What is Kari Castillo's specialty?

Kari Castillo (NPI 1083928956) is a Medicare-billing provider whose primary specialty is Nurse Practitioner in Ann Arbor, MI.

Where does Kari Castillo practice?

Kari Castillo practices in Ann Arbor, MI, based on the location reported in the CMS Medicare provider datasets for NPI 1083928956.

How much does Medicare pay Kari Castillo?

Kari Castillo (NPI 1083928956) received approximately $5K in total Medicare Part B payments, serving 36 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1083928956

Kari CastilloNP

PRACTICEUNIVERSITY OF MICHIGANSee all providers at this practice →

Nurse PractitionerAnn Arbor, MII

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

Unique beneficiaries

—

Total services

Distinct HCPCS

Medicare payment

$5K

Peer benchmark

Total Medicare services vs. 5,391 Nurse Practitioner providers in MI — bottom quintile (cohort median 188).

PRESCRIBING · PART D · 2024

Total Rx claims

908

Beneficiaries

—

Total drug cost

$1.8M

Distinct drugs

Brand share

28.9%

Top prescribed drugs

Acyclovir124 claims

Ruxolitinib Phosphate81 claims

Azithromycin74 claims

Posaconazole66 claims

Ursodiol58 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.

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (1)

CCN 230046

Hospital

REFERRAL NETWORK

Where Kari Castillo'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). 3 inbound referrers · 3 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
REGENTS OF THE UNIVERSITY OF MICHIGAN	46	845
Daniel Couriel Hematology-Oncology · Salt Lake City, UT	19	369
Steven Goldstein Internal Medicine · Orlando, FL	12	125

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
REGENTS OF THE UNIVERSITY OF MICHIGAN	38	730
Daniel Couriel Hematology-Oncology · Salt Lake City, UT	22	353
John Magenau Hematology · Ann Arbor, MI	12	132

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