What is John Zdral's specialty?

John Zdral (NPI 1801993944) is a Medicare-billing provider whose primary specialty is Ophthalmology in Fullerton, CA.

Where does John Zdral practice?

John Zdral practices in Fullerton, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1801993944.

How much does Medicare pay John Zdral?

John Zdral (NPI 1801993944) received approximately $283K in total Medicare Part B payments, serving 1,057 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1801993944

John ZdralMD

OphthalmologyFullerton, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

2,491

Unique beneficiaries

—

Total services

3,099

Distinct HCPCS

Medicare payment

$280K

Peer benchmark

Total Medicare services vs. 2,144 Ophthalmology providers in CA — above median (cohort median 1,859).

PRESCRIBING · PART D · 2024

Total Rx claims

3,560

Beneficiaries

—

Total drug cost

$380K

Distinct drugs

Brand share

33.6%

Top prescribed drugs

Latanoprost1,245 claims

Dorzolamide Hcl/Timolol Maleat596 claims

Brimonidine Tartrate392 claims

Timolol Maleate310 claims

Brimonidine Tartrate99 claims

QUALITY · MIPS · 2024

Final MIPS score

89.0

Quality

97.8

Cost

66.3

Improvement activities

40.0

Promoting interop.

0.0

Payment adjustment

0.59%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$41

Payment records

By payment type

Food and Beverage$41

Top paying entities

Food and Beverage$41

REFERRAL NETWORK

Where John Zdral'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). 26 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
ST JUDE HOSPITAL INC	306	838
Victor Lee Pathology · Oceanside, CA	170	378
Unilab Corporation Clinical Laboratory · West Hills, CA	72	163
Lynnus Peng Anesthesiology · Fullerton, CA	22	58
Scott Grant Ophthalmology · Fullerton, CA	22	46
UNGER, PHILLIP	21	30
Eugene Byun Cardiology · Fullerton, CA	20	32
William Batty Internal Medicine · Fullerton, CA	18	25
David Ruckman Internal Medicine · Fullerton, CA	18	40
GALLIGAN, DONALD	17	37
Daniel Landa Internal Medicine · Fullerton, CA	17	61
Samuel Maxwell Diagnostic Radiology · Fullerton, CA	17	19

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