Doctor profile · Federal record
Dr. Diane Duyen Nguyen, DO
Medical Oncology Physician (CMS: Medical Oncology) · Hematology & Oncology Physician · Hematology & Oncology Physician · McAllen, TX
- NPI 1023233756
- Accepts Medicare
- 25 yrs in practice
- Licensed in 2 states
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
205 E Toronto Ave
McAllen, TX 785031209
(956) 296-3990
fax (956) 665-6837 - Additional location
-
27700 Northwest Fwy Ste 580
Cypress, TX 774336766
(832) 791-5530 - Additional location
-
602 Indiana Ave
Lubbock, TX 794153364
(806) 775-8600
fax (806) 775-8602 - Mailing address
-
Po Box 531968
Harlingen, TX 785531968
Credentials & registration
- NPI registered
- April 2007 — 19 yrs on file
- Profile last updated
- October 3, 2024
- Year of graduation
- 2001 — 25 yrs since
- Specialty taxonomy
- 207RX0202X — NUCC code
- State licenses (2)
- Texas #M3045 · Tennessee #DO1698
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1023233756. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
704
Distinct HCPCS
10
Medicare allowed
$54,582
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
88185 |
Flow cytometry technique for dna or cell analysis, each additional marker | 276 | 12 | $24 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 108 | 48 | $127 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 88 | 46 | $172 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 54 | 24 | $121 | |
96367 |
Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less | 51 | 12 | $28 | |
96372 |
Injection of drug or substance under skin or into muscle | 35 | 11 | $14 | |
96365 |
Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | 27 | 11 | $59 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 21 | 20 | $176 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 18 | 18 | $223 | |
G2212 |
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or | 14 | 11 | $33 |
In context: peer comparison
Among 5 peers in this city , average services per provider: 1,175. This provider delivers 0.6× the peer median.Open Payments
Industry payments received
All-time total
$269
Transactions
8
Manufacturers
7
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| AstraZeneca Pharmaceuticals LP | 1 | $99.79 | |
| Emmaus Medical, Inc. | 2 | $68.05 | |
| TAIHO ONCOLOGY, INC. | 1 | $29.07 | |
| BeiGene USA, Inc. | 1 | $21.65 | |
| SpringWorks Therapeutics, Inc. | 1 | $20.39 | |
| ALK-Abello, Inc | 1 | $16.52 | |
| Azurity Pharmaceuticals, Inc. | 1 | $13.29 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
192
Patients
24
Total drug cost
$214,057
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Dexamethasone | Generic | 39 | 11 | $448 |
| Anastrozole | Generic | 30 | 0 | $1,049 |
| Eliquis (Apixaban) | Brand | 21 | 0 | $11,571 |
| Ondansetron Hcl | Generic | 21 | 13 | $256 |
| Tamoxifen Citrate | Generic | 21 | 0 | $854 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 19 | 0 | $398 |
| Xarelto (Rivaroxaban) | Brand | 18 | 0 | $20,832 |
| Xtandi (Enzalutamide) | Brand | 12 | 0 | $178,598 |
| Prednisone | Generic | 11 | 0 | $51 |
Frequently asked questions
What is Dr. Diane Duyen Nguyen's medical specialty?
Dr. Diane Duyen Nguyen practices Medical Oncology Physician in McAllen, TX.
Where does Dr. Diane Duyen Nguyen practice?
Dr. Diane Duyen Nguyen practices at 205 E Toronto Ave, McAllen, TX 785031209. Office phone: 9562963990.
What is Dr. Diane Duyen Nguyen's NPI?
Dr. Diane Duyen Nguyen's National Provider Identifier (NPI) is 1023233756, issued by NPPES.
Does Dr. Diane Duyen Nguyen accept Medicare assignment?
Yes. Dr. Diane Duyen Nguyen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Diane Duyen Nguyen commonly perform?
Top Medicare-reported procedures in 2023: Flow cytometry technique for dna or cell analysis, each additional marker (HCPCS 88185); Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.