PROVIDER PROFILE · NPI 1851387344

James KosterMD

OphthalmologyPhoenix, AZI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

2,535

Unique beneficiaries

—

Total services

3,158

Distinct HCPCS

Medicare payment

$320K

Peer benchmark

Total Medicare services vs. 293 Ophthalmology providers in AZ — above median (cohort median 2,550).

PRESCRIBING · PART D · 2024

Total Rx claims

1,095

Beneficiaries

—

Total drug cost

$129K

Distinct drugs

Brand share

28.3%

Top prescribed drugs

Latanoprost317 claims

Prednisolone Acetate188 claims

Timolol Maleate93 claims

Bimatoprost81 claims

Moxifloxacin Hcl62 claims

QUALITY · MIPS · 2024

Final MIPS score

89.7

Quality

81.3

Cost

84.4

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.62%

Individual

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$462

Payment records

By payment type

Food and Beverage$462

REFERRAL NETWORK

Where James Koster'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). 6 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Raymond Nierva Anesthesiology · Phoenix, AZ	112	346
E. Bloemker Ophthalmology · Phoenix, AZ	29	51
George Yanik Ophthalmology · Phoenix, AZ	18	25
MAYO CLINIC ARIZONA	16	48
Nolawi Mengesha Internal Medicine · Phoenix, AZ	11	28
HONORHEALTH	11	26

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