DR. JOHN GARY ARMSTRONG (M.D.) – Surgery Physician, NPI 1487948824
Surgery Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
377 GENERAL SURGERY in IA
Provider Addresses for DR. JOHN GARY ARMSTRONG (M.D.)
210 EAST 5TH ST
STORM LAKE, IA 50588
Phone: (712) 213-4750
Fax: (712) 213-5230
Type: Location
1525 W 5TH ST
STORM LAKE, IA 50588
Phone: (712) 213-4750
Fax: (712) 213-5230
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $71.
Total Amount is formed as General ($71) + Research ($0) + Ownership ($0) = $71.
Last reported payment date: 2024-07-12 • Largest payer in this snapshot: Stryker Corporation ($71).
Total Amount
$71
General + Research + Ownership
Payments
1
Total payment records
General Amount
$71
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-07-12
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Stryker Corporation | $71 |
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: 2017-08-24
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 |
|---|---|---|---|---|
| I20170824003359 | I | General Surgery | IA | 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 |
|---|---|---|---|---|
| 45380 | Biopsy of large bowel using a flexible endoscope | 51 | 51 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 49 | 49 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 37 | 37 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 24 | 23 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 22 | 21 | $0 |
Insurance plans in this area (ZIP 50588)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Certified Registered Nurse Anesthetist (Crna) | IA | |
| Nurse Practitioner | IA | |
| Certified Registered Nurse Anesthetist (Crna) | MO | |
| Orthopedic Surgery | IA | |
| Physician Assistant | AZ | |
| Certified Registered Nurse Anesthetist (Crna) | NE | |
| Family Practice | IA | |
| Family Practice | NE | |
| - | IA | |
| - | IA |
Reviews
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