Roham Tahmaseb Zamanian, MD

NPI 1689601494ActiveIndividual· Internal Medicine, Pulmonary Disease· Stanford, CA

Internal Medicine, Pulmonary Disease (MD) in Stanford, California, trained at University of California, Irvine, California College of Medicine (class of 1999). Their prescriptions cost Medicare Part D more than their services did: $499,110 for 139 claims, against $13,385 paid for services in 2024. Merck Sharp & Dohme LLC was the largest of 2 companies reporting payments in 2025, $32,288 in all, mostly consulting fees.

Overview

NPI	1689601494
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Jun 27, 2006
Last updated in NPPES	Apr 12, 2024
Certified by provider	Apr 12, 2024

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Pulmonary Disease Primary	207RP1001X	A74771	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	63
Services billed	172 across 23 procedure codes
Paid by Medicare	$13,385

Part D prescriptions in 2024

Prescriptions (claims)	139 · 174 30-day fills
Patients	15
Total drug cost	$499,110
Generic share	78% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of California, Irvine, California College of Medicine
Graduation year	1999
Medicare specialty	Pulmonary Disease
Secondary specialties	Critical Care (Intensivists), Internal Medicine
Telehealth	Offers telehealth