for Dr. Johnson is (206) 386-6000.
What is Dr. Mark A. Johnson's medical license number?
Dr. Johnson holds Washington license MD00016683.
Does Dr. Mark A. Johnson accept Medicare?
Yes. CMS data shows Dr. Johnson billed Medicare for 1,010 services in 2016.
What services does Dr. Mark A. Johnson bill to Medicare?
In 2016, Dr. Johnson's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and medicare service (G0009).
What drugs does Dr. Mark A. Johnson prescribe most?
In 2017 Medicare Part D data, Dr. Johnson's most prescribed drugs by claims were Levothyroxine Sodium, Amlodipine Besylate and Omeprazole.
Has Dr. Mark A. Johnson received payments from drug or device companies?
CMS Open Payments shows $2,099 in general payments to Dr. Johnson from 2 companies from 2016 to 2023. The largest total came from Novo Nordisk Inc.
How long has Dr. Mark A. Johnson been practicing?
Dr. Johnson's NPI was assigned in 2006.
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