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

Ariel Nassim

Individual provider Internal Medicine Physician · NPI 1780959866

Ariel Nassim practises Internal Medicine in Great Neck, New York. Graduated from New York College of Osteo Medicine of New York Institute of Technology in 2012, 14 years ago. Practices with Nassim Medical PC, a 2-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
14
Trained at
New York College of Osteo Medicine of New York Institute of Technology
Licensed in
NY
In the registry since
2012
Specialties on file
2
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Practice location Address checks out

1000 Northern Blvd Ste 375
Great Neck, NY 11021-5312
Phone: (516) 773-3942
Fax: (516) 734-0172
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Sports Medicine (Internal Medicine) Physician (primary) Taxonomy 207RS0010X · Licence 279137 (NY)
Internal Medicine Physician Taxonomy 207R00000X · Licence 279137 (NY)

Record details

NPI number1780959866
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMarch 21, 2012
Last updated in NPPESNovember 28, 2017

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesSPORTS MEDICINE
Medical schoolNEW YORK COLLEGE OF OSTEO MEDICINE OF NEW YORK INSTITUTE OF TECHNOLOGY
Graduated 2012 (14 years in practice)
Group practice Nassim Medical Pc — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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 patients571
Services billed 8,265 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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.

Food and Beverage $1,855 85 payments · a meal or drink at a meeting or visit, not a fee

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. Those with a page here are linked.

  • North Shore University Hospital Hospital · Manhasset, NY
  • St Francis Hospital - The Heart Center Hospital · Roslyn, NY · listed as St Francis Hospital
  • Catholic Home Care Home health agency · Farmingdale, NY
  • Emerest Home Health Care Of Long Island Home health agency · Flushing, NY
  • North Shore Home Care Chha Home health agency · Westbury, NY

Colleagues at Nassim Medical PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Great Neck