What is Mark Gelfand's specialty?

Mark Gelfand (NPI 1801849658) is a Medicare-billing provider whose primary specialty is Internal Medicine in Brooklyn, NY.

Where does Mark Gelfand practice?

Mark Gelfand practices in Brooklyn, NY, based on the location reported in the CMS Medicare provider datasets for NPI 1801849658.

How much does Medicare pay Mark Gelfand?

Mark Gelfand (NPI 1801849658) received approximately $608K in total Medicare Part B payments, serving 556 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1801849658

Mark GelfandMD

PRACTICEGERTSIK PODIATRY P.C.See all providers at this practice →

Internal MedicineBrooklyn, NYI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

15,664

Unique beneficiaries

—

Total services

28,480

Distinct HCPCS

Medicare payment

$604K

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

21,126

Beneficiaries

—

Total drug cost

$2.0M

Distinct drugs

183

Brand share

28.3%

Top prescribed drugs

Amlodipine Besylate1,303 claims

Atorvastatin Calcium1,085 claims

Rosuvastatin Calcium989 claims

Metoprolol Succinate839 claims

Levothyroxine Sodium670 claims

QUALITY · MIPS · 2024

Final MIPS score

23.9

Quality

0.0

Cost

79.8

Improvement activities

0.0

Promoting interop.

0.0

Payment adjustment

-6.13%

Individual

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$620

Payment records

By payment type

Food and Beverage$620

Top paying entities

Food and Beverage$620

REFERRAL NETWORK

Where Mark Gelfand'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). 12 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Bioreference Health, Llc Clinical Laboratory · Elmwood Park, NJ	200	1,982
Vladimir Gertsik Podiatry · Brooklyn, NY	32	209
MAIMONIDES MEDICAL CENTER	22	86
Aleksey Kamenetsky Cardiology · Brooklyn, NY	20	107
Ilona Genis Ophthalmology · Brooklyn, NY	20	144
ADVANCED MULTI DIAGNOSTIC SERVICES	18	104
Elvira Kamenetsky Neurology · Brooklyn, NY	15	78
NEW YORK CITY HEALTH AND HOSPITALS CORPORATION	14	86
Lenco Diagnostic Laboratories,inc. Clinical Laboratory · Brooklyn, NY	13	93
George Tavoulareas Psychiatry · Santa Barbara, CA	12	67
Quality Healthcare Management Inc Clinical Laboratory · Brooklyn, NY	11	73
Ameripath New York Llc Clinical Laboratory · White Plains, NY	11	41

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