Internal Medicine, Hematology & Oncology · Arecibo, PR
NPI
1811041114
Since 2007
Specialty
Internal Medicine, Hematology & Oncology
Code 207RH0003X
Group practices
3
Medicare group memberships
Hospitals
2
Hospital affiliations
Urb Garcia Calle Andres Garcia No. 53
Arecibo, PR, 00612
Phone (787) 817-4973
Groups this clinician bills Medicare through
Medicare paid, 2024
$15K
2,321 services
Medicare patients, 2024
17
Average age 77
Drug cost, 2024
$5.0M
1,782 prescriptions
Company payments, 2025
$69.02
From 2 companies
Medicare prescription drug claims, 2024
In 2024, the drug Justiniano Castro - Montalvo prescribed most often to Medicare patients was Anastrozole, with 181 prescriptions and refills. In total Justiniano Castro - Montalvo wrote 1,782 Medicare prescriptions that cost $5.0M.
| Drug |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2012-02-17.
| Claims |
|---|
| 30-day fills |
|---|
| Patients |
|---|
| Cost |
|---|
| Anastrozole Generic | 181 | 205 | 32 | $2,542 |
| Gabapentin Generic | 84 | 89 | 32 | $661 |
| Letrozole Generic | 62 | 78 | 11 | $877 |
| Tramadol Hcl Generic | 62 | 62 | 35 | $588 |
| Revlimid Lenalidomide | 61 | 61 | Under 11 | $937K |
| Fentanyl Generic | 58 | 58 | 13 | $6,519 |
| Ondansetron Odt Ondansetron | 53 | 53 | 26 | $1,174 |
| Sucralfate Generic | 49 | 53 | 21 | $3,492 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 40 | 40 | Under 11 | $1,172 |
| Sprycel Dasatinib | 37 | 37 | Under 11 | $396K |
| Verzenio Abemaciclib | 33 | 33 | Under 11 | $482K |
| Dexamethasone Generic | 30 | 30 | 12 | $408 |
| Exemestane Generic | 29 | 29 | Under 11 | $1,671 |
| Imatinib Mesylate Generic | 29 | 29 | Under 11 | $3,081 |
| Prednisone Generic | 26 | 28 | 17 | $126 |
Brand drugs: 453 claims; generic drugs: 1,329 claims; opioid claims: 192.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Justiniano Castro - Montalvo $69.02 ($69.02 in general payments such as food, travel and fees) from 2 companies. The largest payer was Genentech USA, Inc. with $40.25.
Official US government data on Original Medicare services, Medicare prescription drug plans and the payments drug and device companies must report. Services with fewer than 11 patients and drugs with fewer than 11 claims are not published. Procedure codes are shown by number with their public category.