What is John Karth's specialty?

John Karth (NPI 1588862320) is a Medicare-billing provider whose primary specialty is Ophthalmology in Eugene, OR.

Where does John Karth practice?

John Karth practices in Eugene, OR, based on the location reported in the CMS Medicare provider datasets for NPI 1588862320.

How much does Medicare pay John Karth?

John Karth (NPI 1588862320) received approximately $5.3M in total Medicare Part B payments, serving 1,235 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1588862320

John KarthM.D.

OphthalmologyEugene, ORI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

4,153

Unique beneficiaries

—

Total services

122,285

Distinct HCPCS

Medicare payment

$5.2M

Peer benchmark

Total Medicare services vs. 263 Ophthalmology providers in OR — top quintile (cohort median 1,671).

PRESCRIBING · PART D · 2024

Total Rx claims

887

Beneficiaries

—

Total drug cost

$48K

Distinct drugs

Brand share

24.7%

Top prescribed drugs

Ofloxacin127 claims

Prednisolone Acetate123 claims

Neomycin/Polymyxin B/Dexametha118 claims

Ketorolac Tromethamine110 claims

Bromfenac Sodium85 claims

QUALITY · MIPS · 2024

Final MIPS score

93.7

Quality

86.8

Cost

86.4

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.78%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$569

Payment records

By payment type

Food and Beverage$569

Top paying entities

Food and Beverage$569

REFERRAL NETWORK

Where John Karth'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). 37 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
MERCY MEDICAL CENTER, INC.	121	551
PEACEHEALTH	101	254
BAY AREA HOSPITAL DISTRICT	50	220
Oregon Eye Surgery Center, Inc. Ambulatory Surgical Center · Eugene, OR	40	78
PEACEHEALTH	27	87
Quest Diagnostics Clinical Laboratories Inc Clinical Laboratory · Seattle, WA	25	74
Laboratory Corporation Of America Clinical Laboratory · Seattle, WA	25	53
Jon Kintner Ophthalmology · North Bend, OR	23	53
Robert Gunderman Diagnostic Radiology · Springfield, OR	23	49
Bradley Seely Ophthalmology · Roseburg, OR	22	49
Patrick Gregg Ophthalmology · Roseburg, OR	20	53
Neil Kumar Nephrology · Roseburg, OR	19	88

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