Quick answers
- Does Zachary J. Trzaska accept Medicare assignment?
- Yes. Medicare's clinician data says Zachary J. Trzaska 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 Zachary J. Trzaska see?
- In 2024, CMS data shows 1,579 Original Medicare patients and 3,910 services for Zachary J. Trzaska. This counts Original Medicare only and measures volume, not quality.
- What is Zachary J. Trzaska's NPI number?
- 1053510768. 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 Zachary J. Trzaska, 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 | 1,579 |
|---|---|
| Services billed to Medicare | 3,910 |
| Different services or procedures | 32 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)2,189 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)516 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)222 services
- Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician (93016)140 services
- Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician (93018)140 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 cholesterol69%
- Arthritis45%
- Ischemic heart disease38%
- Atrial fibrillation38%
- Diabetes30%
Hospitals where Zachary J. Trzaska works
Medicare's Facility Affiliation Data lists Zachary J. Trzaska 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.
- Down East Community HospitalMachias, ME · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 201311
- Mount Desert Island HospitalBar Harbor, ME · Critical Access Hospital · Emergency services: listed by Medicare · CCN 201304
- Northern Light Blue Hill Memorial HospitalBlue Hill, ME · Critical Access Hospital · Emergency services: listed by Medicare · CCN 201300
- Northern Light Eastern Maine Medical CenterBangor, ME · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 200033
- Northern Light Maine Coast HospitalEllsworth, ME · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 200050
Practice locations
Addresses where Zachary J. Trzaska is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 8; the Medicare profile lists all.
- 10 Wayman LnBar Harbor, ME 04609 (207) 288‑5081
- 306 Main StEllsworth, ME 04605 (207) 664‑5566
- 318 Main StEllsworth, ME 04605 (207) 667‑2523
- 32 Resort WayEllsworth, ME 04605
- 37 Clinic RdGouldsboro, ME 04607 (207) 963‑4066
Group practices
Medicare enrollment lists Zachary J. Trzaska as a member of these groups (CMS data updated October 2, 2026).
- Maine Coast Regional Health Facilities66 clinicians in the group
- Mount Desert Island Hospital65 clinicians in the group
- The Blue Hill Memorial Hospital10 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Maine →
Other cardiologists in Maine
Clinicians with the same Medicare primary specialty in Maine — not a recommendation.
Other clinicians in Maine Coast Regional Health Facilities
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2007 (19 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1053510768 |
| 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