Physician Profile
Unclaimed ProfileAbout JOHNSTON
Mark R Johnston, DPM practices podiatry in Willmar, MN. According to Medicare claims data, Mark cared for 889 Medicare patients across 1,442 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (320) 231-5000
- Email not available
Practice Locations
101 WILLMAR AVE SW
Willmar, MN 56201
Procedures Most Often Billed to Medicare
1,442 services · 889 patients · 15 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Removal of fingernails or toenails, 6 or more nails | Procedure | 11721 |
341 |
| Removal of fingernails or toenails, 1-5 nails | Procedure | 11720 |
88 |
| Removal of noncancer thickened skin growth, 2-4 growths | Procedure | 11056 |
43 |
| Trimming of fingernails or toenails | Procedure | 11719 |
39 |
| Removal of noncancer thickened skin growth, 1 growth | Procedure | 11055 |
37 |
| Aspiration and/or injection of fluid from small joint | Procedure | 20600 |
16 |
| X-ray of foot, minimum of 3 views | Imaging | 73630 |
48 |
| Removal of tissue from wound, 20.0 sq cm or less | Treatment | 97597 |
22 |
| Injection, triamcinolone acetonide, not otherwise specified, 10 mg | Drug given | J3301 |
50 |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
314 |
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.
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 podiatry specialists in Willmar 2
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1980 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of fingernails or toenails, 6 or more nails 8
Providers in MN who bill this service to Medicare most often.
Common questions
What is Dr. Johnston's specialty?
Dr. Johnston is a podiatry in Willmar, MN. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “PODIATRY”.
NPI registry
Where can I find Dr. Johnston?
Dr. Johnston is listed at 101 WILLMAR AVE SW, Willmar, MN 56201. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Johnston?
The number on file is (320) 231-5000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Johnston's NPI number?
Dr. Johnston's National Provider Identifier is 1912973058. 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
What is Dr. Johnston's medical education?
Dr. Johnston attended Other, graduating in 1980. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Johnston been practicing?
Dr. Johnston has 46 years experience. Calculated from a graduation year of 1980, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Johnston known for?
According to Medicare billing data, Dr. Johnston performs procedures including removal of fingernails or toenails, 6 or more nails, removal of fingernails or toenails, 1-5 nails and removal of noncancer thickened skin growth, 2-4 growths; reads or performs imaging such as x-ray of foot, minimum of 3 views; provides treatments such as removal of tissue from wound, 20.0 sq cm or less, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Johnston confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Johnston. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.