What is Thomas Duncan's specialty?

Thomas Duncan (NPI 1588641039) is a Medicare-billing provider whose primary specialty is Internal Medicine in Neenah, WI.

Where does Thomas Duncan practice?

Thomas Duncan practices in Neenah, WI, based on the location reported in the CMS Medicare provider datasets for NPI 1588641039.

How much does Medicare pay Thomas Duncan?

Thomas Duncan (NPI 1588641039) received approximately $79K in total Medicare Part B payments, serving 223 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1588641039

Thomas DuncanMD

Internal MedicineNeenah, WII

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,477

Unique beneficiaries

—

Total services

2,314

Distinct HCPCS

Medicare payment

$72K

Peer benchmark

Total Medicare services vs. 1,244 Internal Medicine providers in WI — top quintile (cohort median 578).

PRESCRIBING · PART D · 2024

Total Rx claims

8,509

Beneficiaries

—

Total drug cost

$572K

Distinct drugs

132

Brand share

16.4%

Top prescribed drugs

Atorvastatin Calcium479 claims

Amlodipine Besylate367 claims

Omeprazole337 claims

Lisinopril336 claims

Hydrochlorothiazide280 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 Thomas Duncan'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). 20 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Douglas Mielke Interventional Cardiology · Appleton, WI	31	124
Sara Zuiches Physician Assistant · Neenah, WI	30	268
Hong Xie Diagnostic Radiology · Neenah, WI	27	69
NEVIN, DAVID	23	83
Douglas Conners Diagnostic Radiology · New Berlin, WI	19	48
Mayank Arora Hospitalist · Spokane, WA	17	76
Todd Peebles Diagnostic Radiology · Burlington, VT	17	62
Joseph Introcaso Diagnostic Radiology · Neenah, WI	17	83
Corbin Asbury Diagnostic Radiology · Neenah, WI	15	49
Daniel Macksood Diagnostic Radiology · Neenah, WI	15	68
CHANTELOIS, ALLEN	13	39
Ravi Pahwani Family Practice · Greensboro, NC	13	58

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