Doctor profile · Federal record
Dr. Justiniano Castro - Montalvo, MD
Hematology & Oncology Physician (CMS: Hematology/Oncology) · Arecibo, PR
- NPI 1811041114
- Accepts Medicare
- 39 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
Urb Garcia Calle Andres Garcia No. 53
Arecibo, PR 00612
(787) 817-4973
fax (787) 817-4997 - Mailing address
-
425 Carr 693, Pmb 371
Dorado, PR 006464802
Credentials & registration
- NPI registered
- January 2007 — 19 yrs on file
- Profile last updated
- February 17, 2012
- Year of graduation
- 1987 — 39 yrs since
- Specialty taxonomy
- 207RH0003X — NUCC code
- State license (1)
- Puerto Rico #10600
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1811041114. Last verified May 11, 2026.Open Payments
Industry payments received
All-time total
$20
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Karyopharm Therapeutics Inc. | 1 | $19.95 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
789
Patients
219
Total drug cost
$1,821,631
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Anastrozole | Generic | 220 | 44 | $2,245 |
| Gabapentin | Generic | 85 | 29 | $704 |
| Tramadol Hcl | Generic | 60 | 30 | $321 |
| Revlimid (Lenalidomide) | Brand | 50 | 0 | $792,292 |
| Famotidine | Generic | 47 | 19 | $424 |
| Sprycel (Dasatinib) | Brand | 43 | 0 | $425,881 |
| Letrozole | Generic | 41 | 0 | $507 |
| Sucralfate | Generic | 34 | 21 | $2,055 |
| Nerlynx (Neratinib Maleate) | Brand | 33 | 0 | $592,316 |
| Prednisone | Generic | 32 | 18 | $178 |
Frequently asked questions
What is Dr. Justiniano Castro - Montalvo's medical specialty?
Dr. Justiniano Castro - Montalvo practices Hematology & Oncology Physician in Arecibo, PR.
Where does Dr. Justiniano Castro - Montalvo practice?
Dr. Justiniano Castro - Montalvo practices at Urb Garcia Calle Andres Garcia No. 53, Arecibo, PR 00612. Office phone: 7878174973.
What is Dr. Justiniano Castro - Montalvo's NPI?
Dr. Justiniano Castro - Montalvo's National Provider Identifier (NPI) is 1811041114, issued by NPPES.
Does Dr. Justiniano Castro - Montalvo accept Medicare assignment?
Yes. Dr. Justiniano Castro - Montalvo accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.