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JUSTINIANO CASTRO - MONTALVO MD
NPI 1811041114
Internal Medicine - Hematology & Oncology in Arecibo, PR

Active since January 23, 2007PECOS EnrolledAccepts Medicare Assignment
URB GARCIA CALLE ANDRES GARCIA NO. 53, ARECIBO, PR 00612(787) 817-4973(787) 817-4997 Get Directions Write a Review

NPPES record last updated: February 17, 2012. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Justiniano Castro - Montalvo Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JUSTINIANO CASTRO - MONTALVO MD (NPI 1811041114) is an individual hematology & oncology provider in Arecibo, Puerto Rico, licensed in Puerto Rico (10600) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS, is affiliated with Hospital Metropolitano Dr Susoni, and is a graduate of University Of Puerto Rico School Of Medicine (1987).

NPPES Registry Identity

NPI1811041114
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameJUSTINIANO CASTRO - MONTALVOCredential: MD
Location AddressURB GARCIA CALLE ANDRES GARCIA NO. 53Arecibo, PR 00612
Mailing Address425 Carr 693, Pmb 371Dorado, PR 00646-4802 · (787) 817-4973 · Fax (787) 817-4997
Phone(787) 817-4973
Fax(787) 817-4997
Sole ProprietorYes
Medical School CMSUniversity Of Puerto Rico School Of MedicineGraduated 1987
Enumeration DateJanuary 23, 2007
Last NPPES UpdateFebruary 17, 2012
✔ NPI 1811041114 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in PR · 10600
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

Other Identifiers 2

Medicare UPINF-51267PR
Medicare ID-Type Unspecified8-3263PR

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Justiniano Castro - Montalvo Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2961427216
PECOS Enrollment IDI20051006000292
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Justiniano Castro - Montalvo reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Centro De Cancer De La Universidad
Hematology & Oncology
PR 21 INT PR18, BO MONACILLO
San Juan, PR 00927
  • Reassigned Medicare billing, Puerto Rico enrollment
  • 87 clinicians in this Medicare group
NPI 1215418751 (787) 772-8300
Instituto Del Cancer Y Enfermedades De La Sangre, Csp
Hematology & Oncology
53 CALLE ANDRES GARCIA, URB GARCIA
Arecibo, PR 00612
  • Reassigned Medicare billing, Puerto Rico enrollment
  • 3 clinicians in this Medicare group
NPI 1891990123 (787) 817-4973
Recinto De Ciencias Medicas
Hematology & Oncology
AVE. AMERICO MIRANDA CENTRO MEDICO DE PR EDIF PRINCIPAL, ESCUELA DE MEDICINA APTDO. 29134
San Juan, PR 00936
  • Reassigned Medicare billing, Puerto Rico enrollment
  • 10 clinicians in this Medicare group
NPI 1316037955 (787) 758-2525

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Hospital Metropolitano Dr Susoni

Acute Care Hospitals · Arecibo, PR
OwnershipVoluntary non-profit - Private
CMS Certification Number400117
Location55 Palm StArecibo, PR 00614 · Arecibo County
Emergency services

Hospital Del Centro Comprensivo De Cancer

Acute Care Hospitals · San Juan, PR
OwnershipGovernment - State
CMS Certification Number400135
LocationPr 21 Int Pr 18 Bo Monacillos UrbanoSan Juan, PR 00927 · San Juan County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 00612 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$172.44 typical visit price
range $56.86 – $172.44
Typical copayment $43.11 (range $14.21 – $43.11)
Most-billed visit code 99205
Established Patient
$100.24 typical visit price
range $18.24 – $140.44
Typical copayment $25.06 (range $4.56 – $35.11)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Justiniano Castro - Montalvo's NPI number?

The NPI number for Justiniano Castro - Montalvo is 1811041114. It was assigned to this individual provider in the NPPES registry on January 23, 2007.

Where is Justiniano Castro - Montalvo located?

Justiniano Castro - Montalvo practices at Urb Garcia Calle Andres Garcia No. 53, Arecibo, PR 00612. The listed phone number is (787) 817-4973.

What is Justiniano Castro - Montalvo's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Justiniano Castro - Montalvo enrolled in Medicare?

Yes. Justiniano Castro - Montalvo is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Justiniano Castro - Montalvo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Justiniano Castro - Montalvo reassigns Medicare benefits to 3 organizations: Centro De Cancer De La Universidad (San Juan, PR), Instituto Del Cancer Y Enfermedades De La Sangre, Csp (Arecibo, PR) and Recinto De Ciencias Medicas (San Juan, PR). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Justiniano Castro - Montalvo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Justiniano Castro - Montalvo affiliated with any hospitals?

According to CMS data, Justiniano Castro - Montalvo is affiliated with Hospital Metropolitano Dr Susoni and Hospital Del Centro Comprensivo De Cancer.

When was this NPI record last updated?

The NPPES record for Justiniano Castro - Montalvo was last updated on February 17, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.