John L. Niles, MD

NPI 1316912033ActiveIndividual· Internal Medicine, Nephrology· Boston, MA

Internal Medicine, Nephrology (MD) in Boston, Massachusetts, trained at Oregon Health Sciences University School of Medicine (class of 1981). In 2024 Medicare paid $968,795 for 316 patients, and Part D covered 490 of their prescriptions, 77% of them generic. Alexion Pharmaceuticals, Inc. was the largest of 4 companies reporting payments in 2025, $3,156 in all, mostly consulting fees.

Overview

NPI	1316912033
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Feb 17, 2006
Last updated in NPPES	Feb 4, 2015

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Nephrology Primary	207RN0300X	54243	MA
Internal Medicine	207R00000X	54243	MA

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 (MA)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	316
Services billed	33,397 across 43 procedure codes
Paid by Medicare	$968,795

Part D prescriptions in 2024

Prescriptions (claims)	490 · 1,172 30-day fills
Patients	94
Total drug cost	$1,214,146
Generic share	77% of claims

Medicare sources and data years

Education and affiliations

Medical school	Oregon Health Sciences University School of Medicine
Graduation year	1981
Medicare specialty	Nephrology
Secondary specialties	Internal Medicine
Telehealth	Offers telehealth