PROVIDER PROFILE · NPI 1932146552

Mark SienkoM.D.

Medical OncologySequim, WAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

437

Unique beneficiaries

—

Total services

574

Distinct HCPCS

Medicare payment

$36K

Peer benchmark

Total Medicare services vs. 101 Medical Oncology providers in WA — above median (cohort median 475).

PRESCRIBING · PART D · 2024

Total Rx claims

520

Beneficiaries

—

Total drug cost

$227K

Distinct drugs

Brand share

7.5%

Top prescribed drugs

Letrozole72 claims

Dexamethasone64 claims

Prednisone51 claims

Tamoxifen Citrate38 claims

Olanzapine32 claims

QUALITY · MIPS · 2024

Final MIPS score

81.8

Quality

69.4

Cost

65.2

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.29%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$240

Payment records

By payment type

Food and Beverage$240

Top paying entities

Food and Beverage$240

REFERRAL NETWORK

Where Mark Sienko'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). 50 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Srivalli Gopaluni Hematology-Oncology · Spokane, WA	221	3,317
PROVIDENCE HEALTH & SERVICES - WASHINGTON	128	789
PROVIDENCE HEALTH & SERVICES - WA	107	411
PROVIDENCE HEALTH & SERVICES - WASHINGTON	92	1,058
Ishwar Bhat Diagnostic Radiology · Spokane, WA	67	184
Incyte Pathology, P.S. Clinical Laboratory · Spokane Valley, WA	62	226
TEEL, GORDON	54	192
Irene Cruite Diagnostic Radiology · Spokane, WA	50	144
MULTICARE HEALTH SYSTEM	46	202
Andrea Balazs Nurse Practitioner · Spokane Valley, WA	33	266
Hematologics Inc Clinical Laboratory · Seattle, WA	33	127
Terri Lewis Diagnostic Radiology · Spokane, WA	30	97

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