What is Katherine Westbrook's specialty?

Katherine Westbrook (NPI 1215950159) is a Medicare-billing provider whose primary specialty is Nurse Practitioner in Walnut Creek, CA.

Where does Katherine Westbrook practice?

Katherine Westbrook practices in Walnut Creek, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1215950159.

How much does Medicare pay Katherine Westbrook?

Katherine Westbrook (NPI 1215950159) received approximately $27K in total Medicare Part B payments, serving 159 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1215950159

Katherine WestbrookN.P.

Nurse PractitionerWalnut Creek, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

262

Unique beneficiaries

—

Total services

266

Distinct HCPCS

Medicare payment

$26K

Peer benchmark

Total Medicare services vs. 8,685 Nurse Practitioner providers in CA — above median (cohort median 222).

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

QUALITY · MIPS · 2024

Final MIPS score

90.3

Quality

89.5

Cost

74.3

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.64%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$156

Payment records

By payment type

Food and Beverage$156

Top paying entities

Food and Beverage$156

REFERRAL NETWORK

Where Katherine Westbrook'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). 1 inbound referrers · 10 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Louay Toma Orthopedic Surgery · Walnut Creek, CA	11	13

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
JOHN MUIR HEALTH	104	194
JOHN MUIR HEALTH	56	113
Laboratory Corporation Of America Clinical Laboratory · San Diego, CA	30	48
JOHN MUIR HEALTH	21	21
Louay Toma Orthopedic Surgery · Walnut Creek, CA	18	57
Christine Martinez Physician Assistant · Walnut Creek, CA	17	20
Jonathan Posin Diagnostic Radiology · Walnut Creek, CA	16	17
MANDAL, RAJNI	15	15
Kurt Dittmar Anesthesiology · Walnut Creek, CA	14	16
William Hoddick Diagnostic Radiology · Walnut Creek, CA	11	12

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