Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

Dr. Matthew Mackowsky

Individual provider Surgical Critical Care Physician · NPI 1104276542

Dr. Matthew Mackowsky practises General Surgery in Elizabeth, New Jersey. Graduated from Drexel University College of Medicine in 2016, 10 years ago. Practices with St Josephs Medical Group PC, a 226-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Georgia, Idaho, Indiana and New Jersey.

Years since qualifying
10
Trained at
Drexel University College of Medicine
Licensed in
GA, ID, IN, NJ
In the registry since
2016
Specialties on file
5

Practice location Address checks out

225 Williamson St
Elizabeth, NJ 07202-3625
Phone: (908) 994-5738
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 999 N Curtis Rd Ste 415, Boise, ID 83706-1334 — (208) 302-2600
  • 300 2nd Ave, Long Branch, NJ 07740-6303 — (732) 923-6769

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence 25MA11200600 (NJ)
Surgical Critical Care Physician Taxonomy 2086S0102X · Licence MC-2472 (ID)
Surgical Critical Care Physician Taxonomy 2086S0102X · Licence 01092242A (IN)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X (NJ)
Surgery Physician Taxonomy 208600000X · Licence 92472 (GA)

Record details

NPI number1104276542
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedJune 16, 2016
Last updated in NPPESJanuary 20, 2025
Certification dateJanuary 20, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGENERAL SURGERY
Medical schoolDREXEL UNIVERSITY COLLEGE OF MEDICINE
Graduated 2016 (10 years in practice)
Group practice St Josephs Medical Group Pc — 226 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Hernia repair (minimally invasive) 1–10 times
Removal of tissue 1–10 times
Upper gastrointestinal (GI) endoscopy for acid reflux 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients27
Services billed 48 a service is one billed item, such as a visit, a test or a procedure
Average patient age78

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Education $3,000 2 payments · educational material or training, not a fee
Long term medical supply or device loan $998 5 payments · a device or supply lent for a long period, not cash
Food and Beverage $550 9 payments · a meal or drink at a meeting or visit, not a fee
Travel and Lodging $401 3 payments · travel or lodging paid or reimbursed, such as to attend a conference

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at St Josephs Medical Group PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 226 clinicians in the practice; 12 are shown here.

Other providers in Elizabeth