What is Sumathy Iyengar's specialty?

Sumathy Iyengar (NPI 1013173723) is a Medicare-billing provider whose primary specialty is Hospitalist in Mason City, IA.

Where does Sumathy Iyengar practice?

Sumathy Iyengar practices in Mason City, IA, based on the location reported in the CMS Medicare provider datasets for NPI 1013173723.

How much does Medicare pay Sumathy Iyengar?

Sumathy Iyengar (NPI 1013173723) received approximately $117K in total Medicare Part B payments, serving 416 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1013173723

Sumathy IyengarM.D.,

HospitalistMason City, IAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

839

Unique beneficiaries

—

Total services

1,419

Distinct HCPCS

Medicare payment

$115K

Peer benchmark

Total Medicare services vs. 198 Hospitalist providers in IA — top quintile (cohort median 636).

PRESCRIBING · PART D · 2024

Total Rx claims

108

Beneficiaries

—

Total drug cost

$645

Distinct drugs

Brand share

25.0%

Top prescribed drugs

Cephalexin20 claims

Hydrocodone/Acetaminophen15 claims

Prednisone14 claims

Tramadol Hcl13 claims

Furosemide12 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (4)

Hospital

Hospital

Hospital

Hospital

REFERRAL NETWORK

Where Sumathy Iyengar'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). 55 inbound referrers · 129 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
ROGERS, JOHN	106	295
METROPOLITAN MEDICAL LABORATORY, PLC	101	435
Mouhamed Al Sheikha Nephrology · Davenport, IA	100	255
GENESIS HEALTH SYSTEM	93	355
Edmund Coyne Cardiology · Davenport, IA	72	199
Christine Walsh Diagnostic Radiology · Iowa City, IA	72	215
Jeffrey Goree Diagnostic Radiology · Davenport, IA	62	219
Dietrich Gerhardt Diagnostic Radiology · Davenport, IA	59	213
BERKOW, ANDREW	52	186
Ashish Singh Hospitalist · Worcester, MA	52	324
Roopa Goswami Diagnostic Radiology · Davenport, IA	45	124
Humphrey Wong Pulmonary Disease · Davenport, IA	44	188

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
GENESIS HEALTH SYSTEM	399	1,136
MEDIC EMS	195	445
ROGERS, JOHN	140	385
METROPOLITAN MEDICAL LABORATORY, PLC	115	555
GENESIS HEALTH SYSTEM	110	302
Christine Walsh Diagnostic Radiology · Iowa City, IA	106	230
Curtis Poor Diagnostic Radiology · Iowa City, IA	105	291
Robert Danielson Diagnostic Radiology · Davenport, IA	102	221
GENESIS HEALTH SYSTEM	99	229
Jeffrey Goree Diagnostic Radiology · Davenport, IA	97	228
Ronald Fuller Diagnostic Radiology · Davenport, IA	96	245
Mouhamed Al Sheikha Nephrology · Davenport, IA	95	320

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