Hardeep M. Singh, M.D.

NPI 1275544074ActiveIndividual· Internal Medicine, Gastroenterology· Orange, CA

Internal Medicine, Gastroenterology (M.D.) in Orange, California, trained at University of Southern California Keck School of Medicine (class of 2001). 1,064 Medicare patients in 2024, $378,703 paid; nearly all of their 1,261 Part D prescriptions were generic (91%). Abbvie Inc. was the largest of 19 companies reporting payments in 2025, $2,795 in all, mostly food and beverage.

Overview

NPI	1275544074
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	No
NPI issued	Aug 10, 2006
Last updated in NPPES	Mar 7, 2023

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Gastroenterology Primary	207RG0100X	A80998	CA

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 - Gastroenterology (CA)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	1,064
Services billed	4,910 across 62 procedure codes
Paid by Medicare	$378,703

Part D prescriptions in 2024

Prescriptions (claims)	1,261 · 2,130 30-day fills
Patients	641
Total drug cost	$192,826
Generic share	91% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of Southern California Keck School of Medicine
Graduation year	2001
Medicare specialty	Gastroenterology
Secondary specialties	Internal Medicine
Telehealth	Offers telehealth