NPPES file of Aug 9, 2026

Mariano S. Lacayo, M.D.

Internal Medicine Physician · Hialeah, FL

Mariano S. Lacayo, M.D. is an internal medicine physician with a practice address in Hialeah, Florida, and NPI 1164463691, issued on Jun 8, 2006. Check the license (Florida ME89783, 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 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1164463691
Name
Mariano S. Lacayo
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
ME89783 FL
Self-reported in NPPES; status is on the state search
Practice location
975 W 49TH St, Hialeah, FL 33012
Phone
(786) 281-5358
Enumerated
Jun 8, 2006
Record last updated
Feb 25, 2026
Medicare enrollment
Enrolled (PECOS I20040713000162); accepts Medicare assignment
Medical or professional school
University Of Miami, Lm Miller School Of Medicine, 2000
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 internal medicine physician records → All 10,151 in Florida → Look up another NPI →

Also registered at 975 W 49TH St

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

  1. Fidel Cintas, MDFamily Medicine Physician1477725927
  2. Ernesto Cuna, MDGeneral Practice Physician1992106124
  3. Luis CuzaFamily Nurse Practitioner1093299950
  4. Julio Lopez Andujar, MDInternal Medicine Physician1104921568
  5. Gretel Morera, PHARMDPharmacist1821134974
  6. Rafael Palmerola, MDFamily Medicine Physician1457336877

Verify Mariano S. Lacayo in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersFlorida health license search
    Search for license ME89783    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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5.1 times the Medicare Part D claims of the average internal medicine physician in 2024

16,200 Medicare Part D claims for 642 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.

  1. Mariano Lacayo16,200
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium1,135 claims
  2. Losartan Potassium864 claims
  3. Famotidine591 claims
  4. Metoprolol Succinate573 claims
  5. Lisinopril431 claims
  6. Levothyroxine Sodium406 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: $17.91

1 payment: food and beverage; the largest payer was GlaxoSmithKline, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mariano Lacayo$17.91
  2. Specialty average$1,303.06

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

Bills Medicare through one group practice

  1. Conviva Medical Center Management, LLCHialeah, FL

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

Mariano S. Lacayo among 10,151 internal medicine physician records in Florida

Mariano S. Lacayo, M.D. is one of 10,151 internal medicine physician records with a practice address in Florida. 84% 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 10% of them.

  • NPI issued2006 · 10% of these records are older, 55% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileYes · 65% of these records are
  • Graduated2000 · median 2004 among the 6,606 with a school on file
  • Record last updated2026 · 48% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

139 internal medicine physician records list a practice address in Hialeah

They are 139 of the 10,443 NPPES records with a practice address in Hialeah, and 10,151 internal medicine physician records in Florida.

All 10,151 in Florida → Every provider in Hialeah → Internal Medicine Physician nationwide →

The 8 internal medicine physician records with the nearest ZIP codes

  1. Juan Abreu, MDHialeah, FL 330121043269863
  2. Francisco Bautista, MDHialeah, FL 330121891742169
  3. Luis De Jongh, MDHialeah, FL 330121407823925
  4. Berta Diaz-Albet, MDHialeah, FL 330121407800063
  5. Jose Garcia Napoles, MDHialeah, FL 330121952394942
  6. Alexis Guerra, MDHialeah, FL 330121578537817
  7. Scott Halperin, M.D.Hialeah, FL 330121972546612
  8. Humberto Hernandez, M.D.Hialeah, FL 330121689647869

Common questions

What is Mariano S. Lacayo, M.D.'s NPI number?

Mariano S. Lacayo, M.D.'s National Provider Identifier (NPI) is 1164463691, issued on Jun 8, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mariano S. Lacayo, M.D. located?

The NPPES record lists a practice address at 975 W 49TH St, Hialeah, FL, 33012. Phone: (786) 281-5358. Providers update this record themselves, so call before visiting.

How can I verify Mariano S. Lacayo, M.D.'s license?

NPPES lists Florida license number ME89783, 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.

How much does Mariano S. Lacayo, M.D. prescribe under Medicare Part D?

In 2024, Mariano S. Lacayo, M.D. had 16,200 Medicare Part D claims for 642 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.