Mark S. Segal, MD

NPI 1477574085ActiveIndividual· Internal Medicine, Nephrology· Gainesville, FL

Internal Medicine, Nephrology (MD) in Gainesville, Florida, trained at University of Texas Southwestern Medical School at Dallas (class of 1992). Their prescriptions cost Medicare Part D more than their services did: $295,642 for 987 claims, against $9,589 paid for services in 2024. Kite Pharma, Inc. reported $15.46 in payments in 2025, mostly food and beverage.

Overview

NPI	1477574085
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Jul 21, 2006
Last updated in NPPES	Sep 17, 2010

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Nephrology Primary	207RN0300X	ME79739	FL

About license numbers in NPPES

Exclusion screening

List	Result	Details
HHS-OIG LEIE · Nov 10, 2026	No match	Checked by NPI and by name + state
North Carolina Medicaid · Nov 11, 2026	No match	—
New York OMIG · Nov 11, 2026	No match	—
Ohio Medicaid · Nov 11, 2026	No match	—
Pennsylvania Medicheck · Nov 11, 2026	No match	—
Washington HCA · Nov 11, 2026	No match	—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)	Enrolled Practitioner - Nephrology (FL)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	50
Services billed	152 across 13 procedure codes
Paid by Medicare	$9,589

Part D prescriptions in 2024

Prescriptions (claims)	987 · 2,090 30-day fills
Patients	74
Total drug cost	$295,642
Generic share	92% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of Texas Southwestern Medical School at Dallas
Graduation year	1992
Medicare specialty	Nephrology
Secondary specialties	Internal Medicine