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PROVIDER PROFILE · NPI 1376719104

John MascarenhasMD

PRACTICETHE MOUNT SINAI HOSPITALSee all providers at this practice →
HematologyNew York, NYI
CROSS-REFERENCE

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MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
211
Unique beneficiaries
—
Total services
610
Distinct HCPCS
4
Medicare payment
$52K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 102 Hematology providers in NY — above median (cohort median 474).
PRESCRIBING · PART D · 2024
Total Rx claims
325
Beneficiaries
—
Total drug cost
$2.0M
Distinct drugs
9
Brand share
42.2%
Top prescribed drugs
Ruxolitinib Phosphate78 claims
Allopurinol55 claims
Acyclovir46 claims
Posaconazole30 claims
Hydroxyurea30 claims
REFERRAL NETWORK

Where John Mascarenhas'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). 6 inbound referrers · 12 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
MOUNT SINAI HOSPITAL1698
Ajai Chari
Hematology-Oncology · New York, NY
1638
Janice Gabrilove
Medical Oncology · New York, NY
1570
Joseph Gomes
Cardiology · New York, NY
1534
Lewis Silverman
Medical Oncology · New York, NY
1329
Hearn Cho
Medical Oncology · New York, NY
1356
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
MOUNT SINAI HOSPITAL1414,301
Bruce Petersen
Pathology · New York, NY
30167
LONGTINE, JANINA28117
Marina Kremyanskaya
Medical Oncology · New York, NY
19195
Quest Diagnostics Incorporated
Clinical Laboratory · Clifton, NJ
18102
Janice Gabrilove
Medical Oncology · New York, NY
1582
MOUNT SINAI HOSPITAL1476
Ronald Hoffman
Hematology · New York, NY
1359
Ajai Chari
Hematology-Oncology · New York, NY
1323
Hearn Cho
Medical Oncology · New York, NY
1176
FELDSTEIN, JULIE1153
Mary Salvatore
Diagnostic Radiology · New York, NY
1126
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.
QUALITY · MIPS · 2024
No data available for this provider in 2024.
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
Total received
$144K
Payment records
87
By payment type
Consulting Fee$112K
Travel and Lodging$16K
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$14K
Food and Beverage$2K
Education$12