Alfredo Ayala Marrero, MD
General Practice Physician · San Juan, PR
Alfredo Ayala Marrero, MD is a general practice physician with a practice address in San Juan, Puerto Rico, and NPI 1881658284, issued on Apr 13, 2006. Check the license (Puerto Rico 7230, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Alfredo Ayala Marrero
- Credential
- MD
- Primary taxonomy
- General Practice Physician 208D00000X
- License number
- 7230 PR
Self-reported in NPPES; status is on the state search - Practice location
- Avenida DE Diego 150, San Juan, PR 00907
- Phone
- (787) 230-7557
- Enumerated
- Apr 13, 2006
- Record last updated
- Oct 11, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20071207000146); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest general practice physician records → All 4,170 in Puerto Rico → Look up another NPI →
Verify Alfredo Ayala Marrero 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 7230Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average general practice physician in 2024
84 Medicare Part D claims for 14 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.
Most prescribed
- Metoprolol Succinate24 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.
Bills Medicare through one group practice
- Condado Wellness Center PscSan Juan, PR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alfredo Ayala Marrero among 4,170 general practice physician records in Puerto Rico
Alfredo Ayala Marrero, MD is one of 4,170 general practice physician records with a practice address in Puerto Rico. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 65% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 29% of these records are
- Graduated1981 · median 2004 among the 1,228 with a school on file
- Record last updated2019 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
622 general practice physician records list a practice address in San Juan
They are 622 of the 8,960 NPPES records with a practice address in San Juan, and 4,170 general practice physician records in Puerto Rico.
All 4,170 in Puerto Rico → Every provider in San Juan → General Practice Physician nationwide →
The 8 general practice physician records with the nearest ZIP codes
- Jorge Cabrera-CaraballoSanturce, PR 009071689669004
- Ivan Cerezo De La Rosa, MDSan Juan, PR 009071245290956
- Jose De Jesus, MD, ODSan Juan, PR 009071114948874
- Rafael Hernandez, MDSanturce, PR 009071851319636
- Norma Llaguno, M.D.Santurse, PR 009071215925730
- Rosa Lopez, M.D.San Juan, PR 009071124068820
- Victor Montanez, M.D.San Juan, PR 009071316902299
- Sylvia Nunez FidalgoSan Juan, PR 009071366487597
Common questions
What is Alfredo Ayala Marrero, MD's NPI number?
Alfredo Ayala Marrero, MD's National Provider Identifier (NPI) is 1881658284, issued on Apr 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Alfredo Ayala Marrero, MD located?
The NPPES record lists a practice address at Avenida DE Diego 150, San Juan, PR, 00907. Phone: (787) 230-7557. Providers update this record themselves, so call before visiting.
How can I verify Alfredo Ayala Marrero, MD's license?
NPPES lists Puerto Rico license number 7230, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Alfredo Ayala Marrero, MD prescribe under Medicare Part D?
In 2024, Alfredo Ayala Marrero, MD had 84 Medicare Part D claims for 14 beneficiaries; the average among general practice physician prescribers was 3,030. 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.