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

Dr. John Boldog Smirniotopoulos, MD

Individual provider Vascular & Interventional Radiology Physician · NPI 1841618667

Dr. John Boldog Smirniotopoulos, MD practises Diagnostic Radiology in New York, New York. Graduated from Georgetown University School of Medicine in 2014, 12 years ago. Practices with Medstar Medical Group II LLC, a 3,717-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
12
Trained at
Georgetown University School of Medicine
Licensed in
NY
In the registry since
2014
Specialties on file
3
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

525 E 68th Street Interventional Radiology
New York, NY 10065
Phone: (202) 415-0142
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 280897 (NY)
Vascular & Interventional Radiology Physician Taxonomy 2085R0204X · Licence 280897 (NY)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1841618667
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 29, 2014
Last updated in NPPESSeptember 23, 2020
Certification dateSeptember 23, 2020

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolGEORGETOWN UNIVERSITY SCHOOL OF MEDICINE
Graduated 2014 (12 years in practice)
Group practice Medstar Medical Group Ii Llc — 3717 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 on file with Medicare

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 patients203
Services billed 519 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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 $11,488 25 payments
Honoraria $7,000 6 payments
Food and Beverage $2,149 28 payments · a meal or drink at a meeting or visit, not a fee
Travel and Lodging $746 2 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 Medstar Medical Group II LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 3717 clinicians in the practice; 12 are shown here.

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