NPPES file of Aug 9, 2026

Grace D. Medestomas, M.D.

General Practice Physician · Naguabo, PR

Grace D. Medestomas, M.D. is a general practice physician with a practice address in Naguabo, Puerto Rico, and NPI 1609814227, issued on Jun 4, 2006. Check the license (Puerto Rico 15229, 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
1609814227
Name
Grace D. Medestomas
Credential
M.D.
Primary taxonomy
General Practice Physician 208D00000X
License number
15229 PR
Self-reported in NPPES; status is on the state search
Practice location
45 Calle Garzot, Naguabo, PR 00718
Phone
(787) 266-8400
Enumerated
Jun 4, 2006
Record last updated
Dec 22, 2025
Fax
(787) 266-8386
Medicaid ID
37764301 PR
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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Verify Grace D. Medestomas 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 15229
    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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4.4 times the Medicare Part D claims of the average general practice physician in 2024

13,189 Medicare Part D claims for 434 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. 151 claims were for opioids.

  1. Grace Medestomas13,189
  2. Specialty average3,030

Most prescribed

  1. Famotidine669 claims
  2. Omeprazole529 claims
  3. Synthroid514 claims
  4. Gabapentin377 claims
  5. Atorvastatin Calcium365 claims
  6. Rosuvastatin Calcium340 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: $153.97

4 payments; by number, the most common kind was food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. The 4,259 providers of this specialty with any payment received $1,273.40 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Grace Medestomas$153.97
  2. Specialty average$1,273.40

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Grace D. Medestomas among 4,170 general practice physician records in Puerto Rico

Grace D. Medestomas, M.D. 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 fileNo · 29% of these records are
  • Record last updated2025 · 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).

13 general practice physician records list a practice address in Naguabo

They are 13 of the 99 NPPES records with a practice address in Naguabo, and 4,170 general practice physician records in Puerto Rico.

The 8 general practice physician records with the nearest ZIP codes

  1. Veronica Arroyo, MDNaguabo, PR 007181588317788
  2. Mara Astacio-Almodovar, M.D.Naguabo, PR 007181235143215
  3. Barbara Bustillo, M.D.Naguabo, PR 007181598727752
  4. Ignacio Coradin Ruiz, MDNaguabo, PR 007181881679298
  5. Luis De Jesus Lazu, M.D.Naguabo, PR 007181639120132
  6. Hector Flores Aponte, M.D.Naguabo, PR 007181083636559
  7. Rhina Grullon, MDNaguabo, PR 007181760016893
  8. Abner MercadoNaguabo, PR 007181134132350

Common questions

What is Grace D. Medestomas, M.D.'s NPI number?

Grace D. Medestomas, M.D.'s National Provider Identifier (NPI) is 1609814227, issued on Jun 4, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Grace D. Medestomas, M.D. located?

The NPPES record lists a practice address at 45 Calle Garzot, Naguabo, PR, 00718. Phone: (787) 266-8400. Providers update this record themselves, so call before visiting.

How can I verify Grace D. Medestomas, M.D.'s license?

NPPES lists Puerto Rico license number 15229, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.

How much does Grace D. Medestomas, M.D. prescribe under Medicare Part D?

In 2024, Grace D. Medestomas, M.D. had 13,189 Medicare Part D claims for 434 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.