Monica Santiago Casiano, M.D.
NPI 1396920518 · Hematology & Oncology Physician · Yauco, Puerto Rico, PR
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Monica Santiago Casiano, M.D. is a Hematology & Oncology Physician provider in Yauco, Puerto Rico, PR (NPI 1396920518).
Provider details
- NPI number
- 1396920518
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 17172 (PR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
18 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- 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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Exemestanebrand: Aromasin | 40 |
| Lenalidomidebrand: Revlimid | 37 |
| Anastrozolebrand: Arimidex | 31 |
| Pantoprazole Sodium | 29 |
| Prednisone | 16 |
| Anastrozole | 14 |
| Ondansetron Hcl | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,386 across 60 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.
Practice location
Mailing address
Additional practice locations (1)
- Hospital Municipal Centro Medico Cmms #79Departamento De Medicina InternaSanjuan, PR 00936-8344Phone: (787) 765-5147
Registry dates
- Enumerated
- 2008-01-07
- Last updated
- 2021-12-13
- Certified
- 2021-12-10
Frequently asked questions
- What is Monica Santiago Casiano's NPI number?
- Monica Santiago Casiano's National Provider Identifier (NPI) is 1396920518, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Monica Santiago Casiano's specialty?
- Monica Santiago Casiano is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Monica Santiago Casiano located?
- Monica Santiago Casiano's practice location on file with NPPES is Centro Profesional Del Sur, Yauco, Puerto Rico, PR 00698-0000.
- What is Monica Santiago Casiano's phone number?
- The practice phone number listed in the NPPES registry for Monica Santiago Casiano is (787) 957-3111.
- Does Monica Santiago Casiano accept Medicare?
- Monica Santiago Casiano is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Monica Santiago Casiano's NPI active?
- Yes — Monica Santiago Casiano's NPI (1396920518) is active in the NPPES registry as of the last update on 2021-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.