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Cardiac Surgery

William Martinez, MD

Works at hospitals in Bradenton, FL · Port Charlotte, FL · Florida

Summary

William Martinez, MD (Cardiac Surgery) is listed by Medicare at 2 hospitals in Bradenton, FL and Port Charlotte, FL. NPI 1639161649. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about William Martinez, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Cardiac SurgeryPrimary specialty
YesAccepts Medicare assignment
40Years since medical school (graduated 1986)
Jefferson Medical College Of Thomas Jefferson UniversityMedical school
MaleGender (as listed)
Riverview Cardiac Surgery PAGroup practice

Quick answers

Which hospitals does William Martinez work at?
Medicare's official clinician data lists William Martinez at 2 hospitals: HCA Florida Blake Hospital and HCA Florida Fawcett Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does William Martinez see patients?
Medicare's clinician data lists 1 practice location in Port Charlotte, FL. Call before your visit to confirm the address.
What is William Martinez's specialty?
Medicare lists Cardiac Surgery as the primary specialty, and also Thoracic Surgery.
Does William Martinez accept Medicare assignment?
Yes. Medicare's clinician data says William Martinez accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for William Martinez?
(941) 744-2640, as listed in official Medicare / NPI Registry data.
What is William Martinez's NPI number?
1639161649. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where William Martinez works

Medicare's Facility Affiliation Data lists William Martinez at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where William Martinez is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists William Martinez as a member of this group (CMS data updated 2026-10-02).

  • Riverview Cardiac Surgery PA5 clinicians in the group

Specialties

Find other Cardiac Surgery doctors in Florida →

Other cardiac surgeons in Florida

Clinicians with the same Medicare primary specialty in Florida — not a recommendation.

All cardiac surgeons in Florida →

Clinician information

CredentialMD
Medical schoolJefferson Medical College Of Thomas Jefferson University
Graduation year1986
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1639161649
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians