What is Gregory Shifrin's specialty?

Gregory Shifrin (NPI 1477688604) is a Medicare-billing provider whose primary specialty is Obstetrics & Gynecology in Brooklyn, NY.

Where does Gregory Shifrin practice?

Gregory Shifrin practices in Brooklyn, NY, based on the location reported in the CMS Medicare provider datasets for NPI 1477688604.

How much does Medicare pay Gregory Shifrin?

Gregory Shifrin (NPI 1477688604) received approximately $196K in total Medicare Part B payments, serving 233 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1477688604

Gregory ShifrinMD

PRACTICEGREL OBS OBGYN PCSee all providers at this practice →

Obstetrics & GynecologyBrooklyn, NYI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,781

Unique beneficiaries

—

Total services

2,403

Distinct HCPCS

Medicare payment

$190K

Peer benchmark

Total Medicare services vs. 1,739 Obstetrics & Gynecology providers in NY — top quintile (cohort median 125).

PRESCRIBING · PART D · 2024

Total Rx claims

493

Beneficiaries

—

Total drug cost

$39K

Distinct drugs

Brand share

37.3%

Top prescribed drugs

Terconazole72 claims

Fluconazole68 claims

Estradiol54 claims

Clotrimazole/Betamethasone Dip50 claims

Doxycycline Hyclate39 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$338

Payment records

By payment type

Food and Beverage$338

Top paying entities

Food and Beverage$338

REFERRAL NETWORK

Where Gregory Shifrin'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). 3 inbound referrers · 4 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
NPI 1437156981	16	39
Bioreference Health, Llc Clinical Laboratory · Elmwood Park, NJ	14	51
Sma Medical, Inc. Clinical Laboratory · Feasterville, PA	13	46

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
Quest Diagnostics Incorporated Clinical Laboratory · Clifton, NJ	15	60
Bioreference Health, Llc Clinical Laboratory · Elmwood Park, NJ	14	83
NPI 1437156981	12	35
NYU LANGONE HOSPITALS	12	23

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