PROVIDER PROFILE · NPI 1730120676

Lawrence SenffnerM.D.

Internal MedicineArcata, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

362

Unique beneficiaries

—

Total services

452

Distinct HCPCS

Medicare payment

$3K

Peer benchmark

Total Medicare services vs. 10,499 Internal Medicine providers in CA — below median (cohort median 531).

PRESCRIBING · PART D · 2024

Total Rx claims

Beneficiaries

—

Total drug cost

$1K

Distinct drugs

Brand share

38.8%

Top prescribed drugs

Atorvastatin Calcium19 claims

Spironolact/Hydrochlorothiazid19 claims

Celecoxib11 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.

REFERRAL NETWORK

Where Lawrence Senffner'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). 23 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Natalia Zarzhevsky Diagnostic Radiology · Arcata, CA	294	886
Tuan Luu Emergency Medicine · Eureka, CA	99	238
ARCATA-MAD RIVER AMBULANCE	93	173
MANDIBERG, ROBERT	42	106
John Fjerstad Podiatry · Mckinleyville, CA	37	131
Shahram Abbassi Anesthesiology · Arcata, CA	34	93
Wahidullah Wahidullah Internal Medicine · Eureka, CA	33	89
Nhat Hoang Hospitalist · Santa Cruz, CA	32	91
Khoi Nguyen Family Practice · Arcata, CA	30	128
GARCIA, GARY	29	83
WALTON, BETTY	29	72
Kelly Kinsley Dermatology · Arcata, CA	27	47

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