Nielsen Quimaira Fernandez-Becker, M.D., PH.D.

NPI 1972678639ActiveIndividual· Internal Medicine, Gastroenterology· Palo Alto, CA

Internal Medicine, Gastroenterology (M.D., PH.D.) in Palo Alto, California, trained at Albert Einstein College of Medicine of Yeshiva University (class of 2002). Their prescriptions cost Medicare Part D more than their services did: $211,183 for 432 claims, against $61,378 paid for services in 2024. Boston Scientific Corporation was the largest of 2 companies reporting payments in 2025, $72.14 in all, mostly food and beverage.

Overview

NPI	1972678639
Status	Active
Entity type	Individual
Credential	M.D., PH.D.
Sole proprietor	No
NPI issued	Nov 21, 2006
Last updated in NPPES	Apr 29, 2024
Certified by provider	Apr 29, 2024

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Gastroenterology Primary	207RG0100X	A109586	CA

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 (CA)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	331
Services billed	619 across 38 procedure codes
Paid by Medicare	$61,378

Part D prescriptions in 2024

Prescriptions (claims)	432 · 709 30-day fills
Patients	146
Total drug cost	$211,183
Generic share	67% of claims

Medicare sources and data years

Education and affiliations

Medical school	Albert Einstein College of Medicine of Yeshiva University
Graduation year	2002
Medicare specialty	Internal Medicine
Secondary specialties	Gastroenterology
Telehealth	Offers telehealth