DR. MARK R GUNDERSEN (MD) – Family Medicine Physician, NPI 1952390106
Family Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
3,076 FAMILY PRACTICE in MN
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Provider Addresses for DR. MARK R GUNDERSEN (MD)
Ryans Road, Worthington, Nobles County, Minnesota, 56187, United States
WORTHINGTON, MN 561871722
Phone: (507) 372-2921
Fax: (507) 372-6523
Type: Mailing
Lake Region Healthcare, 712, South Cascade Street, Downtown, Fergus Falls, Otter Tail County, Minnesota, 56537, United States
FERGUS FALLS, MN 565372813
Phone: (218) 736-8000
Fax: (218) 739-6742
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2008-10-07
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20081007000057 | I | Family Practice | MN | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 36415 | Insertion of needle into vein for collection of blood sample | 405 | 231 | $0 |
| 85610 | Blood test, clotting time | 267 | 37 | $0 |
| 80053 | Blood test, comprehensive group of blood chemicals | 182 | 163 | $0 |
| 80061 | Blood test, lipids (cholesterol and triglycerides) | 141 | 136 | $0 |
| 85025 | Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 104 | 85 | $0 |
Insurance plans in this area (ZIP 56187)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | SD | |
| Internal Medicine, Hospitalist | SD | |
| - | MN | |
| Physical Therapist In Private Practice | SD | |
| - | SD | |
| Nurse Practitioner | SD | |
| Hospice/Palliative Care | SD | |
| - | SD | |
| Vascular Surgery, General Surgery | SD | |
| Physician Assistant | SD |
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