What is Justin Gainor's specialty?

Justin Gainor (NPI 1487813010) is a Medicare-billing provider whose primary specialty is Medical Oncology in Boston, MA.

Where does Justin Gainor practice?

Justin Gainor practices in Boston, MA, based on the location reported in the CMS Medicare provider datasets for NPI 1487813010.

How much does Medicare pay Justin Gainor?

Justin Gainor (NPI 1487813010) received approximately $63K in total Medicare Part B payments, serving 171 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1487813010

Justin GainorMD

Medical OncologyBoston, MAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

344

Unique beneficiaries

—

Total services

762

Distinct HCPCS

Medicare payment

$60K

Peer benchmark

Total Medicare services vs. 257 Medical Oncology providers in MA — top quintile (cohort median 290).

PRESCRIBING · PART D · 2024

Total Rx claims

Beneficiaries

—

Total drug cost

$373K

Distinct drugs

Brand share

51.0%

Top prescribed drugs

Dexamethasone13 claims

Ceritinib13 claims

Capmatinib Hydrochloride12 claims

Oxycodone Hcl11 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$56K

Payment records

By payment type

Consulting Fee$43K

Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$9K

Honoraria$2K

Travel and Lodging$718

Food and Beverage$617

Top paying entities

Consulting Fee$43K

Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$9K

Honoraria$2K

Travel and Lodging$718

Food and Beverage$617

REFERRAL NETWORK

Where Justin Gainor'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). 16 inbound referrers · 16 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
THE GENERAL HOSPITAL CORPORATION	147	2,318
Matthew Gilman Diagnostic Radiology · Boston, MA	22	81
Florian Fintelmann Diagnostic Radiology · Boston, MA	20	62
PATTI, JOHN	17	66
Joanne Shepard Diagnostic Radiology · Boston, MA	17	45
Lecia Sequist Hematology-Oncology · Boston, MA	14	57
Laura Avery Diagnostic Radiology · Boston, MA	14	32
Amita Sharma Diagnostic Radiology · Boston, MA	14	51
Jeanne Ackman Diagnostic Radiology · Boston, MA	14	40
Dushyant Sahani Diagnostic Radiology · Seattle, WA	13	42
MASS GENERAL BRIGHAM HOME CARE, INC.	13	34
Alice Shaw Hematology-Oncology · Boston, MA	13	49

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
THE GENERAL HOSPITAL CORPORATION	108	1,806
Shaunagh Mcdermott Diagnostic Radiology · Boston, MA	20	37
FALLON SERVICE, INC.	19	36
Matthew Gilman Diagnostic Radiology · Boston, MA	18	56
Florian Fintelmann Diagnostic Radiology · Boston, MA	17	38
Lecia Sequist Hematology-Oncology · Boston, MA	17	88
Milena Petranovic Diagnostic Radiology · Boston, MA	15	30
PATTI, JOHN	15	37
Subba Digumarthy Diagnostic Radiology · Boston, MA	15	33
CARE DIMENSIONS, INC.	13	42
Gerald Abbott Diagnostic Radiology · Boston, MA	12	30
MASS GENERAL BRIGHAM HOME CARE, INC.	12	26

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