Elfren F. Rios Santiago, M.D.
Family Medicine Physician · Dorado, PR
Elfren F. Rios Santiago, M.D. is a family medicine physician with a practice address in Dorado, Puerto Rico, and NPI 1336124627, issued on Dec 9, 2005. Check the license (Puerto Rico 7399, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Elfren F. Rios Santiago
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 7399 PR
62 PR
Self-reported in NPPES; status is on the state search - Practice location
- Mendez Vigo #275, Dorado, PR 00646
- Phone
- (787) 796-6154
- Enumerated
- Dec 9, 2005
- Record last updated
- Nov 1, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (787) 278-5769
- Medicare enrollment
- Enrolled (PECOS I20101006000678); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 604 in Puerto Rico → Look up another NPI →
Verify Elfren F. Rios Santiago 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 7399Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% fewer Medicare Part D claims than the average family medicine physician in 2024
1,529 Medicare Part D claims for 191 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Synthroid101 claims
- Lisinopril60 claims
- Amlodipine Besylate52 claims
- Losartan Potassium49 claims
- Simvastatin48 claims
- Azithromycin44 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: $249.50
2 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 55,478 providers of this specialty with any payment received $902.55 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.
Elfren F. Rios Santiago among 604 family medicine physician records in Puerto Rico
Elfren F. Rios Santiago, M.D. is one of 604 family 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 86% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 39% of these records are
- Graduated1980 · median 1995 among the 234 with a school on file
- Record last updated2010 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
8 family medicine physician records list a practice address in Dorado
They are 8 of the 389 NPPES records with a practice address in Dorado, and 604 family medicine physician records in Puerto Rico.
All 604 in Puerto Rico → Every provider in Dorado → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Josue Canales Torres, M.D.,G.P.Dorado, PR 006461124011580
- Daniel Hernandez-Valentin, M.D.Dorado, PR 006461093920027
- Orley Johnson, M.D.Dorado, PR 006461033194907
- Keyla Romero Marrero, MDDorado, PR 006461851898142
- Josue Torres, MDDorado, PR 006461255165247
- Ida Villa Pastor, MDDorado, PR 006461821122656
- Julio Zuniga Hidalgo, MDDorado, PR 006461871616631
- Abdias De La Rosa Serrano, MDFlorida, PR 006501124234471
Common questions
What is Elfren F. Rios Santiago, M.D.'s NPI number?
Elfren F. Rios Santiago, M.D.'s National Provider Identifier (NPI) is 1336124627, issued on Dec 9, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Elfren F. Rios Santiago, M.D. located?
The NPPES record lists a practice address at Mendez Vigo #275, Dorado, PR, 00646. Phone: (787) 796-6154. Providers update this record themselves, so call before visiting.
How can I verify Elfren F. Rios Santiago, M.D.'s license?
NPPES lists Puerto Rico license number 7399, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Elfren F. Rios Santiago, M.D. prescribe under Medicare Part D?
In 2024, Elfren F. Rios Santiago, M.D. had 1,529 Medicare Part D claims for 191 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.