What is Oreste Castellanos's NPI number?

Oreste Castellanos's National Provider Identifier (NPI) is 1013945286, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Oreste Castellanos's specialty?

Oreste Castellanos is listed in the NPPES registry with a primary specialty of Adult Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Oreste Castellanos located?

Oreste Castellanos's practice location on file with NPPES is Ave Hostos, Mayaguez, PR 00682-6353.

What is Oreste Castellanos's phone number?

The practice phone number listed in the NPPES registry for Oreste Castellanos is (787) 834-6070.

Does Oreste Castellanos accept Medicare?

Oreste Castellanos is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Oreste Castellanos's NPI active?

Yes — Oreste Castellanos's NPI (1013945286) is active in the NPPES registry as of the last update on 2007-07-08.

IndividualActiveAccepts Medicare

Oreste Castellanos, M.D.

NPI 1013945286 · Adult Medicine Physician · Mayaguez, PR

Oreste Castellanos, M.D. is a Adult Medicine Physician provider in Mayaguez, PR (NPI 1013945286).

Provider details

NPI number: 1013945286
Entity type: Individual
Primary specialty: Adult Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: No
License: 9785 (PR)

Practice location

Ave Hostos

Centro Medico Ramon E. Betances

Mayaguez, PR 00682-6353

Phone: (787) 834-6070

Fax: (787) 834-5535

More PR providers

Mailing address

Po Box 8043

Mayaguez, PR 00681-8043

Specialties & taxonomies

Adult Medicine PhysicianPrimary207QA0505XLicense 9785 (PR)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(92/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure33% of score
20 yrs in NPPES registry
Profile completeness33% of score
100% of core fields populated
Practice footprint20% of score
1 documented practice location
Open Payments transparency13% of score
Has Open Payments disclosures (2024)

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 25 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Losartan Potassium	80	12
Levothyroxine Sodiumbrand: Synthroid	49	—
Atorvastatin Calcium	40	—
Omeprazole	40	—
Atenolol	37	—
Famotidine	36	—
Gabapentin	36

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$95 across 3 records (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Enumerated: 2006-06-28
Last updated: 2007-07-08

Frequently asked questions

What is Oreste Castellanos's NPI number?: Oreste Castellanos's National Provider Identifier (NPI) is 1013945286, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Oreste Castellanos's specialty?: Oreste Castellanos is listed in the NPPES registry with a primary specialty of Adult Medicine Physician (Allopathic & Osteopathic Physicians).
Where is Oreste Castellanos located?: Oreste Castellanos's practice location on file with NPPES is Ave Hostos, Mayaguez, PR 00682-6353.
What is Oreste Castellanos's phone number?: The practice phone number listed in the NPPES registry for Oreste Castellanos is (787) 834-6070.
Does Oreste Castellanos accept Medicare?: Oreste Castellanos is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Oreste Castellanos's NPI active?: Yes — Oreste Castellanos's NPI (1013945286) is active in the NPPES registry as of the last update on 2007-07-08.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider prescribes (Medicare Part D)

Transparency — industry payments