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

Dr. Marc Patrick Underhill, MD

Individual provider Diagnostic Radiology Physician · NPI 1619188661

Dr. Marc Patrick Underhill, MD practises Diagnostic Radiology in Orlando, Florida. Graduated from Indiana University School of Medicine in 2005, 21 years ago. Practices with Orlando Health Medical Group Inc, a 2,137-clinician group and accepts Medicare assignment. Licensed in Florida and Indiana.

Years since qualifying
21
Trained at
Indiana University School of Medicine
Licensed in
FL, IN
In the registry since
2007
Specialties on file
2
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

52 W Underwood St
Orlando, FL 32806-1110
Phone: (321) 842-8475
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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 ME143305 (FL)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 01069066A (IN)

Record details

NPI number1619188661
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 24, 2007
Last updated in NPPESMarch 28, 2023
Certification dateMarch 28, 2023

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Also practisesINTERVENTIONAL RADIOLOGY
Medical schoolINDIANA UNIVERSITY SCHOOL OF MEDICINE
Graduated 2005 (21 years in practice)
Group practice Orlando Health Medical Group Inc — 2137 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 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 patients1,947
Services billed 12,698 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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 $335 3 payments · a meal or drink at a meeting or visit, not a fee
Travel and Lodging $129 1 payment · 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. Those with a page here are linked.

  • Orlando Health Hospital · Orlando, FL
  • Orlando Health Melbourne Hospital Hospital · Melbourne, FL · listed as Ohmh, LLC
  • Orlando Health Bayfront Hospital Hospital · Saint Petersburg, FL
  • Orlando Health Sebastian River Hospital Hospital · Sebastian, FL
  • Orlando Health South Lake Hospital Hospital · Clermont, FL

Colleagues at Orlando Health Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2137 clinicians in the practice; 12 are shown here.

Other providers in Orlando