Ricardo Javier Sein-Najera, M.D.
Nuclear Imaging & Therapy Physician · San Juan, PR
Ricardo Javier Sein-Najera, M.D. is a nuclear imaging & therapy physician with a practice address in San Juan, Puerto Rico, and NPI 1376744615, issued on May 31, 2007. Check the license (Puerto Rico 18141, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ricardo Javier Sein-Najera
- Credential
- M.D.
- Primary taxonomy
- Nuclear Imaging & Therapy Physician 207UN0902X
- License number
- 18141 PR
Self-reported in NPPES; status is on the state search - Practice location
- Sein Medical Plaza 126 DE Diego Avenue, San Juan, PR 00921
- Phone
- (787) 758-0850
- Enumerated
- May 31, 2007
- Record last updated
- Jun 3, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20120220000699); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nuclear imaging & therapy physician records → All 13 in Puerto Rico → Look up another NPI →
Verify Ricardo Javier Sein-Najera 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 18141Check 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 nuclear imaging & therapy physician in 2024
14 Medicare Part D claims, against an average of 749 among the 26 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.
Bills Medicare through 4 group practices
- Centro DE Cancer DE LA UniversidadSan Juan, PR
- CT Radiology Complex LLCBayamon, PR
- CT Radiology Complex LLCBayamon, PR
- Monserrate Imaging Center PscCarolina, PR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ricardo Javier Sein-Najera among 13 nuclear imaging & therapy physician records in Puerto Rico
Ricardo Javier Sein-Najera, M.D. is one of 13 nuclear imaging & therapy physician records with a practice address in Puerto Rico. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 62% of them.
- NPI issued2007 · 62% of these records are older, 15% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 54% of these records are
- Record last updated2011 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207UN0902X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nuclear Imaging & Therapy Physician providers in Puerto Rico
There are 13 nuclear imaging & therapy physician records in Puerto Rico.
All 13 in Puerto Rico → Every provider in San Juan → Nuclear Imaging & Therapy Physician nationwide →
The 8 nuclear imaging & therapy physician records with the nearest ZIP codes
- Jorge Toro, MDSan Juan, PR 009231447247044
- Roberto Annexy Marquez, M.D.San Juan, PR 009181720285109
- Juan Fontanez, M.D.Hato Rey, PR 009171174567036
- Reinaldo Laguna -Figueroa, MDSanturce, PR 009121639145089
- Henry Ruberte, MDSan Juan, PR 009351376153536
- Frieda Silva - Hernandez, MDRio Piedras, PR 009351518947639
- Jose Vazquez - Selles, MDRio Piedras, PR 009351407826944
- Cesar Borri Sola, M.D.Bayamon, PR 009611417905563
Common questions
What is Ricardo Javier Sein-Najera, M.D.'s NPI number?
Ricardo Javier Sein-Najera, M.D.'s National Provider Identifier (NPI) is 1376744615, issued on May 31, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ricardo Javier Sein-Najera, M.D. located?
The NPPES record lists a practice address at Sein Medical Plaza 126 DE Diego Avenue, San Juan, PR, 00921. Phone: (787) 758-0850. Providers update this record themselves, so call before visiting.
How can I verify Ricardo Javier Sein-Najera, M.D.'s license?
NPPES lists Puerto Rico license number 18141, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Ricardo Javier Sein-Najera, M.D. prescribe under Medicare Part D?
In 2024, Ricardo Javier Sein-Najera, M.D. had 14 Medicare Part D claims; the average among nuclear imaging & therapy physician prescribers was 749. 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.