What is Diana Westerfield's specialty?

Diana Westerfield (NPI 1962440883) is a Medicare-billing provider whose primary specialty is Cardiology in Saint Peters, MO.

Where does Diana Westerfield practice?

Diana Westerfield practices in Saint Peters, MO, based on the location reported in the CMS Medicare provider datasets for NPI 1962440883.

How much does Medicare pay Diana Westerfield?

Diana Westerfield (NPI 1962440883) received approximately $81K in total Medicare Part B payments, serving 752 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1962440883

Diana WesterfieldD.O.

CardiologySaint Peters, MOI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,103

Unique beneficiaries

—

Total services

1,484

Distinct HCPCS

Medicare payment

$65K

Peer benchmark

Total Medicare services vs. 343 Cardiology providers in MO — below median (cohort median 2,194).

PRESCRIBING · PART D · 2024

Total Rx claims

6,926

Beneficiaries

—

Total drug cost

$1.3M

Distinct drugs

Brand share

21.3%

Top prescribed drugs

Metoprolol Succinate665 claims

Atorvastatin Calcium654 claims

Apixaban633 claims

Lisinopril546 claims

Metoprolol Tartrate475 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$99

Payment records

By payment type

Food and Beverage$99

Top paying entities

Food and Beverage$99

REFERRAL NETWORK

Where Diana Westerfield'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). 50 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
BARNES JEWISH ST PETERS HOSPITAL INC	458	1,424
Marc Lewen Cardiology · Saint Peters, MO	137	222
St. Charles County Ambulance District Ambulance Service Provider · Saint Peters, MO	120	192
MISSOURI BAPTIST MEDICAL CENTER	111	181
James Kelly Diagnostic Radiology · Saint Louis, MO	107	248
NPI 1265474001	101	164
Joelle Biernacki Diagnostic Radiology · Saint Louis, MO	97	156
Michael Missler Cardiology · Saint Peters, MO	80	155
Constance Courtois Diagnostic Radiology · Saint Louis, MO	67	125
Alan Brook Pulmonary Disease · Saint Peters, MO	58	145
VLAHOVICH, GARY	58	109
John Hartweger Internal Medicine · Saint Peters, MO	57	93

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