Xavier E. Santiago-Albizu, M.D.
Internal Medicine Physician · Santurce, PR
Xavier E. Santiago-Albizu, M.D. is an internal medicine physician with a practice address in Santurce, Puerto Rico, and NPI 1356627657, issued on Oct 31, 2011. Check the license (Puerto Rico 19,926, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Xavier E. Santiago-Albizu
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 19,926 PR
002548 NY
Self-reported in NPPES; status is on the state search - Practice location
- 607 Ave Condado, Santurce, PR 00907
- Phone
- (787) 234-2535
- Enumerated
- Oct 31, 2011
- Record last updated
- Jul 22, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20151116001014); accepts Medicare assignment
- Medical or professional school
- University Of Puerto Rico School Of Medicine, 2011
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,146 in Puerto Rico → Look up another NPI →
Also registered at 607 Ave Condado
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Xavier E. Santiago-Albizu 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 19,926Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
67 Medicare Part D claims for 11 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
One hospital affiliation
- Hospital Menonita DE CayeyCayey, PR · Acute Care Hospitals
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).
Xavier E. Santiago-Albizu among 1,146 internal medicine physician records in Puerto Rico
Xavier E. Santiago-Albizu, M.D. is one of 1,146 internal medicine physician records with a practice address in Puerto Rico. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 64% of them.
- NPI issued2011 · 64% of these records are older, 35% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated2011 · median 1996 among the 595 with a school on file
- Record last updated2015 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 internal medicine physician records list a practice address in Santurce
They are 6 of the 201 NPPES records with a practice address in Santurce, and 1,146 internal medicine physician records in Puerto Rico.
All 1,146 in Puerto Rico → Every provider in Santurce → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Rafael Bermudez, M.D.San Juan, PR 009071285733691
- Frances Franceschi Nazario, M.D.San Juan, PR 009071790736569
- Raul Hernandez Chuan, MDSan Juan, PR 009071730120098
- Jellytza Maldonado, MDSan Juan, PR 009071316928625
- Carlos Matos, MDSantarce, PR 009071912989609
- Yolando Mendez/crespo, MDSan Juan, PR 009071326046038
- Ernesto Munoz Vilches, MDSan Juan, PR 009071861436461
- Karen Ossa, M.D.San Juan, PR 009071801005418
Common questions
What is Xavier E. Santiago-Albizu, M.D.'s NPI number?
Xavier E. Santiago-Albizu, M.D.'s National Provider Identifier (NPI) is 1356627657, issued on Oct 31, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Xavier E. Santiago-Albizu, M.D. located?
The NPPES record lists a practice address at 607 Ave Condado, Santurce, PR, 00907. Phone: (787) 234-2535. Providers update this record themselves, so call before visiting.
How can I verify Xavier E. Santiago-Albizu, M.D.'s license?
NPPES lists Puerto Rico license number 19,926, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Xavier E. Santiago-Albizu, M.D. prescribe under Medicare Part D?
In 2024, Xavier E. Santiago-Albizu, M.D. had 67 Medicare Part D claims for 11 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.