Melissa E. Weinberg, M.D.

NPI 1659399079ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· San Francisco, CA

Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) in San Francisco, California, trained at Yale University School of Medicine (class of 2001). Their prescriptions cost Medicare Part D more than their services did: $962,190 for 2,002 claims, against $58,927 paid for services in 2024. Dexcom, Inc. reported $20.52 in payments in 2024, mostly food and beverage.

Overview

NPI	1659399079
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	No
NPI issued	Jul 17, 2006
Last updated in NPPES	Mar 7, 2023

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Endocrinology, Diabetes & Metabolism Primary	207RE0101X	A89190	CA
Internal Medicine, Endocrinology, Diabetes & Metabolism	207RE0101X	219322	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 - Internal Medicine (CA)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	230
Services billed	1,010 across 16 procedure codes
Paid by Medicare	$58,927

Part D prescriptions in 2024

Prescriptions (claims)	2,002 · 4,698 30-day fills
Patients	229
Total drug cost	$962,190
Generic share	43% of claims

Medicare sources and data years

Education and affiliations

Medical school	Yale University School of Medicine
Graduation year	2001
Medicare specialty	Internal Medicine
Secondary specialties	Endocrinology
Telehealth	Offers telehealth