What is Mark Fierstein's specialty?

Mark Fierstein (NPI 1457426876) is a Medicare-billing provider whose primary specialty is Internal Medicine in New Hyde Park, NY.

Where does Mark Fierstein practice?

Mark Fierstein practices in New Hyde Park, NY, based on the location reported in the CMS Medicare provider datasets for NPI 1457426876.

How much does Medicare pay Mark Fierstein?

Mark Fierstein (NPI 1457426876) received approximately $152K in total Medicare Part B payments, serving 399 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1457426876

Mark FiersteinMD

Internal MedicineNew Hyde Park, NYI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,687

Unique beneficiaries

—

Total services

2,231

Distinct HCPCS

Medicare payment

$148K

Peer benchmark

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

PRESCRIBING · PART D · 2024

Total Rx claims

3,568

Beneficiaries

—

Total drug cost

$235K

Distinct drugs

Brand share

15.6%

Top prescribed drugs

Atorvastatin Calcium354 claims

Amlodipine Besylate236 claims

Rosuvastatin Calcium173 claims

Levothyroxine Sodium158 claims

Hydrochlorothiazide133 claims

QUALITY · MIPS · 2024

Final MIPS score

90.8

Quality

91.8

Cost

75.2

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.66%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

REFERRAL NETWORK

Where Mark Fierstein'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). 7 inbound referrers · 6 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Quest Diagnostics Clinical Laboratories Inc Clinical Laboratory · Melville, NY	168	760
Northwell Health Laboratories Clinical Laboratory · New Hyde Park, NY	21	54
Laboratory Corporation Of America Holdings Clinical Laboratory · Raritan, NJ	19	36
LONG ISLAND JEWISH MEDICAL CENTER	18	40
Alan Cohen Cardiology · New Hyde Park, NY	16	51
NORTH SHORE UNIVERSITY HOSPITAL	15	30
David Fierstein Internal Medicine · New Hyde Park, NY	13	50

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
Quest Diagnostics Clinical Laboratories Inc Clinical Laboratory · Melville, NY	55	179
Northwell Health Laboratories Clinical Laboratory · New Hyde Park, NY	23	63
NORTH SHORE UNIVERSITY HOSPITAL	22	52
LONG ISLAND JEWISH MEDICAL CENTER	21	39
Alan Cohen Cardiology · New Hyde Park, NY	19	46
Barbara Hisler Dermatology · Hew Hyde Park, NY	11	17

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