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

Margarita Gianniosis

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1356802466

Margarita Gianniosis is registered under Pulmonary Disease in Dover, Delaware. Qualified in 2019, 7 years ago. Practices with Hospitalist Medicine Physicians of Delaware, PA, a 33-clinician group and accepts Medicare assignment. Licensed in Delaware.

Years since qualifying
7
Licensed in
DE
In the registry since
2019
Specialties on file
2

Practice location Address checks out

640 S State St
Dover, DE 19901-3530
Phone: (302) 674-4700
Show map & directions

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

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence C1-0027596 (DE)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence C1-0027596 (DE)

Record details

NPI number1356802466
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorYes
NPI enumeratedMarch 29, 2019
Last updated in NPPESJuly 28, 2025
Certification dateJuly 28, 2025

Medicare enrollment

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

Medicare specialtyPULMONARY DISEASE
Medical schoolOTHER
Graduated 2019 (7 years in practice)
Group practice Hospitalist Medicine Physicians Of Delaware, Pa — 33 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 $2,500 1 payment · educational material or training, not a fee
Food and Beverage $89 4 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.

Colleagues at Hospitalist Medicine Physicians of Delaware, PA

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 33 clinicians in the practice; 6 are shown here.

Other providers in Dover