Individual Healthcare Provider
Nathan Michael Markwart, D.O.
Provider's NPPES record last updated: September 3, 2015
Overview
- Entity Type
- Individual Healthcare Provider
- NPI
- 1265774574
- Primary Specialty
- Internal Medicine — Critical Care Medicine
- Practice Location
- Boca Raton, Florida
- Sole Proprietor
- No
Federal Screening
NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.
List of Excluded Individuals/Entities (LEIE)
HHS Office of Inspector General
No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.
- Source data
- September 10, 2026
- Records indexed
- 84,001
- Screened
- Sep 20, 2026, 6:45 PM UTC
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
SAM.gov Exclusions
U.S. General Services Administration
SAM.gov Exclusions was not checked.
SAM.gov screening is not configured on this deployment. No SAM check has been performed.
- Screened
- Not checked
This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
Searches OIG LEIE and SAM.gov by name and reviews every potential match.
Specialties & Taxonomies
- Primary
Internal Medicine
Critical Care Medicine
Allopathic & Osteopathic Physicians
An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
Taxonomy code 207RC0200X
Provider-Reported License Information
- Internal Medicine (Florida)
- OS 13310
Practice Locations
Practice Location
1601 Clint Moore Rd
Suite 100
Boca Raton, Florida 33487-2768
Phone: (561) 939-0200
Record Information
- Enumeration Date
- March 25, 2013
- Provider's NPPES Record Last Updated
- September 3, 2015
- NPISignal NPPES Dataset
- August 2026
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