What is Yumiko Ishizawa's specialty?

Yumiko Ishizawa (NPI 1679555965) is a Medicare-billing provider whose primary specialty is Anesthesiology in Boston, MA.

Where does Yumiko Ishizawa practice?

Yumiko Ishizawa practices in Boston, MA, based on the location reported in the CMS Medicare provider datasets for NPI 1679555965.

How much does Medicare pay Yumiko Ishizawa?

Yumiko Ishizawa (NPI 1679555965) received approximately $11K in total Medicare Part B payments, serving 41 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1679555965

Yumiko IshizawaMD PHD MPH

AnesthesiologyBoston, MAI

MEDICARE UTILIZATION · PART B · 2024

No data available for this provider in 2024.

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Yumiko Ishizawa's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 3 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
THE GENERAL HOSPITAL CORPORATION	116	306
Chia-Sui Kao Pathology · Stanford, CA	13	16
Esther Oliva Pathology · Boston, MA	12	13

Refers patients to

Outbound — where patients go next

No outbound pairs above the suppression threshold.

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events