What is Mark Collar's specialty?

Mark Collar (NPI 1659354553) is a Medicare-billing provider whose primary specialty is Anesthesiology in Monroe, WI.

Where does Mark Collar practice?

Mark Collar practices in Monroe, WI, based on the location reported in the CMS Medicare provider datasets for NPI 1659354553.

How much does Medicare pay Mark Collar?

Mark Collar (NPI 1659354553) received approximately $15K in total Medicare Part B payments, serving 248 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1659354553

Mark CollarM.D.

AnesthesiologyMonroe, WII

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

161

Unique beneficiaries

—

Total services

162

Distinct HCPCS

Medicare payment

$7K

Peer benchmark

Total Medicare services vs. 863 Anesthesiology providers in WI — top quintile (cohort median 157).

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

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 Mark Collar'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). 17 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
ASPIRUS RHINELANDER & TOMAHAWK HOSPITALS & CLINICS, INC.	234	675
MORGAN, BRADLEY	80	95
Brian Schultz General Surgery · Mauston, WI	59	202
Steven Gasper Certified Registered Nurse Anesthetist (CRNA) · Merrill, WI	47	54
Jonathan Currie Diagnostic Radiology · Rhinelander, WI	41	58
ZULEGER, KATHLEEN	35	38
Thomas Boostrom Certified Registered Nurse Anesthetist (CRNA) · Wausau, WI	33	37
Benjamin Abadeer General Surgery · Appleton, WI	27	86
Christopher Koeppl Internal Medicine · Rhinelander, WI	22	59
Jennifer Svencer Physician Assistant · Rhinelander, WI	19	22
Olumide Omiwade Family Practice · Rhinelander, WI	15	27
TVEDTEN, DANIEL	13	39

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