JOHN FREDERICK STOCK (M.D.) – Internal Medicine Physician, NPI 1932207545
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
3,636 INTERNAL MEDICINE in MN
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Provider Addresses for JOHN FREDERICK STOCK (M.D.)
Lake Region Healthcare, 712, South Cascade Street, Downtown, Fergus Falls, Otter Tail County, Minnesota, 56537, United States
FERGUS FALLS, MN 565372913
Phone: (218) 736-8000
Type: Mailing
24, 7th Street, Dunlap, Morris County, Kansas, 66846, United States
MORRIS, MN 562671312
Phone: (320) 589-4008
Fax: (320) 589-4227
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 12 Open Payments records for all available years, with a total value of $212.
Total Amount is formed as General ($212) + Research ($0) + Ownership ($0) = $212.
Last reported payment date: 2024-05-29 • Largest payer in this snapshot: Abbott Laboratories ($72).
Total Amount
$212
General + Research + Ownership
Payments
12
Total payment records
General Amount
$212
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-05-29
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Abbott Laboratories | $72 |
| Amgen Inc. | $45 |
| Medtronic, Inc. | $35 |
| Merck Sharp & Dohme LLC | $15 |
| Mylan Specialty L.P. | $15 |
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: 2005-02-07
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 |
|---|---|---|---|---|
| I20050207000312 | I | Internal Medicine | 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 |
|---|---|---|---|---|
| 93018 | Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician | 14 | 14 | $0 |
Insurance plans in this area (ZIP 56537)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice, Osteopathic Manipulative Medicine | MN | |
| Family Practice | MN | |
| Family Practice | MN | |
| Emergency Medicine | NY | |
| General Surgery | MN | |
| Nurse Practitioner | MN | |
| Nurse Practitioner | MN | |
| Nurse Practitioner | MN | |
| Certified Nurse Midwife (Cnm) | MN | |
| Nurse Practitioner | MN |
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