What is Gregory Lambourne's specialty?

Gregory Lambourne (NPI 1598775850) is a Medicare-billing provider whose primary specialty is Internal Medicine in Lake City, MI.

Where does Gregory Lambourne practice?

Gregory Lambourne practices in Lake City, MI, based on the location reported in the CMS Medicare provider datasets for NPI 1598775850.

How much does Medicare pay Gregory Lambourne?

Medicare Part B utilization, prescribing (Part D), MIPS quality scores, and industry payments for Gregory Lambourne (NPI 1598775850) are detailed on this CareTrace profile.

PROVIDER PROFILE · NPI 1598775850

Gregory Lambourne

PRACTICELAKE CITY PRIMARY CARE PCSee all providers at this practice →

Internal MedicineLake City, MII

MEDICARE UTILIZATION · PART B · 2024

No data available for this provider in 2024.

PRESCRIBING · PART D · 2024

Total Rx claims

Beneficiaries

—

Total drug cost

$10K

Distinct drugs

Brand share

12.9%

Top prescribed drugs

Tamsulosin Hcl24 claims

Levothyroxine Sodium16 claims

Spironolactone12 claims

Bumetanide11 claims

Duloxetine Hcl11 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 Gregory Lambourne'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). 82 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
KOWALSKI, ROBERT	164	397
MERCY HOSPITAL CADILLAC	162	421
NORTH FLIGHT INC	143	342
Daniel Boss Diagnostic Radiology · Traverse City, MI	121	250
Jesse Johnson Diagnostic Radiology · Traverse City, MI	120	289
Ryan Holmes Diagnostic Radiology · Traverse City, MI	107	254
Clark Phelps Diagnostic Radiology · Traverse City, MI	101	261
James Shirley Diagnostic Radiology · Traverse City, MI	98	231
PAYNE, DAVID	95	366
Michael Peacock Emergency Medicine · Ann Arbor, MI	92	208
SHINTANI, GARY	90	318
KLEGMAN, STEVEN	88	215

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