GREGORY R GAMBLA (DO) – Gastroenterology Physician, NPI 1801832167
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
978 GASTROENTEROLOGY in IL
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Provider Addresses for GREGORY R GAMBLA (DO)
Fletcher Drive Medical Center, 745, Fletcher Drive, Valley Creek, Elgin, Kane County, Illinois, 60123, United States
STE 202
ELGIN, IL 601234747
Phone: (847) 888-1300
Fax: (847) 888-1341
Type: Location
39W357 BAKER DR
GENEVA, IL 601346114
Phone: (630) 208-9848
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 92 Open Payments records for all available years, with a total value of $2,077.
Total Amount is formed as General ($2,077) + Research ($0) + Ownership ($0) = $2,077.
Last reported payment date: 2024-12-17 • Largest payer in this snapshot: Janssen Biotech, Inc. ($348).
Total Amount
$2,077
General + Research + Ownership
Payments
92
Total payment records
General Amount
$2,077
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
2
Ownership records
Last Payment Date
2024-12-17
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Janssen Biotech, Inc. | $348 |
| Takeda Pharmaceuticals U.S.A., Inc. | $288 |
| E.R. Squibb & Sons, L.L.C. | $250 |
| ABBVIE INC. | $162 |
| Celgene Corporation | $95 |
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: 2006-12-13
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 |
|---|---|---|---|---|
| I20061213000357 | I | Gastroenterology | 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.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 242 | 183 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 106 | 105 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 99 | 99 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 87 | 87 | $0 |
| 45380 | Biopsy of large bowel using a flexible endoscope | 74 | 74 | $0 |
Insurance plans in this area (ZIP 60123)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| GASTROENTEROLOGY | IL | 43235 | Diagnostic examination of esophagus, stomach, and/or upper small bowel using an endoscope | 18 | 18 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| G A S T R O E N T E R O L O G Y | IL | |
| Physician Assistant | IL | |
| Nurse Practitioner | IL | |
| Gastroenterology, Internal Medicine | IL | |
| G A S T R O E N T E R O L O G Y | IL | |
| P A T H O L O G Y | WI | |
| G A S T R O E N T E R O L O G Y | IL | |
| G A S T R O E N T E R O L O G Y | IL | |
| - | IL | |
| G A S T R O E N T E R O L O G Y | IL |
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