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Michael R. Block, MD

NPI 1134203656ActiveIndividual· Internal Medicine· Los Angeles, CA

Internal Medicine (MD) in Los Angeles, California, trained at University of California, San Francisco School of Medicine (class of 1971). Their prescriptions cost Medicare Part D more than their services did: $481,080 for 7,746 claims, against $57,149 paid for services in 2024.

Overview

NPI1134203656
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorYes
NPI issuedOct 24, 2006
Last updated in NPPESApr 25, 2025

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine Primary207R00000XG24174CA
Internal Medicine, Nephrology207RN0300XG24174CA

About license numbers in NPPES

Exclusion screening

ListResultDetails
HHS-OIG LEIE · Nov 10, 2026No matchChecked by NPI and by name + state
North Carolina Medicaid · Nov 11, 2026No match—
New York OMIG · Nov 11, 2026No match—
Ohio Medicaid · Nov 11, 2026No match—
Pennsylvania Medicheck · Nov 11, 2026No match—
Washington HCA · Nov 11, 2026No match—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)Enrolled Practitioner - Internal Medicine (CA)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients109
Services billed895 across 19 procedure codes
Paid by Medicare$57,149

Part D prescriptions in 2024

Prescriptions (claims)7,746 · 16,372 30-day fills
Patients428
Total drug cost$481,080
Generic share88% of claims

Medicare sources and data years

Education and affiliations

Medical schoolUniversity of California, San Francisco School of Medicine
Graduation year1971
Medicare specialtyInternal Medicine
Secondary specialtiesNephrology
TelehealthOffers telehealth

Other facilities

Source: CMS Care Compare

Industry payments (Open Payments)

None reported for 2025 or 2024.

Receiving payments does not imply wrongdoing. What Open Payments covers ·original records

Other internal medicine physicians in Los Angeles

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