Doctor profile · Federal record
Dr. Willie Teo Ong, M.D.
Endocrinology, Diabetes & Metabolism Physician (CMS: Endocrinology) · Brownsville, TX
- NPI 1346247939
- Accepts Medicare
- 37 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
844 Central Blvd Ste 280
Brownsville, TX 785207512
(956) 281-0945 - Additional location
-
1040 W Jefferson St
Brownsville, TX 785206338 - Mailing address
-
7624 Warren Pkwy
Frisco, TX 750344158
Credentials & registration
- NPI registered
- June 2005 — 21 yrs on file
- Profile last updated
- December 2, 2020
- Year of graduation
- 1989 — 37 yrs since
- Specialty taxonomy
- 207RE0101X — NUCC code
- State license (1)
- Texas #K1094
- Medicaid
- TX #166405401
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1346247939. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
792
Distinct HCPCS
6
Medicare allowed
$83,036
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 391 | 168 | $122 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 314 | 147 | $86 | |
95250 |
Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with provider supplied equipment | 26 | 26 | $138 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 24 | 24 | $159 | |
95251 |
Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report | 19 | 18 | $33 | |
83036 |
Hemoglobin a1c level | 18 | 16 | $10 |
In context: peer comparison
Among 1 peers in this city , average services per provider: 132. This provider delivers 6.0× the peer median.Open Payments
Industry payments received
All-time total
$554
Transactions
9
Manufacturers
5
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Corcept Therapeutics | 3 | $220.46 | |
| Insulet Corporation | 2 | $140.01 | |
| Abbott Laboratories | 2 | $117.04 | |
| Mannkind Corporation | 1 | $62.18 | |
| Lilly USA, LLC | 1 | $13.86 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
3,281
Patients
1,087
Total drug cost
$3,603,442
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levothyroxine Sodium | Generic | 499 | 163 | $10,197 |
| Ozempic (Semaglutide) | Brand | 462 | 127 | $953,084 |
| Metformin Hcl | Generic | 328 | 122 | $4,653 |
| Novolog Mix 70-30 Flexpen (Insulin Aspart Prot/Insuln Asp) | Brand | 317 | 89 | $805,198 |
| Farxiga (Dapagliflozin Propanediol) | Brand | 293 | 91 | $410,227 |
| Jardiance (Empagliflozin) | Brand | 292 | 97 | $479,377 |
| Humalog Mix 75-25 Kwikpen (Insulin Lispro Protamin/Lispro) | Brand | 266 | 98 | $824,596 |
| Atorvastatin Calcium | Generic | 169 | 64 | $2,676 |
| Nano 2nd Gen Pen Needle (Pen Needle, Diabetic) | Brand | 115 | 46 | $10,057 |
| Ultra-Fine Mini Pen Needle (Pen Needle, Diabetic) | Brand | 109 | 52 | $11,753 |
Frequently asked questions
What is Dr. Willie Teo Ong's medical specialty?
Dr. Willie Teo Ong practices Endocrinology, Diabetes & Metabolism Physician in Brownsville, TX.
Where does Dr. Willie Teo Ong practice?
Dr. Willie Teo Ong practices at 844 Central Blvd Ste 280, Brownsville, TX 785207512. Office phone: 9562810945.
What is Dr. Willie Teo Ong's NPI?
Dr. Willie Teo Ong's National Provider Identifier (NPI) is 1346247939, issued by NPPES.
Does Dr. Willie Teo Ong accept Medicare assignment?
Yes. Dr. Willie Teo Ong accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Willie Teo Ong commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with provider supplied equipment (HCPCS 95250). Source: CMS Medicare Physician & Other Practitioners file.