What is Martin Ast's specialty?

Martin Ast (NPI 1679515415) is a Medicare-billing provider whose primary specialty is Cardiology in Saint Peters, MO.

Where does Martin Ast practice?

Martin Ast practices in Saint Peters, MO, based on the location reported in the CMS Medicare provider datasets for NPI 1679515415.

How much does Medicare pay Martin Ast?

Martin Ast (NPI 1679515415) received approximately $90K in total Medicare Part B payments, serving 679 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1679515415

Martin AstM.D.

CardiologySaint Peters, MOI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,220

Unique beneficiaries

—

Total services

1,708

Distinct HCPCS

Medicare payment

$86K

Peer benchmark

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

PRESCRIBING · PART D · 2024

Total Rx claims

5,234

Beneficiaries

—

Total drug cost

$958K

Distinct drugs

Brand share

22.9%

Top prescribed drugs

Metoprolol Succinate810 claims

Apixaban535 claims

Amlodipine Besylate519 claims

Lisinopril339 claims

Metoprolol Tartrate333 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 Martin Ast'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). 71 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
BARNES JEWISH ST PETERS HOSPITAL INC	765	2,148
St. Charles County Ambulance District Ambulance Service Provider · Saint Peters, MO	207	326
Marc Lewen Cardiology · Saint Peters, MO	195	364
NPI 1265474001	151	224
Joelle Biernacki Diagnostic Radiology · Saint Louis, MO	149	252
James Kelly Diagnostic Radiology · Saint Louis, MO	139	300
MISSOURI BAPTIST MEDICAL CENTER	136	210
Michael Missler Cardiology · Saint Peters, MO	122	217
Constance Courtois Diagnostic Radiology · Saint Louis, MO	111	213
John Hartweger Internal Medicine · Saint Peters, MO	110	215
Alan Brook Pulmonary Disease · Saint Peters, MO	106	253
April Thebeau Internal Medicine · Saint Peters, MO	105	191

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