Doctor profile · Federal record
Dr. Rene Castillo, MD
Medical Oncology Physician (CMS: Medical Oncology) · Hematology & Oncology Physician · Hematology & Oncology Physician · Austin, TX
- NPI 1134186166
- Accepts Medicare
- MIPS 86.7 / 100 · 2023
- 39 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
4101 James Casey St Ste 100
Austin, TX 787451145
(512) 447-2202
fax (512) 447-5337 - Mailing address
-
Po Box 911230
Dallas, TX 753911230
Credentials & registration
- NPI registered
- April 2006 — 20 yrs on file
- Profile last updated
- February 10, 2023
- Year of graduation
- 1987 — 39 yrs since
- Specialty taxonomy
- 207RX0202X — NUCC code
- State licenses (2)
- Texas #M3964 · Louisiana #MD.12610R
- Medicaid (2)
- TX #182873303 · TX #182873302
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1134186166. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
243,953
Distinct HCPCS
10
Medicare allowed
$2,551,171
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
Q0138 |
Injection, ferumoxytol, for treatment of iron deficiency anemia, 1 mg (non-esrd use) | 68,850 | 52 | $1 | |
J1756 |
Injection, iron sucrose, 1 mg | 61,300 | 59 | $0 | |
J0881 |
Injection, darbepoetin alfa, 1 microgram (non-esrd use) | 16,830 | 13 | $3 | |
J9271 |
Injection, pembrolizumab, 1 mg | 15,300 | 29 | $54 | |
J9263 |
Injection, oxaliplatin, 0.5 mg | 11,000 | 13 | $0 | |
J9299 |
Injection, nivolumab, 1 mg | 10,800 | 14 | $30 | |
J9267 |
Injection, paclitaxel, 1 mg | 10,752 | 15 | $0 | |
J1453 |
Injection, fosaprepitant, 1 mg | 9,300 | 23 | $0 | |
J9144 |
Injection, daratumumab, 10 mg and hyaluronidase-fihj | 7,920 | 11 | $48 | |
J0897 |
Injection, denosumab, 1 mg | 6,000 | 26 | $23 |
In context: peer comparison
Among 10 peers in this city , average services per provider: 1,866. This provider delivers 131× the peer median.Open Payments
Industry payments received
All-time total
$148
Transactions
7
Manufacturers
6
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Janssen Pharmaceuticals, Inc | 1 | $37.94 | |
| JAZZ PHARMACEUTICALS INC. | 2 | $30.44 | |
| AstraZeneca Pharmaceuticals LP | 1 | $21.50 | |
| Novartis Pharmaceuticals Corporation | 1 | $20.40 | |
| PFIZER INC. | 1 | $20.38 | |
| Regeneron Healthcare Solutions, Inc. | 1 | $17.02 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,475
Patients
376
Total drug cost
$1,362,907
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Letrozole | Generic | 358 | 89 | $10,332 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 138 | 36 | $6,567 |
| Xarelto (Rivaroxaban) | Brand | 121 | 27 | $126,645 |
| Tamoxifen Citrate | Generic | 115 | 27 | $3,776 |
| Anastrozole | Generic | 111 | 36 | $3,148 |
| Hydroxyurea | Generic | 100 | 26 | $5,136 |
| Eliquis (Apixaban) | Brand | 91 | 21 | $67,437 |
| Ibrance (Palbociclib) | Brand | 71 | 0 | $1,125,701 |
| Gabapentin | Generic | 69 | 18 | $1,053 |
| Morphine Sulfate Er (Morphine Sulfate) | Brand | 58 | 11 | $1,368 |
Hospital affiliations
Frequently asked questions
What is Dr. Rene Castillo's medical specialty?
Dr. Rene Castillo practices Medical Oncology Physician in Austin, TX.
Where does Dr. Rene Castillo practice?
Dr. Rene Castillo practices at 4101 James Casey St Ste 100, Austin, TX 787451145. Office phone: 5124472202.
What is Dr. Rene Castillo's NPI?
Dr. Rene Castillo's National Provider Identifier (NPI) is 1134186166, issued by NPPES.
Does Dr. Rene Castillo accept Medicare assignment?
Yes. Dr. Rene Castillo accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Rene Castillo commonly perform?
Top Medicare-reported procedures in 2023: Injection, ferumoxytol, for treatment of iron deficiency anemia, 1 mg (non-esrd use) (HCPCS Q0138); Injection, iron sucrose, 1 mg (HCPCS J1756); Injection, darbepoetin alfa, 1 microgram (non-esrd use) (HCPCS J0881). Source: CMS Medicare Physician & Other Practitioners file.