What is Mark Shaffer's specialty?

Mark Shaffer (NPI 1295836674) is a Medicare-billing provider whose primary specialty is Internal Medicine in Bayside, NY.

Where does Mark Shaffer practice?

Mark Shaffer practices in Bayside, NY, based on the location reported in the CMS Medicare provider datasets for NPI 1295836674.

How much does Medicare pay Mark Shaffer?

Mark Shaffer (NPI 1295836674) received approximately $8K in total Medicare Part B payments, serving 22 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

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

Healthparse Signals

Monitor this provider for changes — dated NPI change events