Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Apostolos Tassiopoulos, MD

Individual provider Vascular Surgery Physician · NPI 1073555884

Dr. Apostolos Tassiopoulos, MD practises Vascular Surgery in Stony Brook, New York. Qualified in 1989, 37 years ago. Practices with Stony Brook Surgical Associates University Faculty Practice Corporati, a 102-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
37
Licensed in
NY
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

University Hospital L5
Stony Brook, NY 11794-0001 Not confirmed with CMS for 18 years — call before visiting
Phone: (631) 444-2565
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Vascular Surgery Physician (primary) Taxonomy 2086S0129X · Licence 002580 (NY)

Record details

NPI number1073555884
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 13, 2006
Last updated in NPPESMarch 20, 2008

Medicare enrollment

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

Medicare specialtyVASCULAR SURGERY
Medical schoolOTHER
Graduated 1989 (37 years in practice)
Group practice Stony Brook Surgical Associates University Faculty Practice Corporati — 102 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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.

Varicose vein removal 19 times · 56th percentile
Leg revascularization (restoring blood flow) 1–10 times
Removal of tissue 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 patients1,916
Services billed 3,191 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

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.

Compensation for services other than consulting , including serving as faculty or as a speaker at a venue other than a continuing education program $32,598 6 payments
Travel and Lodging $11,353 19 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $3,800 70 payments · a meal or drink at a meeting or visit, not a fee
Consulting Fee $3,625 2 payments

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 Stony Brook Surgical Associates University Faculty Practice Corporati

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 102 clinicians in the practice; 12 are shown here.

Other providers in Stony Brook