Risa M. Nielsen, MD

NPI 1083621742ActiveIndividual· Internal Medicine· St Croix, VI

Internal Medicine (MD) in St Croix, U.S. Virgin Islands, trained at Harvard Medical School (class of 1997). Their prescriptions cost Medicare Part D more than their services did: $459,290 for 4,405 claims, against $71,033 paid for services in 2024.

Overview

NPI	1083621742
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	Yes
NPI issued	Aug 2, 2006
Last updated in NPPES	Feb 6, 2022
Certified by provider	Feb 6, 2022

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine Primary	207R00000X	1251	VI

About license numbers in NPPES

Exclusion screening

List	Result	Details
HHS-OIG LEIE · Oct 9, 2026	No match	Checked by NPI and by name + state
North Carolina Medicaid · Nov 10, 2026	No match	—
New York OMIG · Nov 10, 2026	No match	—
Ohio Medicaid · Nov 10, 2026	No match	—
Pennsylvania Medicheck · Nov 10, 2026	No match	—
Washington HCA · Nov 10, 2026	No match	—

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

Medicare

Enrollment (PECOS)	Enrolled Practitioner - Internal Medicine (VI)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	237
Services billed	1,077 across 27 procedure codes
Paid by Medicare	$71,033

Part D prescriptions in 2024

Prescriptions (claims)	4,405 · 7,694 30-day fills
Patients	344
Total drug cost	$459,290
Generic share	86% of claims

Medicare sources and data years

Education and affiliations

Medical school	Harvard Medical School
Graduation year	1997
Medicare specialty	Internal Medicine
Telehealth	Offers telehealth

Hospital affiliation

Gov Juan F Luis Hospital & Medical CtrSt Croix, VI

Source: CMS Care Compare

Industry payments (Open Payments)

None reported for 2025 or 2024.

Receiving payments does not imply wrongdoing. What Open Payments covers ·original records