Martha Elizabeth Billings, M.D.

NPI 1700811619ActiveIndividual· Internal Medicine, Sleep Medicine· Seattle, WA

Internal Medicine, Sleep Medicine (M.D.) in Seattle, Washington, trained at University of California, San Francisco School of Medicine (class of 2002). Their prescriptions cost Medicare Part D more than their services did: $117,823 for 130 claims, against $15,905 paid for services in 2024. Takeda Pharmaceuticals U.S.A., Inc. was the largest of 2 companies reporting payments in 2025, $35.09 in all, mostly food and beverage.

Overview

NPI	1700811619
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	No
NPI issued	Jul 11, 2006
Last updated in NPPES	Jan 16, 2014

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Sleep Medicine Primary	207RS0012X	WA MD00046402	WA
Internal Medicine, Pulmonary Disease	207RP1001X	WA MD00046402	WA

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 - Sleep Medicine (WA)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	158
Services billed	231 across 22 procedure codes
Paid by Medicare	$15,905

Part D prescriptions in 2024

Prescriptions (claims)	130 · 188 30-day fills
Patients	25
Total drug cost	$117,823
Generic share	79% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of California, San Francisco School of Medicine
Graduation year	2002
Medicare specialty	Sleep Medicine
Secondary specialties	Pulmonary Disease
Telehealth	Offers telehealth