PROVIDER PROFILE · NPI 1659390995

John GundzikM.D.

PRACTICEKERN RADIOLOGY MEDICAL GROUP, INCSee all providers at this practice →

Diagnostic RadiologyBakersfield, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

2,900

Unique beneficiaries

—

Total services

43,832

Distinct HCPCS

Medicare payment

$1.1M

Peer benchmark

Total Medicare services vs. 3,474 Diagnostic Radiology providers in CA — top quintile (cohort median 2,975).

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

QUALITY · MIPS · 2024

Final MIPS score

92.4

Quality

75.0

Cost

77.2

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.73%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

REFERRAL NETWORK

Where John Gundzik'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). 48 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Pacific Point Laboratories, Inc. Clinical Laboratory · San Luis Obispo, CA	259	471
DIGNITY HEALTH	121	181
Richard Alexan-Shirabad Neurology · Bakersfield, CA	105	227
BAKERSFIELD MEMORIAL HOSPITAL	104	196
TYMINSKI, LEONARD	57	106
BORNSTEIN, ISAAC	52	90
Bernard Maristany Diagnostic Radiology · Bakersfield, CA	45	56
Unilab Corporation Clinical Laboratory · West Hills, CA	40	104
Alan Mortezaie Diagnostic Radiology · Bakersfield, CA	40	54
Rachel Brock Diagnostic Radiology · Bakersfield, CA	38	61
David Schale Diagnostic Radiology · Bakersfield, CA	37	45
Dawn Engelkemier Diagnostic Radiology · Bakersfield, CA	34	75

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