Wilfredo Alonso, M.D.
Internal Medicine Physician · Aguadilla, PR
Wilfredo Alonso, M.D. is an internal medicine physician with a practice address in Aguadilla, Puerto Rico, and NPI 1790923050, issued on Jan 25, 2009. Check the license (Puerto Rico 17417, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Wilfredo Alonso
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 17417 PR
Self-reported in NPPES; status is on the state search - Practice location
- Lobby Buen Samaritano, Aguadilla, PR 00603
- Phone
- (787) 882-9900
- Enumerated
- Jan 25, 2009
- Record last updated
- Feb 24, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (787) 882-9901
- Medicare enrollment
- Enrolled (PECOS I20100222000695); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 2005
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,146 in Puerto Rico → Look up another NPI →
Verify Wilfredo Alonso 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 17417Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.5 times the Medicare Part D claims of the average internal medicine physician in 2024
10,996 Medicare Part D claims for 542 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 54 claims were for opioids.
Most prescribed
- Gabapentin734 claims
- Losartan Potassium516 claims
- Simvastatin502 claims
- Atorvastatin Calcium496 claims
- Metformin Hcl436 claims
- Lisinopril299 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: $481.00
12 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Wilfredo Alonso among 1,146 internal medicine physician records in Puerto Rico
Wilfredo Alonso, 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 2009, is newer than 62% of them.
- NPI issued2009 · 62% of these records are older, 37% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated2005 · median 1996 among the 595 with a school on file
- Record last updated2014 · 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).
24 internal medicine physician records list a practice address in Aguadilla
They are 24 of the 649 NPPES records with a practice address in Aguadilla, and 1,146 internal medicine physician records in Puerto Rico.
All 1,146 in Puerto Rico → Every provider in Aguadilla → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Roberto Alers Fernandez, M.D.Aguadilla, PR 006031417952649
- Oscar Caban Badillo, MDAguadilla, PR 006031578602629
- Christian Colon RipollAguadilla, PR 006031497173546
- Pedro Falto Detres, MDAguadilla, PR 006031194796433
- Vivian GarzaAguadilla, PR 006031003395062
- Gilmar Gonzalez Romero, M.D.Aguadilla, PR 006031083945661
- Annabelle Lipsett, M.D.Aguadilla, PR 006031265489272
- Aldo Perez, M.D.Aguadilla, PR 006031407123391
Common questions
What is Wilfredo Alonso, M.D.'s NPI number?
Wilfredo Alonso, M.D.'s National Provider Identifier (NPI) is 1790923050, issued on Jan 25, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Wilfredo Alonso, M.D. located?
The NPPES record lists a practice address at Lobby Buen Samaritano, Aguadilla, PR, 00603. Phone: (787) 882-9900. Providers update this record themselves, so call before visiting.
How can I verify Wilfredo Alonso, M.D.'s license?
NPPES lists Puerto Rico license number 17417, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Wilfredo Alonso, M.D. prescribe under Medicare Part D?
In 2024, Wilfredo Alonso, M.D. had 10,996 Medicare Part D claims for 542 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.