Physician Profile
Unclaimed ProfileAbout JOHNSON
Mark W Johnson, MD practises anatomic & clinical pathology in Sioux Falls, SD. Mark is also listed as specialising in pathology — clinical.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Areas of Expertise
Common questions
What is Dr. Johnson's specialty?
Dr. Johnson is an anatomic & clinical pathology in Sioux Falls, SD. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “Anatomic & Clinical Pathology”.
NPI registry
Where can I find Dr. Johnson?
Dr. Johnson is listed at 1305 W 18TH ST, Sioux Falls, SD 57105. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Johnson?
The number on file is (605) 333-1720. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Johnson?
Dr. Johnson's National Provider Identifier is 1558347765. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
How much experience does Dr. Johnson have?
Dr. Johnson has 21+ years experience. Registered with an NPI since 2005. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practised for longer than this.
NPI registry
What is Dr. Johnson known for?
According to Medicare billing data, Dr. Johnson the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Johnson's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Johnson. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (605) 333-1720
- Email not available
Practice Locations
1305 W 18TH ST
Sioux Falls, SD 57105
Procedures Most Often Billed to Medicare
351 services · 225 patients · 8 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Pathology examination of tissue using a microscope, intermediate complexity | Lab test | 88305 |
200 |
| Special stained specimen slides to examine tissue, initial procedure | Lab test | 88342 |
35 |
| Blood smear interpretation by physician with written report | Lab test | 85060 |
31 |
| Pathology examination of tissue using a microscope, moderately high complexity | Lab test | 88307 |
23 |
| Special stained specimen slides to examine tissue including interpretation and report | Lab test | 88313 |
19 |
| Preparation of tissue for examination by removing any calcium present | Lab test | 88311 |
16 |
| Pathology cytologic examination of specimen during surgery, initial site | Lab test | 88333 |
14 |
| Bone marrow, smear interpretation | Lab test | 85097 |
13 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other anatomic & clinical pathology specialists at this location 1
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other anatomic & clinical pathology specialists in Sioux Falls 7
Same specialty, same city.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.