DR. GREG WAYNE GALLER (MD) – Gastroenterology Physician, NPI 1548356827
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,498 GASTROENTEROLOGY in TX
Provider Addresses for DR. GREG WAYNE GALLER (MD)
1111 Augusta Dr
Houston, TX 770572209
Phone: (713) 442-2400
Type: Location
Shadow Creek Parkway, Pearland, Brazoria County, Texas, 77047-4593, United States
PEARLAND, TX 775847298
Phone: (713) 442-0000
Type: Mailing
Spencer R. Berthelsen, M.D., Main Campus, 2727, West Holcombe Boulevard, Houston, Harris County, Texas, 77025, United States
3RD FLOOR
HOUSTON, TX 770251669
Phone: (713) 442-0000
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $30.
Total Amount is formed as General ($30) + Research ($0) + Ownership ($0) = $30.
Last reported payment date: 2024-04-25 • Largest payer in this snapshot: Boston Scientific Corporation ($16).
Total Amount
$30
General + Research + Ownership
Payments
2
Total payment records
General Amount
$30
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-04-25
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Boston Scientific Corporation | $16 |
| Takeda Pharmaceuticals U.S.A., Inc. | $14 |
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: 2004-03-01
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 |
|---|---|---|---|---|
| I20040301001209 | I | Gastroenterology | TX | 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 77057)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | TX | |
| - | TX | |
| Hospitalist, Internal Medicine | TX | |
| N E U R O L O G Y | TX | |
| D E R M A T O L O G Y | TX | |
| Critical Care (Intensivists), Internal Medicine, Pulmonary Disease | TX | |
| - | TX | |
| Physician Assistant | TX | |
| Family Practice | TX | |
| Physician Assistant | MA |
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