Mark W. Johnson, MD
Clinical Pathology/Laboratory Medicine Physician · Sioux Falls, SD
Mark W. Johnson, MD is a clinical pathology/laboratory medicine physician with a practice address in Sioux Falls, South Dakota, and NPI 1558347765, issued on Dec 20, 2005. Check the license (South Dakota 3451, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- Mark W. Johnson
- Credential
- MD
- Primary taxonomy
- Clinical Pathology/Laboratory Medicine Physician 207ZP0105X
- License number
- 3451 SD
Self-reported in NPPES; status is on the state search - Practice location
- 1305 W 18TH St, Sioux Falls, SD 57105
- Phone
- (605) 333-1720
- Enumerated
- Dec 20, 2005
- Record last updated
- Jan 26, 2022
- Fax
- (605) 333-1966
- Entity
- Type 1 · individual
8 nearest clinical pathology/laboratory medicine physician records → All 12 in South Dakota → Look up another NPI →
Also registered at 1305 W 18TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Joseph Alex, MDEmergency Medicine Physician1407484819
Verify Mark W. Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Dakota Board of Medical and Osteopathic Examiners
Search for license 3451Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 78 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Mark W. Johnson among 12 clinical pathology/laboratory medicine physician records in South Dakota
Mark W. Johnson, MD is one of 12 clinical pathology/laboratory medicine physician records with a practice address in South Dakota. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 75% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 67% of these records are
- Record last updated2022 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0105X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Clinical Pathology/Laboratory Medicine Physician providers in South Dakota
There are 12 clinical pathology/laboratory medicine physician records in South Dakota.
All 12 in South Dakota → Every provider in Sioux Falls → Clinical Pathology/Laboratory Medicine Physician nationwide →
The 8 clinical pathology/laboratory medicine physician records with the nearest ZIP codes
- Keith Anderson, MDSioux Falls, SD 571051942286612
- Ryan Askeland, M.D.Sioux Falls, SD 571051205046265
- Kimberlee Bohy, MDSioux Falls, SD 571051518934777
- Michael Geis, M.D.Sioux Falls, SD 571051962510164
- Kayla Hoerschgen, MDSioux Falls, SD 571051134680614
- Ali Jassim, MDSioux Falls, SD 571051265418248
- Douglas Lynch, M.D.Sioux Falls, SD 571051174767842
- Desirae Muirhead, M.D.Sioux Falls, SD 571051740490333
Common questions
What is Mark W. Johnson, MD's NPI number?
Mark W. Johnson, MD's National Provider Identifier (NPI) is 1558347765, issued on Dec 20, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark W. Johnson, MD located?
The NPPES record lists a practice address at 1305 W 18TH St, Sioux Falls, SD, 57105. Phone: (605) 333-1720. Providers update this record themselves, so call before visiting.
How can I verify Mark W. Johnson, MD's license?
NPPES lists South Dakota license number 3451, as entered by the provider. Search the South Dakota Board of Medical and Osteopathic Examiners at https://www.sdbmoe.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Mark W. Johnson, MD's MIPS final score?
The 2023 MIPS final score is 78 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.