What is Mark Demeo's specialty?

Mark Demeo (NPI 1972549327) is a Medicare-billing provider whose primary specialty is Gastroenterology in Chicago, IL.

Where does Mark Demeo practice?

Mark Demeo practices in Chicago, IL, based on the location reported in the CMS Medicare provider datasets for NPI 1972549327.

How much does Medicare pay Mark Demeo?

Mark Demeo (NPI 1972549327) received approximately $67K in total Medicare Part B payments, serving 417 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1972549327

Mark DemeoM.D.

PRACTICERUSH UNIVERSITY MEDICAL CENTERSee all providers at this practice →

GastroenterologyChicago, ILI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

515

Unique beneficiaries

—

Total services

554

Distinct HCPCS

Medicare payment

$62K

Peer benchmark

Total Medicare services vs. 606 Gastroenterology providers in IL — below median (cohort median 726).

PRESCRIBING · PART D · 2024

Total Rx claims

881

Beneficiaries

—

Total drug cost

$1.6M

Distinct drugs

Brand share

51.3%

Top prescribed drugs

Linaclotide113 claims

Famotidine85 claims

Lipase/Protease/Amylase83 claims

Misoprostol77 claims

Peg3350/Sod Sulf,bicarb,cl/Kcl73 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 Demeo'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). 10 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Palmi Shah Diagnostic Radiology · Chicago, IL	26	55
Meri Chen Diagnostic Radiology · Chicago, IL	22	58
Carol Lin Diagnostic Radiology · Chicago, IL	21	54
John Hibbeln Diagnostic Radiology · Chicago, IL	19	39
NPI 1194783076	18	34
John Meyer Diagnostic Radiology · Chicago, IL	14	39
Jagadeesh Singh Diagnostic Radiology · Chicago, IL	13	30
RUGGIE, NEAL	12	25
Stephanie Shors Diagnostic Radiology · Chicago, IL	11	44
Superior Air-Ground Ambulance Service, Inc Ambulance Service Provider · Elmhurst, IL	11	37

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