WINNIE SZETO (MD) – Gastroenterology Physician, NPI 1588899504
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
829 GASTROENTEROLOGY in MA
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Provider Addresses for WINNIE SZETO (MD)
20, Research Place, Chelmsford, Middlesex County, Massachusetts, 01863, United States
STE 220
NORTH CHELMSFORD, MA 018632455
Phone: (617) 562-5432
Type: Mailing
Research Place, Chelmsford, Middlesex County, Massachusetts, 01863, United States
NORTH CHELMSFORD, MA 018632455
Phone: (978) 459-6737
Fax: (855) 818-1869
Type: Location
41 WELLMAN ST STE 400
LOWELL, MA 018515161
Phone: (617) 562-5432
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 75 Open Payments records for all available years, with a total value of $1,685.
Total Amount is formed as General ($1,685) + Research ($0) + Ownership ($0) = $1,685.
Last reported payment date: 2024-12-18 • Largest payer in this snapshot: ABBVIE INC. ($485).
Total Amount
$1,685
General + Research + Ownership
Payments
75
Total payment records
General Amount
$1,685
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-18
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $485 |
| Takeda Pharmaceuticals U.S.A., Inc. | $319 |
| PFIZER INC. | $258 |
| GENZYME CORPORATION | $149 |
| E.R. Squibb & Sons, L.L.C. | $133 |
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: 2017-06-23
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 |
|---|---|---|---|---|
| I20170623001556 | I | Gastroenterology | MA | 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 | 117 | 72 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 62 | 62 | $0 |
| 45380 | Biopsy of large bowel using a flexible endoscope | 44 | 43 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 42 | 28 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 39 | 39 | $0 |
Insurance plans in this area (ZIP 01863)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| P A T H O L O G Y | MA | |
| G A S T R O E N T E R O L O G Y | MA | |
| G A S T R O E N T E R O L O G Y | MA | |
| Certified Registered Nurse Anesthetist (Crna) | ME | |
| Gastroenterology, Internal Medicine | MA | |
| Certified Registered Nurse Anesthetist (Crna) | MA | |
| Gastroenterology, Internal Medicine | MA | |
| Certified Registered Nurse Anesthetist (Crna) | NH | |
| Physical Therapist In Private Practice | MA | |
| G A S T R O E N T E R O L O G Y | MA |
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