NPPES file of Aug 9, 2026

Gregorio A. Cortes-Maisonet, MD

General Practice Physician · San Juan, PR

Gregorio A. Cortes-Maisonet, MD is a general practice physician with a practice address in San Juan, Puerto Rico, and NPI 1639151616, issued on Nov 16, 2005. Check the license (Puerto Rico 16033, 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
1639151616
Name
Gregorio A. Cortes-Maisonet
Credential
MD
Primary taxonomy
General Practice Physician 208D00000X
License number
16033 PR
Self-reported in NPPES; status is on the state search
Practice location
1826 Ave Fernandez Juncos, San Juan, PR 00909
Phone
(787) 726-8396
Enumerated
Nov 16, 2005
Record last updated
Jul 10, 2024
Fax
(787) 919-0640
Medicare enrollment
Enrolled (PECOS I20051128000043); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1826 Ave Fernandez Juncos

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Gregorio Cortes-Soto, M.D.Internal Medicine Physician1003858994
  2. Charles CuffSurgery Physician1508835554
  3. Nancy Lemos-Ramirez, PHDPsychologist1205248663
  4. Didier Rosado-Collazo, MDGeneral Practice Physician1144870031

Verify Gregorio A. Cortes-Maisonet 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 16033
    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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44% fewer Medicare Part D claims than the average general practice physician in 2024

1,689 Medicare Part D claims for 102 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.

  1. Gregorio Cortes-Maisonet1,689
  2. Specialty average3,030

Most prescribed

  1. Atorvastatin Calcium83 claims
  2. Losartan Potassium71 claims
  3. Metformin Hcl68 claims
  4. Levothyroxine Sodium50 claims
  5. Amlodipine Besylate49 claims
  6. Synthroid44 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: $1,039.03

11 payments; by number, the most common kind was travel and lodging; the largest payer was Eli Lilly and Company. 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. Gregorio Cortes-Maisonet$1,039.03
  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.

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.

Other general practice physician records in Puerto Rico

  1. Veronica Abraham, MDBayamon, PR1881204089
  2. Manuel Abraham Gonzalez, M.D.San Juan, PR1811297534
  3. Jennifer Abraham Vega, MDSan Juan, PR1366030595
  4. Jose M. Abreu Guzman, M.D.Manati, PR1982745816
  5. Steven Abreu Reyes, M.D.Las Piedras, PR1801146667
  6. Caren Abreu Takemura, MDCarolina, PR1669110805
  7. Ibrahim Abu-Usbaabdel-FattahAibonito, PR1285851758
  8. Nidal Abukhalil Rashid, MDHatillo, PR1760435226
  9. Adrian Acevedo, M.D.Santa Isabel, PR1518173624
  10. Angel Acevedo, MDSan Juan, PR1689663817

Common questions

What is Gregorio A. Cortes-Maisonet, MD's NPI number?

Gregorio A. Cortes-Maisonet, MD's National Provider Identifier (NPI) is 1639151616, issued on Nov 16, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Gregorio A. Cortes-Maisonet, MD located?

The NPPES record lists a practice address at 1826 Ave Fernandez Juncos, San Juan, PR, 00909. Phone: (787) 726-8396. Providers update this record themselves, so call before visiting.

How can I verify Gregorio A. Cortes-Maisonet, MD's license?

NPPES lists Puerto Rico license number 16033, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.

How much does Gregorio A. Cortes-Maisonet, MD prescribe under Medicare Part D?

In 2024, Gregorio A. Cortes-Maisonet, MD had 1,689 Medicare Part D claims for 102 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.