Quick answers
- Which hospitals does Frank Mazzola work at?
- Medicare's official clinician data lists Frank Mazzola at 3 hospitals: Harlingen Medical Center, Knapp Medical Center and VHS Harlingen Hospital Company LLC. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Frank Mazzola see patients?
- Medicare's clinician data lists 1 practice location in Harlingen, TX. Call before your visit to confirm the address.
- What is Frank Mazzola's specialty?
- Medicare lists Cardiac Electrophysiology as the primary specialty, and also Cardiovascular Disease (Cardiology) and Internal Medicine.
- Does Frank Mazzola accept Medicare assignment?
- Yes. Medicare's clinician data says Frank Mazzola 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 Frank Mazzola's NPI number?
- 1558323915. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Frank Mazzola works
Medicare's Facility Affiliation Data lists Frank Mazzola at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Harlingen Medical CenterHarlingen, TX · Acute Care Hospital · CCN 450855
- Knapp Medical CenterWeslaco, TX · Acute Care Hospital · CCN 450128
- VHS Harlingen Hospital Company LLCHarlingen, TX · Acute Care Hospital · CCN 450033
Practice locations
Addresses where Frank Mazzola is enrolled with Medicare (CMS data updated 2026-10-02).
- 2310 N Ed Carey Dr, Suite 1aHarlingen, TX 78550
Group practices
Medicare enrollment lists Frank Mazzola as a member of this group (CMS data updated 2026-10-02).
- South Heart Clinic, PLLC14 clinicians in the group
Specialties
Other cardiac electrophysiologists in Texas
Clinicians with the same Medicare primary specialty in Texas — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Connecticut School Of Medicine |
| Graduation year | 1987 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1558323915 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians