What is Hassan Tahsildar's specialty?

Hassan Tahsildar (NPI 1629067269) is a Medicare-billing provider whose primary specialty is Medical Oncology in Green Bay, WI.

Where does Hassan Tahsildar practice?

Hassan Tahsildar practices in Green Bay, WI, based on the location reported in the CMS Medicare provider datasets for NPI 1629067269.

How much does Medicare pay Hassan Tahsildar?

Hassan Tahsildar (NPI 1629067269) received approximately $23K in total Medicare Part B payments, serving 144 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1629067269

Hassan TahsildarM.D.

PRACTICEBELLIN MEMORIAL HOSPITAL INCSee all providers at this practice →

Medical OncologyGreen Bay, WII

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

182

Unique beneficiaries

—

Total services

310

Distinct HCPCS

Medicare payment

$20K

Peer benchmark

Total Medicare services vs. 48 Medical Oncology providers in WI — bottom quintile (cohort median 579).

PRESCRIBING · PART D · 2024

Total Rx claims

974

Beneficiaries

—

Total drug cost

$4.1M

Distinct drugs

Brand share

34.0%

Top prescribed drugs

Anastrozole149 claims

Ibrutinib119 claims

Acyclovir76 claims

Ondansetron Hcl61 claims

Prochlorperazine Maleate47 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.

REFERRAL NETWORK

Where Hassan Tahsildar'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). 19 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Patti Marquardt Nurse Practitioner · Green Bay, WI	36	527
OCONTO HOSPITAL & MEDICAL CENTER INC	33	519
Robert Monette Diagnostic Radiology · Green Bay, WI	31	88
ARNHOLT, JEFF	29	97
GREWE, GREGORY	29	107
Kevin Mortara Hematology-Oncology · Green Bay, WI	21	122
CARRIGAN, PATRICK	19	76
Kelly Parling-Lynch Hematology-Oncology · Norton Shores, MI	19	163
AURORA MEDICAL CENTER BAY AREA, INC	17	136
Riley Smyth Diagnostic Radiology · Green Bay, WI	16	53
OPOIEN, JAMES	14	47
Rahul Verma Cardiology · Green Bay, WI	14	29

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