PROVIDER PROFILE · NPI 1003044488

Marshall ChamberlinMD

Internal MedicineScarborough, MEI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

Unique beneficiaries

—

Total services

Distinct HCPCS

Medicare payment

$3K

Peer benchmark

Total Medicare services vs. 404 Internal Medicine providers in ME — bottom quintile (cohort median 401).

PRESCRIBING · PART D · 2024

Total Rx claims

324

Beneficiaries

—

Total drug cost

$7K

Distinct drugs

Brand share

30.2%

Top prescribed drugs

Albuterol Sulfate56 claims

Atorvastatin Calcium38 claims

Omeprazole29 claims

Oxycodone Hcl22 claims

Venlafaxine Hcl17 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (1)

CCN 200009

Hospital

REFERRAL NETWORK

Where Marshall Chamberlin'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). 1 inbound referrers · 4 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
CAMBRIDGE PUBLIC HEALTH COMMISSION	61	695

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
CAMBRIDGE PUBLIC HEALTH COMMISSION	81	1,117
Margarita Burdetsky Physician Assistant · Everett, MA	17	79
Jonathan Opraseuth Interventional Radiology · Falls Church, VA	11	57
Cataldo Ambulance Service Inc Ambulance Service Provider · Somerville, MA	11	116

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