Efrain M. Flores De Hostos, MD
Nephrology Physician · Mayaguez, PR
Efrain M. Flores De Hostos, MD is a nephrology physician with a practice address in Mayaguez, Puerto Rico, and NPI 1083710164, issued on Sep 15, 2006. Check the license (Puerto Rico 6559, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Efrain M. Flores De Hostos
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 6559 PR
Self-reported in NPPES; status is on the state search - Practice location
- 1050 Los Corazones Ave, Mayaguez, PR 00680
- Phone
- (787) 834-5334
- Enumerated
- Sep 15, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (787) 833-6640
- Entity
- Type 1 · individual
Also registered at 1050 Los Corazones Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Oliver Guerrero Dujarric, MDNephrology Physician1861598039
- Roberto Lebron Rivera, MDNephrology Physician1215033493
- Enrique Lefevre, MDNephrology Physician1588760763
- Gerardo Medina Caban, MDNephrology Physician1003912288
- Francisco Reyes Vale, MDNephrology Physician1063518249
- Jorge Weber Acevedo, MDNephrology Physician1740386838
Verify Efrain M. Flores De Hostos 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 6559Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average nephrology physician in 2024
453 Medicare Part D claims for 29 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.
Most prescribed
- Sevelamer Carbonate112 claims
- Lanthanum Carbonate25 claims
- Bumetanide21 claims
- Renvela21 claims
- Irbesartan17 claims
- Atorvastatin Calcium16 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: $333.98
4 payments; by number, the most common kind was food and beverage; the largest payer was Travere Therapeutics, Inc. The 8,230 providers of this specialty with any payment received $3,091.37 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.
15 nephrology physician records list a practice address in Mayaguez
They are 15 of the 1,408 NPPES records with a practice address in Mayaguez, and 152 nephrology physician records in Puerto Rico.
All 15 in Mayaguez → All 152 in Puerto Rico → Every provider in Mayaguez →
Other nephrology physician records in Puerto Rico
- Jumana Abuomar, M.D.Canovanas, PR1104028307
- Dionisio Acosta, MDMayaguez, PR1659724615
- Juan Adams Chahin, M.D.San Juan, PR1861019747
- Marco Albarran Portilla, MDPonce, PR1720050230
- Ricardo Alicea-Guevara, M.D.Guaynabo, PR1083027007
- Praxedes Alvarez, M.D.Ponce, PR1609837285
- Sergio Alvarez Torres, M.DAdjuntas, PR1205286077
- Krystahl Andujar-Rivera, MDCarolina, PR1902241169
- Alberto Arevalo Roig, MDArecibo, PR1598845398
- Jannice Arroyo Soto, M.DPonce, PR1710288550
Common questions
What is Efrain M. Flores De Hostos, MD's NPI number?
Efrain M. Flores De Hostos, MD's National Provider Identifier (NPI) is 1083710164, issued on Sep 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Efrain M. Flores De Hostos, MD located?
The NPPES record lists a practice address at 1050 Los Corazones Ave, Mayaguez, PR, 00680. Phone: (787) 834-5334. Providers update this record themselves, so call before visiting.
How can I verify Efrain M. Flores De Hostos, MD's license?
NPPES lists Puerto Rico license number 6559, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Efrain M. Flores De Hostos, MD prescribe under Medicare Part D?
In 2024, Efrain M. Flores De Hostos, MD had 453 Medicare Part D claims for 29 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.