What is Larissa Allen's specialty?

Larissa Allen (NPI 1659536480) is a Medicare-billing provider whose primary specialty is Gastroenterology in Tucson, AZ.

Where does Larissa Allen practice?

Larissa Allen practices in Tucson, AZ, based on the location reported in the CMS Medicare provider datasets for NPI 1659536480.

How much does Medicare pay Larissa Allen?

Larissa Allen (NPI 1659536480) received approximately $129K in total Medicare Part B payments, serving 715 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1659536480

Larissa AllenM.D.

GastroenterologyTucson, AZI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,192

Unique beneficiaries

—

Total services

1,282

Distinct HCPCS

Medicare payment

$119K

Peer benchmark

Total Medicare services vs. 280 Gastroenterology providers in AZ — top quintile (cohort median 659).

PRESCRIBING · PART D · 2024

Total Rx claims

2,024

Beneficiaries

—

Total drug cost

$1.7M

Distinct drugs

Brand share

39.7%

Top prescribed drugs

Omeprazole382 claims

Sodium, Potassium,mag Sulfates363 claims

Pantoprazole Sodium307 claims

Famotidine128 claims

Sucralfate95 claims

QUALITY · MIPS · 2024

Final MIPS score

22.3

Quality

0.0

Cost

74.4

Improvement activities

0.0

Promoting interop.

0.0

Payment adjustment

-6.32%

Individual

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$635

Payment records

By payment type

Food and Beverage$635

Top paying entities

Food and Beverage$635

REFERRAL NETWORK

Where Larissa Allen'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). 21 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
NORTHWEST HOSPITAL LLC	245	725
ORO VALLEY HOSPITAL LLC	44	98
YOSHINO, MARK	43	89
KARTCHNER, ZANE	40	79
Matt Baptista Pathology · Tucson, AZ	34	70
Southwest Ambulance Of Tucson Inc Ambulance Service Provider · Tucson, AZ	33	85
Stephanie Reddick Diagnostic Radiology · Tucson, AZ	31	67
R Christopher Dillon Diagnostic Radiology · Tucson, AZ	29	66
Kevin Kelly Diagnostic Radiology · Tucson, AZ	27	63
Guy Borders Diagnostic Radiology · Tucson, AZ	23	44
BANNER - UNIVERSITY MEDICAL CENTER TUCSON CAMPUS LLC	22	55
Sujatha Reddy Internal Medicine · Tucson, AZ	21	105

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