PROVIDER PROFILE · NPI 1295836674

Mark ShafferMD

Internal MedicineBayside, NYI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

Unique beneficiaries

—

Total services

124

Distinct HCPCS

Medicare payment

$8K

Peer benchmark

Total Medicare services vs. 7,864 Internal Medicine providers in NY — bottom quintile (cohort median 552).

PRESCRIBING · PART D · 2024

Total Rx claims

218

Beneficiaries

—

Total drug cost

$10K

Distinct drugs

Brand share

19.3%

Top prescribed drugs

Rosuvastatin Calcium55 claims

Ergocalciferol (Vitamin D2)23 claims

Amlodipine Besylate20 claims

Valsartan20 claims

Sitagliptin Phosphate19 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 Mark Shaffer'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). 2 inbound referrers · 2 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Bayside Laboratories Clinical Laboratory · Bayside, NY	20	157
William Berger Cardiology · Manhasset, NY	14	36

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
Bayside Laboratories Clinical Laboratory · Bayside, NY	16	118
William Berger Cardiology · Manhasset, NY	13	40

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