Quick answers
- Does Brett A. Mastromatteo accept Medicare assignment?
- Yes. Medicare's clinician data says Brett A. Mastromatteo accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Brett A. Mastromatteo see?
- In 2024, CMS data shows 222 Original Medicare patients and 330 services for Brett A. Mastromatteo. This counts Original Medicare only and measures volume, not quality.
- What is Brett A. Mastromatteo's NPI number?
- 1619487857. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Brett A. Mastromatteo, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 222 |
|---|---|
| Services billed to Medicare | 330 |
| Different services or procedures | 6 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)236 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)50 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)30 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis55%
- Diabetes32%
- Ischemic heart disease30%
- Anxiety30%
Hospitals where Brett A. Mastromatteo works
Medicare's Facility Affiliation Data lists Brett A. Mastromatteo at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Good Samaritan Medical CenterWest Palm Beach, FL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 100287
- Jupiter Medical CenterJupiter, FL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 100253
- Palm Beach Gardens Medical CenterPalm Beach Gardens, FL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 100176
Practice locations
Addresses where Brett A. Mastromatteo is enrolled with Medicare (CMS data updated October 2, 2026).
- 1117 N Olive Ave, Suite 203West Palm Beach, FL 33401 (561) 802‑9050
- 3375 Burns Rd, Suite 109Palm Beach Gardens, FL 33410 (561) 802‑9050
Group practices
Medicare enrollment lists Brett A. Mastromatteo as a member of this group (CMS data updated October 2, 2026).
- Gastro Health, LLC247 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in West Palm Beach
Clinicians with the same Medicare primary specialty in West Palm Beach, FL — not a recommendation.
Other clinicians in Gastro Health, LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2017 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1619487857 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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