What is Ann Armstrong's specialty?

Ann Armstrong (NPI 1659670552) is a Medicare-billing provider whose primary specialty is Nurse Practitioner in Saint Louis, MO.

Where does Ann Armstrong practice?

Ann Armstrong practices in Saint Louis, MO, based on the location reported in the CMS Medicare provider datasets for NPI 1659670552.

How much does Medicare pay Ann Armstrong?

Ann Armstrong (NPI 1659670552) received approximately $4K in total Medicare Part B payments, serving 56 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1659670552

Ann ArmstrongACNP-BC

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Nurse PractitionerSaint Louis, MOI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

Unique beneficiaries

—

Total services

Distinct HCPCS

Medicare payment

$2K

Peer benchmark

Total Medicare services vs. 4,714 Nurse Practitioner providers in MO — bottom quintile (cohort median 251).

PRESCRIBING · PART D · 2024

Total Rx claims

1,241

Beneficiaries

—

Total drug cost

$450K

Distinct drugs

Brand share

76.1%

Top prescribed drugs

Fluticasone/Umeclidin/Vilanter327 claims

Albuterol Sulfate198 claims

Prednisone107 claims

Budesonide/Glycopyr/Formoterol64 claims

Fluticasone Propionate60 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.

REFERRAL NETWORK

Where Ann Armstrong'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). 8 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Peter Holtz Diagnostic Radiology · Chesterfield, MO	53	177
Francisco Quinones Pulmonary Disease · Saint Louis, MO	48	223
Kelby Napier Diagnostic Radiology · Saint Louis, MO	31	93
Debbie Bennett Diagnostic Radiology · Saint Louis, MO	22	60
Phillip Apprill Cardiology · Saint Louis, MO	20	39
Farris Jackson Specialist · St Louis, MO	12	20
Talha Allam Diagnostic Radiology · Saint Louis, MO	12	31
Piotr Kulikowski Internal Medicine · Saint Louis, MO	12	56

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