What is Mark Brennan's specialty?

Mark Brennan (NPI 1225001746) is a Medicare-billing provider whose primary specialty is Physical Medicine and Rehabilitation in Clinton Township, MI.

Where does Mark Brennan practice?

Mark Brennan practices in Clinton Township, MI, based on the location reported in the CMS Medicare provider datasets for NPI 1225001746.

How much does Medicare pay Mark Brennan?

Mark Brennan (NPI 1225001746) received approximately $50K in total Medicare Part B payments, serving 114 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1225001746

Mark BrennanMD

PRACTICENEUROSURGERY GROUP P.C.See all providers at this practice →

Physical Medicine and RehabilitationClinton Township, MII

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

220

Unique beneficiaries

—

Total services

468

Distinct HCPCS

Medicare payment

$49K

Peer benchmark

Total Medicare services vs. 368 Physical Medicine and Rehabilitation providers in MI — below median (cohort median 855).

PRESCRIBING · PART D · 2024

Total Rx claims

1,142

Beneficiaries

—

Total drug cost

$15K

Distinct drugs

Brand share

27.8%

Top prescribed drugs

Hydrocodone/Acetaminophen317 claims

Methylprednisolone176 claims

Naproxen134 claims

Tramadol Hcl125 claims

Cyclobenzaprine Hcl83 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 Mark Brennan'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). 5 inbound referrers · 7 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
GRADOLPH, PAUL	34	149
Harvey Minkin Diagnostic Radiology · West Bloomfield, MI	29	97
WILLIAM BEAUMONT HOSPITAL	18	65
Fadi Oska Internal Medicine · Sterling Heights, MI	14	128
DETROIT BIO MEDICAL LABS INC	12	125

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
NEUROSURGERY GROUP P.C.	47	216
GRADOLPH, PAUL	22	98
WILLIAM BEAUMONT HOSPITAL	17	64
WILLIAM BEAUMONT HOSPITAL	14	39
Fadi Oska Internal Medicine · Sterling Heights, MI	13	77
Harvey Minkin Diagnostic Radiology · West Bloomfield, MI	13	34
HENRY FORD MACOMB HOSPITAL CORPORATION	11	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