NPPES file of Aug 9, 2026

Maria Margarita Justiniano Magraner, DMD

Dentist · San Juan, PR

Maria Margarita Justiniano Magraner, DMD is a dentist with a practice address in San Juan, Puerto Rico, and NPI 1134572514, issued on Jul 20, 2016. Check the license (Puerto Rico 4852231, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1134572514
Name
Maria Margarita Justiniano Magraner
Credential
DMD
Primary taxonomy
Dentist 122300000X
License number
4852231 PR
Self-reported in NPPES; status is on the state search
Practice location
48 Ave. Munoz Rivera Cond. Aquablue Apt. 1402, San Juan, PR 00918
Phone
(939) 579-1319
Enumerated
Jul 20, 2016
Record last updated
Jan 24, 2018 (not updated in 8 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest dentist records → All 462 in Puerto Rico → Look up another NPI →

Verify Maria Margarita Justiniano Magraner in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Puerto Rico board licenses this profession
    Search for license 4852231    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Puerto Rico license search

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29% more Medicare Part D claims than the average dentist in 2024

111 Medicare Part D claims for 69 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Maria Justiniano Magraner111
  2. Specialty average86

Most prescribed

  1. Clindamycin Hcl53 claims
  2. Amoxicillin19 claims
  3. Chlorhexidine Gluconate14 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.

Maria Margarita Justiniano Magraner among 462 dentist records in Puerto Rico

Maria Margarita Justiniano Magraner, DMD is one of 462 dentist records with a practice address in Puerto Rico. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 82% of them.

  • NPI issued2016 · 82% of these records are older, 17% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2018 · 67% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

92 dentist records list a practice address in San Juan

They are 92 of the 8,960 NPPES records with a practice address in San Juan, and 462 dentist records in Puerto Rico.

All 462 in Puerto Rico → Every provider in San Juan → Dentist nationwide →

The 8 dentist records with the nearest ZIP codes

  1. Carlos Arrillaga, DDSSan Juan, PR 009181710987649
  2. Jorge Calmeron, DMDSan Juan, PR 009181861484537
  3. Sonia Colon, DMDHato Rey, PR 009181154358133
  4. Melvin Hernandez Viera, DMDSan Juan, PR 009181093740391
  5. Diego Iravedra, DMDSan Juan, PR 009181689758534
  6. Irma Lorenzi, DMDSan Juan, PR 009181093876385
  7. Carlos Martinez, DDSSan Juan, PR 009181003979311
  8. Ramon Maza Hernandez, DMDSan Juan, PR 009181336219237

Common questions

What is Maria Margarita Justiniano Magraner, DMD's NPI number?

Maria Margarita Justiniano Magraner, DMD's National Provider Identifier (NPI) is 1134572514, issued on Jul 20, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Maria Margarita Justiniano Magraner, DMD located?

The NPPES record lists a practice address at 48 Ave. Munoz Rivera Cond. Aquablue Apt. 1402, San Juan, PR, 00918. Phone: (939) 579-1319. Providers update this record themselves, so call before visiting.

How can I verify Maria Margarita Justiniano Magraner, DMD's license?

NPPES lists Puerto Rico license number 4852231, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.

How much does Maria Margarita Justiniano Magraner, DMD prescribe under Medicare Part D?

In 2024, Maria Margarita Justiniano Magraner, DMD had 111 Medicare Part D claims for 69 beneficiaries; the average among dentist prescribers was 86. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.