Quick answers
- Does Zacharia J. Matar accept Medicare assignment?
- Yes. Medicare's clinician data says Zacharia J. Matar 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 Zacharia J. Matar see?
- In 2024, CMS data shows 141 Original Medicare patients and 207 services for Zacharia J. Matar. This counts Original Medicare only and measures volume, not quality.
- What is Zacharia J. Matar's NPI number?
- 1740988328. 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 Zacharia J. Matar, 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 | 141 |
|---|---|
| Services billed to Medicare | 207 |
| Different services or procedures | 11 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)111 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)40 services
- Hospital discharge day management, more than 30 minutes (99239)28 services
- Critical care, first 30-74 minutes (99291)18 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%
- Chronic kidney disease57%
- Heart failure56%
- Anxiety54%
- Arthritis53%
Hospitals where Zacharia J. Matar works
Medicare's Facility Affiliation Data lists Zacharia J. Matar 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.
- Holy Family HospitalMethuen, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220080
- Merrimack Health Lawrence HospitalLawrence, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220010
Practice locations
Addresses where Zacharia J. Matar is enrolled with Medicare (CMS data updated October 2, 2026).
- 1 General StLawrence, MA 01841
- 140 Lincoln AveHaverhill, MA 01830 (978) 374‑2000
- 70 E StMethuen, MA 01844 (978) 687‑0151
Group practices
Medicare enrollment lists Zacharia J. Matar as a member of these groups (CMS data updated October 2, 2026).
- Community Medical Associates, Inc.157 clinicians in the group
- Lawrence General Hospital123 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Lawrence
Clinicians with the same Medicare primary specialty in Lawrence, MA — not a recommendation.
Other clinicians in Community Medical Associates, Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2023 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1740988328 |
| 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