NPPES file of Aug 9, 2026

Gretel Valdes Alfonso, MSN

Family Nurse Practitioner · Miami, FL

Gretel Valdes Alfonso, MSN is a family nurse practitioner with a practice address in Miami, Florida, and NPI 1619770336, issued on Mar 28, 2025. Check the license (Florida 11038505, as entered in NPPES) on the Florida health license search; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1619770336
Name
Gretel Valdes Alfonso
Credential
MSN
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
11038505 FL
Self-reported in NPPES; status is on the state search
Practice location
8145 NW 7TH St Apt 404, Miami, FL 33126
Phone
(786) 217-7970
Enumerated
Mar 28, 2025
Record last updated
Mar 28, 2025
Medicare enrollment
Enrolled (PECOS I20250602001367); 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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8 nearest family nurse practitioner records → All 22,340 in Florida → Look up another NPI →

Verify Gretel Valdes Alfonso in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersFlorida health license search
    Search for license 11038505    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
Open the Florida license search

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Bills Medicare through one group practice

  1. Vitalmd Group Holding LLCMiramar, FL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Gretel Valdes Alfonso among 22,340 family nurse practitioner records in Florida

Gretel Valdes Alfonso, MSN is one of 22,340 family nurse practitioner records with a practice address in Florida. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2025, is newer than 87% of them.

  • NPI issued2025 · 87% of these records are older, 4% newer
  • In a Medicare fileYes · 69% of these records are
  • In the CMS Doctors and Clinicians fileYes · 48% of these records are
  • Graduated2024 · median 2020 among the 10,790 with a school on file
  • Record last updated2025 · 34% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

2,787 family nurse practitioner records list a practice address in Miami

They are 2,787 of the 49,442 NPPES records with a practice address in Miami, and 22,340 family nurse practitioner records in Florida.

All 22,340 in Florida → Every provider in Miami → Family Nurse Practitioner nationwide →

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Marcos Castellanos, MSN, NP-BC, FNP-BCMiami, FL 331261942755772
  2. Geidy ColinaMiami, FL 331261992163794
  3. Liset De La Torre Aleman, ARNPMiami, FL 331261063888238
  4. Sandra Fuentefria, ARNPMiami, FL 331261841698511
  5. Melanie Giegel, FNPMiami, FL 331261316366008
  6. Donna Howard, APRNDoral, FL 331261245421478
  7. Iris Jackson, ARNPDoral, FL 331261518053313
  8. Alvaro Mejia, ARNPDoral, FL 331261508152422

Common questions

What is Gretel Valdes Alfonso, MSN's NPI number?

Gretel Valdes Alfonso, MSN's National Provider Identifier (NPI) is 1619770336, issued on Mar 28, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Gretel Valdes Alfonso, MSN located?

The NPPES record lists a practice address at 8145 NW 7TH St Apt 404, Miami, FL, 33126. Phone: (786) 217-7970. Providers update this record themselves, so call before visiting.

How can I verify Gretel Valdes Alfonso, MSN's license?

NPPES lists Florida license number 11038505, as entered by the provider. Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

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.