GREG J JUN (MD) – Internal Medicine Physician, NPI 1043212780
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
12,368 INTERNAL MEDICINE in FL
Provider Addresses for GREG J JUN (MD)
650 DAKOTA ST STE A
CRYSTAL LAKE, IL 600123744
Phone: (815) 455-6000
Fax: (815) 356-3914
Type: Mailing
779 KRISTINE WAY
THE VILLAGES, FL 321630099
Phone: (352) 674-6020
Fax: (352) 674-6030
Type: Location
Brownwood Boulevard, Wildwood, The Villages, Sumter County, Florida, 34785, United States
THE VILLAGES, FL 321632032
Phone: (352) 674-1790
Fax: (352) 674-8990
Type: Location
1050 Old Camp Rd Ste 100
The Villages, FL 321621762
Phone: (352) 674-1760
Fax: (352) 674-8960
Type: Location
1020 LAKE SUMTER LNDG
THE VILLAGES, FL 321622699
Phone: (352) 674-8905
Fax: (352) 674-8901
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $276.
Total Amount is formed as General ($276) + Research ($0) + Ownership ($0) = $276.
Last reported payment date: 2024-10-17 • Largest payer in this snapshot: Edwards Lifesciences Corporation ($154).
Total Amount
$276
General + Research + Ownership
Payments
2
Total payment records
General Amount
$276
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-17
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Edwards Lifesciences Corporation | $154 |
| Boston Scientific Corporation | $123 |
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: 2020-05-06
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20040726001146 | I | Internal Medicine | IL | TBD |
| I20200506000835 | I | Internal Medicine | FL | 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 60012)
Loading plans...
Group practice members
| Name | Specialty | State |
|---|---|---|
| U R O L O G Y | IL | |
| Family Practice | IL | |
| - | FL | |
| Family Practice | FL | |
| Internal Medicine | FL | |
| Nurse Practitioner | FL | |
| Family Practice | FL | |
| Nurse Practitioner | NJ | |
| Qualified Audiologist | FL | |
| Nurse Practitioner | FL |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.