Karen J. Santiago Rios, M.D.
Hematology & Oncology Physician · Cidra Puerto Rico, PR
Karen J. Santiago Rios, M.D. is a hematology & oncology physician with a practice address in Cidra Puerto Rico, Puerto Rico, and NPI 1396846119, issued on Sep 26, 2006. Check the license (Puerto Rico 16015, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karen J. Santiago Rios
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 16015 PR
Self-reported in NPPES; status is on the state search - Practice location
- 102 Avenida Industrial EL Jibaro, Cidra Puerto Rico, PR 00739
- Phone
- (787) 637-5715
- Enumerated
- Sep 26, 2006
- Record last updated
- Feb 11, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (787) 739-9922
- Medicare enrollment
- Enrolled (PECOS I20110401000553); accepts Medicare assignment
- Medical or professional school
- Ponce School Of Medicine, 2002
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 134 in Puerto Rico → Look up another NPI →
Verify Karen J. Santiago Rios in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Puerto Rico board licenses this profession
Search for license 16015Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
248 Medicare Part D claims for 52 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Anastrozole75 claims
- Dexamethasone24 claims
- Imbruvica24 claims
- Hydroxyurea15 claims
- Ondansetron Hcl13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $2,571.18
110 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Caribbean Cancer Care Services LLCSan Juan, PR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen J. Santiago Rios among 134 hematology & oncology physician records in Puerto Rico
Karen J. Santiago Rios, M.D. is one of 134 hematology & oncology physician records with a practice address in Puerto Rico. 91% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 51% newer
- In a Medicare fileYes · 91% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2002 · median 2001 among the 98 with a school on file
- Record last updated2015 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Puerto Rico
There are 134 hematology & oncology physician records in Puerto Rico.
All 134 in Puerto Rico → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Luz Cortes, MDFajardo, PR 007381205897352
- Josselyn Molina Avila, M.D.Fajardo, PR 007381962818872
- Carlos Tejeda, M.D.Fajardo, PR 007381366574725
- Doris Colon, M.D.Cayey, PR 007361477545929
- Alicia Mendez, M.D.Cayey, PR 007361164414686
- Omayra Reyes Santiago, M.D.Cayey, PR 007361124287313
- Jose Cangiano, M.D.Ponce, PR 007301114961091
- Amy Cabrera, MDCanovanas, PR 007291831454123
Common questions
What is Karen J. Santiago Rios, M.D.'s NPI number?
Karen J. Santiago Rios, M.D.'s National Provider Identifier (NPI) is 1396846119, issued on Sep 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karen J. Santiago Rios, M.D. located?
The NPPES record lists a practice address at 102 Avenida Industrial EL Jibaro, Cidra Puerto Rico, PR, 00739. Phone: (787) 637-5715. Providers update this record themselves, so call before visiting.
How can I verify Karen J. Santiago Rios, M.D.'s license?
NPPES lists Puerto Rico license number 16015, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Karen J. Santiago Rios, M.D. prescribe under Medicare Part D?
In 2024, Karen J. Santiago Rios, M.D. had 248 Medicare Part D claims for 52 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.