What is James Kolker's specialty?

James Kolker (NPI 1568433373) is a Medicare-billing provider whose primary specialty is Radiation Oncology in Philadelphia, PA.

Where does James Kolker practice?

James Kolker practices in Philadelphia, PA, based on the location reported in the CMS Medicare provider datasets for NPI 1568433373.

How much does Medicare pay James Kolker?

James Kolker (NPI 1568433373) received approximately $129K in total Medicare Part B payments, serving 265 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1568433373

James KolkerMD

PRACTICEUNIV OF PENN IMAGING CENTERSee all providers at this practice →

Radiation OncologyPhiladelphia, PAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

775

Unique beneficiaries

—

Total services

1,665

Distinct HCPCS

Medicare payment

$122K

Peer benchmark

Total Medicare services vs. 296 Radiation Oncology providers in PA — above median (cohort median 1,328).

PRESCRIBING · PART D · 2024

Total Rx claims

Beneficiaries

—

Total drug cost

$992

Distinct drugs

Brand share

0.0%

Top prescribed drugs

Tamsulosin Hcl64 claims

Cefpodoxime Proxetil31 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where James Kolker'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). 11 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
THE PENNSYLVANIA HOSPITAL OF THE UNIVERSITY OF PENNSYLVANIA HEALTH SYS	123	1,146
Suneel Nagda Radiation Oncology · Philadelphia, PA	38	382
John Lee Neurosurgery · Philadelphia, PA	24	84
Quest Diagnostics Clinical Laboratories Inc Clinical Laboratory · Norristown, PA	22	74
David Mintzer Hematology-Oncology · Philadelphia, PA	21	305
Geoffrey Geiger Hematology-Oncology · Covina, CA	19	401
Beth Zigmund Diagnostic Radiology · Burlington, VT	18	48
DOLINSKAS, CAROL	16	57
Linda Bagley Diagnostic Radiology · Philadelphia, PA	12	20
Douglas Beach Hematology-Oncology · Philadelphia, PA	12	124
Tunde Farkas Pathology · Philadelphia, PA	11	32

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