What is Tricia Merrigan's specialty?

Tricia Merrigan (NPI 1467548727) is a Medicare-billing provider whose primary specialty is General Surgery in Sioux Falls, SD.

Where does Tricia Merrigan practice?

Tricia Merrigan practices in Sioux Falls, SD, based on the location reported in the CMS Medicare provider datasets for NPI 1467548727.

How much does Medicare pay Tricia Merrigan?

Tricia Merrigan (NPI 1467548727) received approximately $76K in total Medicare Part B payments, serving 278 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1467548727

Tricia MerriganM.D.

PRACTICEAVERA MCKENNANSee all providers at this practice →

General SurgerySioux Falls, SDI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

394

Unique beneficiaries

—

Total services

410

Distinct HCPCS

Medicare payment

$67K

Peer benchmark

Total Medicare services vs. 69 General Surgery providers in SD — above median (cohort median 383).

PRESCRIBING · PART D · 2024

Total Rx claims

Beneficiaries

—

Total drug cost

$109

Distinct drugs

Brand share

100.0%

Top prescribed drugs

Hydrocodone/Acetaminophen27 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 Tricia Merrigan'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). 3 inbound referrers · 7 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Amy Krie Medical Oncology · Minneapolis, MN	33	116
Daryl Rife Diagnostic Radiology · Sioux Falls, SD	20	53
Sabina Choudhry Diagnostic Radiology · Sioux Falls, SD	13	29

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
AVERA MCKENNAN	115	450
Amy Krie Medical Oncology · Minneapolis, MN	27	126
Genedx Llc Clinical Laboratory · Gaithersburg, MD	25	38
ALPERS, JOSIE	21	42
Melissa Hoogeveen Nurse Practitioner · Sioux Falls, SD	17	26
Patrick Nelson Diagnostic Radiology · Sioux Falls, SD	14	39
Bradley Paulson Diagnostic Radiology · Sioux Falls, SD	13	22

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