What is Gregory Arent's specialty?

Gregory Arent (NPI 1245314210) is a Medicare-billing provider whose primary specialty is Internal Medicine in San Rafael, CA.

Where does Gregory Arent practice?

Gregory Arent practices in San Rafael, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1245314210.

How much does Medicare pay Gregory Arent?

Gregory Arent (NPI 1245314210) received approximately $2K in total Medicare Part B payments, serving 16 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1245314210

Gregory ArentMD

PRACTICEKAISER PERMANENTESee all providers at this practice →

Internal MedicineSan Rafael, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

Unique beneficiaries

—

Total services

Distinct HCPCS

Medicare payment

$2K

Peer benchmark

Total Medicare services vs. 10,499 Internal Medicine providers in CA — bottom quintile (cohort median 531).

PRESCRIBING · PART D · 2024

Total Rx claims

329

Beneficiaries

—

Total drug cost

$4K

Distinct drugs

Brand share

5.8%

Top prescribed drugs

Oxycodone Hcl26 claims

Atorvastatin Calcium26 claims

Pantoprazole Sodium25 claims

Furosemide23 claims

Cefadroxil22 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.

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (1)

CCN 050510

Hospital

REFERRAL NETWORK

Where Gregory Arent'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 · 1 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
KAISER FOUNDATION HOSPITALS	112	127

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
Gagandeep Sandhu Cardiology · Los Angeles, CA	11	17

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