PROVIDER PROFILE · NPI 1902816333

Lourin ChahinMD

PRACTICEMACOMB INTERNISTS PCSee all providers at this practice →

Internal MedicineMacomb, MII

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,254

Unique beneficiaries

—

Total services

2,239

Distinct HCPCS

Medicare payment

$172K

Peer benchmark

Total Medicare services vs. 3,459 Internal Medicine providers in MI — top quintile (cohort median 549).

PRESCRIBING · PART D · 2024

Total Rx claims

5,522

Beneficiaries

—

Total drug cost

$452K

Distinct drugs

120

Brand share

21.3%

Top prescribed drugs

Atorvastatin Calcium473 claims

Omeprazole276 claims

Amlodipine Besylate266 claims

Levothyroxine Sodium262 claims

Losartan Potassium218 claims

QUALITY · MIPS · 2024

Final MIPS score

98.6

Quality

100.0

Cost

82.3

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.99%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$321

Payment records

By payment type

Food and Beverage$321

REFERRAL NETWORK

Where Lourin Chahin'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). 98 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
WILLIAM BEAUMONT HOSPITAL	547	2,123
Mark Zohoury Internal Medicine · Troy, MI	124	520
Mark Friedland Md Pc Vascular Surgery · Troy, MI	98	307
CIESZKOWSKI, JOHN	89	249
Martin Mcgough Cardiology · Rochester Hills, MI	75	186
Zakwan Mahjoub Cardiology · Rochester Hills, MI	50	113
Brian Williamson Cardiology · Troy, MI	48	116
ASCENSION ST JOHN HOSPITAL	41	231
Martin Gross Diagnostic Radiology · Royal Oak, MI	41	88
Tarun Gupta Diagnostic Radiology · Troy, MI	41	95
Ming Lin Hsieh Diagnostic Radiology · Troy, MI	40	97
Mohamad Alhakim Neurology · Royal Oak, MI	39	93

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