What is Brennan Mars's specialty?

Brennan Mars (NPI 1013030923) is a Medicare-billing provider whose primary specialty is Psychologist, Clinical in Boulder, CO.

Where does Brennan Mars practice?

Brennan Mars practices in Boulder, CO, based on the location reported in the CMS Medicare provider datasets for NPI 1013030923.

How much does Medicare pay Brennan Mars?

Brennan Mars (NPI 1013030923) received approximately $44K in total Medicare Part B payments, serving 23 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1013030923

Brennan MarsPSY.D

Psychologist, ClinicalBoulder, COI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

Unique beneficiaries

—

Total services

172

Distinct HCPCS

Medicare payment

$21K

Peer benchmark

Total Medicare services vs. 223 Psychologist, Clinical providers in CO — above median (cohort median 260).

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 Brennan Mars'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). 2 inbound referrers · 6 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Laura Hundemann Physician Assistant · Boulder, CO	17	147
New Schryver Llc Clinical Laboratory · Denver, CO	15	152

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
Laura Hundemann Physician Assistant · Boulder, CO	17	161
Malena Nicodemus Physician Assistant · Aurora, CO	16	137
BOULDER COMMUNITY HEALTH	16	126
New Schryver Llc Clinical Laboratory · Denver, CO	15	145
Michele Lee Geriatric Medicine · Boulder, CO	14	119
Horizon Laboratory Llc Clinical Laboratory · Loveland, CO	11	181

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