PROVIDER PROFILE · NPI 1821247065

Diana SewellM.D.

PRACTICENORWALK HOSPITALSee all providers at this practice →

Internal MedicineNorwalk, CTI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

212

Unique beneficiaries

—

Total services

403

Distinct HCPCS

Medicare payment

$31K

Peer benchmark

Total Medicare services vs. 1,650 Internal Medicine providers in CT — below median (cohort median 549).

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 · 2024

No data available for this provider in 2024.

REFERRAL NETWORK

Where Diana Sewell'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). 56 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
MICHAELSON, STEPHEN	102	460
NORWALK HOSPITAL ASSOCIATION	88	384
NORWALK HOSPITAL ASSOCIATION	87	337
Ralph Kirmser Cardiology · Norwalk, CT	78	340
Boris Sheynberg Cardiology · Westport, CT	62	215
Charles Augenbraun Cardiology · Norwalk, CT	58	325
Ronald Lee Diagnostic Radiology · Norwalk, CT	57	223
David Lomnitz Cardiology · Norwalk, CT	56	251
David Klein Diagnostic Radiology · Norwalk, CT	52	258
Heather Frimmer Diagnostic Radiology · Norwalk, CT	49	205
MAITEM, AVELINO	46	175
Ryan Crawford Diagnostic Radiology · Portland, OR	45	149

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