ABRAHAM WINKELSTEIN – Gastroenterology Physician, NPI 1548260920
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,498 GASTROENTEROLOGY in TX
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Provider Addresses for ABRAHAM WINKELSTEIN
Box Turtle, Grogan's Mill, The Woodlands, Montgomery County, Texas, United States
THE WOODLANDS, TX 773930894
Phone: (936) 321-0033
Fax: (936) 321-0032
Type: Mailing
111, Vision Park Boulevard, Shenandoah, Montgomery County, Texas, 77384, United States
STE 150
SHENANDOAH, TX 773843002
Phone: (936) 321-0033
Fax: (936) 321-0032
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2010-08-25
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 |
|---|---|---|---|---|
| I20100825000409 | 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.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 45380 | Biopsy of large bowel using a flexible endoscope | 163 | 162 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 157 | 155 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 129 | 116 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 119 | 116 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 67 | 67 | $0 |
Insurance plans in this area (ZIP 77393)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| GASTROENTEROLOGY | TX | 43235 | Diagnostic examination of esophagus, stomach, and/or upper small bowel using an endoscope | 11 | 11 |
| GASTROENTEROLOGY | TX | 45378 | Diagnostic examination of large bowel using an endoscope | 12 | 12 |
| GASTROENTEROLOGY | TX | 45385 | Removal of polyps or growths of large bowel using an endoscope | 59 | 59 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| G A S T R O E N T E R O L O G Y | TX | |
| G A S T R O E N T E R O L O G Y | TX | |
| Pathology, Hematology | TX | |
| G A S T R O E N T E R O L O G Y | TX | |
| - | TX | |
| Physician Assistant | TX |
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