Grace Koo, M.D.

NPI 1255788659ActiveIndividual· Allergy & Immunology· Nashville, TN

Allergy & Immunology (M.D.) in Nashville, Tennessee, trained at University of Maryland School of Medicine (class of 2016). Their prescriptions cost Medicare Part D more than their services did: $117,644 for 79 claims, against $7,605 paid for services in 2024. Blueprint Medicines Corporation reported $2,480 in payments in 2025, mostly honoraria.

Overview

NPI	1255788659
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	Yes
NPI issued	May 16, 2016
Last updated in NPPES	Jan 10, 2024
Certified by provider	Jan 10, 2024

Specialties and licenses

Taxonomy	Code	License	State
Allergy & Immunology Primary	207K00000X	65411	TN
Internal Medicine	207R00000X	036148471	IL
Internal Medicine, Allergy & Immunology	207RA0201X	036148471	IL
Hospitalist	208M00000X	036148471	IL
Internal Medicine	207R00000X	65411	TN

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 - Internal Medicine (TN)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	59
Services billed	732 across 20 procedure codes
Paid by Medicare	$7,605

Part D prescriptions in 2024

Prescriptions (claims)	79 · 117 30-day fills
Patients	26
Total drug cost	$117,644
Generic share	59% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of Maryland School of Medicine
Graduation year	2016
Medicare specialty	Internal Medicine
Secondary specialties	Allergy/Immunology
Telehealth	Offers telehealth