Jonathan Paul Singer, MD

NPI 1932122462ActiveIndividual· Internal Medicine· San Francisco, CA

Internal Medicine (MD) in San Francisco, California, trained at University of California, San Francisco School of Medicine (class of 2005). Their prescriptions cost Medicare Part D more than their services did: $213,147 for 939 claims, against $37,455 paid for services in 2024. Krystal Biotech Inc reported $687.25 in payments in 2025, mostly consulting fees.

Overview

NPI	1932122462
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Jul 25, 2006
Last updated in NPPES	Apr 7, 2009

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine Primary	207R00000X	A94715	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 - Pulmonary Disease (CA)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	114
Services billed	482 across 17 procedure codes
Paid by Medicare	$37,455

Part D prescriptions in 2024

Prescriptions (claims)	939 · 1,639 30-day fills
Patients	173
Total drug cost	$213,147
Generic share	93% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of California, San Francisco School of Medicine
Graduation year	2005
Medicare specialty	Pulmonary Disease
Secondary specialties	Critical Care (Intensivists), Internal Medicine
Telehealth	Offers telehealth