Efrain C. Marrero Alvira, MD
General Practice Physician · Luquillo, PR
Efrain C. Marrero Alvira, MD is a general practice physician with a practice address in Luquillo, Puerto Rico, and NPI 1447866884, issued on Sep 21, 2020. Check the license (Puerto Rico 21994, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Efrain C. Marrero Alvira
- Credential
- MD
- Primary taxonomy
- General Practice Physician 208D00000X
- License number
- 21994 PR
Self-reported in NPPES; status is on the state search - Practice location
- Urb Colinas DE Luquillo, Calle 4 - Casa 74, Luquillo, PR 00773
- Phone
- (787) 955-9181
- Enumerated
- Sep 21, 2020
- Record last updated
- Nov 9, 2020 (not updated in 6 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest general practice physician records → All 4,170 in Puerto Rico → Look up another NPI →
Verify Efrain C. Marrero Alvira 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 21994Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average general practice physician in 2024
328 Medicare Part D claims for 215 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D.
Most prescribed
- Dexamethasone31 claims
- Naproxen28 claims
- Amoxicillin26 claims
- Ketorolac Tromethamine23 claims
- Metronidazole19 claims
- Pantoprazole Sodium19 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.
Efrain C. Marrero Alvira among 4,170 general practice physician records in Puerto Rico
Efrain C. Marrero Alvira, 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 2020, is newer than 73% of them.
- NPI issued2020 · 73% of these records are older, 22% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 29% of these records are
- Record last updated2020 · 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).
14 general practice physician records list a practice address in Luquillo
They are 14 of the 90 NPPES records with a practice address in Luquillo, and 4,170 general practice physician records in Puerto Rico.
All 4,170 in Puerto Rico → Every provider in Luquillo → General Practice Physician nationwide →
The 8 general practice physician records with the nearest ZIP codes
- Carlos Alfaro Iberico, M.D.Luquillo, PR 007731770868713
- Jose Barreras, MDLuquillo, PR 007731205051364
- Ivonne Benabe HuertasLuquillo, PR 007731083837025
- Rosamar Caraballo Lopez, MDLuquillo, PR 007731538329164
- Kareen Cardona-Vicente, M.D.Luquillo, PR 007731922212521
- Evelyn Cortes, M.D.Luquillo, PR 007731376753012
- Ivelisse Febres Cabrera, MDLuquillo, PR 007731295069730
- Miguel Goyechea Pabon, M.D.Luiquillo, PR 007731194260075
Common questions
What is Efrain C. Marrero Alvira, MD's NPI number?
Efrain C. Marrero Alvira, MD's National Provider Identifier (NPI) is 1447866884, issued on Sep 21, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Efrain C. Marrero Alvira, MD located?
The NPPES record lists a practice address at Urb Colinas DE Luquillo, Calle 4 - Casa 74, Luquillo, PR, 00773. Phone: (787) 955-9181. Providers update this record themselves, so call before visiting.
How can I verify Efrain C. Marrero Alvira, MD's license?
NPPES lists Puerto Rico license number 21994, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Efrain C. Marrero Alvira, MD prescribe under Medicare Part D?
In 2024, Efrain C. Marrero Alvira, MD had 328 Medicare Part D claims for 215 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.