What is Diana Sewell's specialty?

Diana Sewell (NPI 1821247065) is a Medicare-billing provider whose primary specialty is Internal Medicine in Norwalk, CT.

Where does Diana Sewell practice?

Diana Sewell practices in Norwalk, CT, based on the location reported in the CMS Medicare provider datasets for NPI 1821247065.

How much does Medicare pay Diana Sewell?

Diana Sewell (NPI 1821247065) received approximately $33K in total Medicare Part B payments, serving 116 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

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

Healthparse Signals

Monitor this provider for changes — dated NPI change events