GREG HARMSTON (MD) – Family Medicine Physician, NPI 1679549877
Family Medicine Physician
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
5,037 FAMILY PRACTICE in IL
Provider Addresses for GREG HARMSTON (MD)
1120 Healthcare Dr
Mt Carroll, IL 610531461
Phone: (815) 244-4181
Type: Location
Midwest Medical Center, 1, Medical Center Drive, Galena, Jo Daviess County, Illinois, 61036, United States
GALENA, IL 610368118
Phone: (815) 776-7265
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 82 Open Payments records for all available years, with a total value of $1,527.
Total Amount is formed as General ($1,527) + Research ($0) + Ownership ($0) = $1,527.
Last reported payment date: 2024-11-22 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($443).
Total Amount
$1,527
General + Research + Ownership
Payments
82
Total payment records
General Amount
$1,527
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-22
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| AstraZeneca Pharmaceuticals LP | $443 |
| Amgen Inc. | $179 |
| Bayer Healthcare Pharmaceuticals Inc. | $147 |
| Janssen Pharmaceuticals, Inc | $139 |
| PFIZER INC. | $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: 2010-02-06
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 |
|---|---|---|---|---|
| I20100206000117 | I | Family Practice | IL | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 61053)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Emergency Medicine | WI | |
| Family Practice | IL | |
| - | IA | |
| Diagnostic Radiology | IA | |
| Emergency Medicine | IL | |
| Emergency Medicine | MI | |
| Certified Registered Nurse Anesthetist (Crna) | IL | |
| U R O L O G Y | IL | |
| Diagnostic Radiology | TX | |
| - | IA |
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