What is Gregory Ahearn's specialty?

Gregory Ahearn (NPI 1598772931) is a Medicare-billing provider whose primary specialty is Critical Care (Intensivists) in Phoenix, AZ.

Where does Gregory Ahearn practice?

Gregory Ahearn practices in Phoenix, AZ, based on the location reported in the CMS Medicare provider datasets for NPI 1598772931.

How much does Medicare pay Gregory Ahearn?

Gregory Ahearn (NPI 1598772931) received approximately $71K in total Medicare Part B payments, serving 294 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1598772931

Gregory AhearnM.D.

Critical Care (Intensivists)Phoenix, AZI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

388

Unique beneficiaries

—

Total services

608

Distinct HCPCS

Medicare payment

$65K

Peer benchmark

Total Medicare services vs. 139 Critical Care (Intensivists) providers in AZ — above median (cohort median 363).

PRESCRIBING · PART D · 2024

Total Rx claims

477

Beneficiaries

—

Total drug cost

$2.3M

Distinct drugs

Brand share

50.3%

Top prescribed drugs

Tadalafil90 claims

Ambrisentan57 claims

Macitentan33 claims

Selexipag32 claims

Albuterol Sulfate29 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$35

Payment records

By payment type

Food and Beverage$35

Top paying entities

Food and Beverage$35

REFERRAL NETWORK

Where Gregory Ahearn'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). 49 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Ralph Drosten Diagnostic Radiology · Tucson, AZ	130	365
ORNSTEIN, SANFORD	112	327
Youngsoo Cho Cardiology · Phoenix, AZ	71	137
WALLACE, ROBERT	59	135
Alan Pitt Diagnostic Radiology · Phoenix, AZ	49	112
PRENGER, ERIN	47	109
Thomas Ross Cardiology · Phoenix, AZ	46	128
R M Arizona Holdings Inc Ambulance Service Provider · Mesa, AZ	45	71
Richard Sue Critical Care (Intensivists) · Gilbert, AZ	43	92
Tilina Hu Diagnostic Radiology · Phoenix, AZ	38	67
NPI 1316992407	37	70
Randy Richardson Diagnostic Radiology · Phoenix, AZ	36	83

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