WILLIE C TEO ONG (M.D.) – Endocrinology, Diabetes & Metabolism Physician, NPI 1346247939
Endocrinology, Diabetes & Metabolism Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
660 ENDOCRINOLOGY in TX
Provider Addresses for WILLIE C TEO ONG (M.D.)
PO BOX 4448
BROWNSVILLE, TX 785234448
Phone: (956) 548-0077
Fax: (956) 548-2312
Type: Mailing
1040 W Jefferson St
Brownsville, TX 785206338
Phone: (956) 281-0945
Type: Location
Central Boulevard, Brownsville, Cameron County, Texas, 78520, United States
STE 370
BROWNSVILLE, TX 785207512
Phone: (956) 548-0077
Fax: (956) 548-2312
Type: Location
7624 WARREN PKWY
FRISCO, TX 750344158
Phone:
Type: Mailing
844 CENTRAL BLVD STE 280
BROWNSVILLE, TX 785207512
Phone: (956) 281-0945
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 42 Open Payments records for all available years, with a total value of $1,296.
Total Amount is formed as General ($1,296) + Research ($0) + Ownership ($0) = $1,296.
Last reported payment date: 2024-08-15 • Largest payer in this snapshot: Corcept Therapeutics ($220).
Total Amount
$1,296
General + Research + Ownership
Payments
42
Total payment records
General Amount
$1,296
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-08-15
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Corcept Therapeutics | $220 |
| Insulet Corporation | $198 |
| Novartis Pharmaceuticals Corporation | $150 |
| Lilly USA, LLC | $149 |
| Dexcom, Inc. | $120 |
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: 2004-08-03
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 |
|---|---|---|---|---|
| I20040803001758 | I | Endocrinology | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 391 | 168 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 314 | 147 | $0 |
| 95250 | Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with provider supplied equipment | 26 | 26 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 24 | 24 | $0 |
| 95251 | Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report | 19 | 18 | $0 |
Insurance plans in this area (ZIP 78523)
Loading plans...
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | TX | |
| - | TX | |
| Family Practice | TX | |
| Physical Therapist In Private Practice | TX | |
| - | TX | |
| - | TX | |
| - | TX | |
| O B S T E T R I C S/ G Y N E C O L O G Y | TX | |
| - | TX | |
| Cardiovascular Disease (Cardiology), Internal Medicine | NC |
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.