What is Gregory Wiener's specialty?

Gregory Wiener (NPI 1811099534) is a Medicare-billing provider whose primary specialty is Gastroenterology in Chula Vista, CA.

Where does Gregory Wiener practice?

Gregory Wiener practices in Chula Vista, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1811099534.

How much does Medicare pay Gregory Wiener?

Gregory Wiener (NPI 1811099534) received approximately $78K in total Medicare Part B payments, serving 305 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1811099534

Gregory WienerM.D

GastroenterologyChula Vista, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

664

Unique beneficiaries

—

Total services

759

Distinct HCPCS

Medicare payment

$70K

Peer benchmark

Total Medicare services vs. 1,398 Gastroenterology providers in CA — above median (cohort median 750).

PRESCRIBING · PART D · 2024

Total Rx claims

1,019

Beneficiaries

—

Total drug cost

$185K

Distinct drugs

Brand share

36.4%

Top prescribed drugs

Esomeprazole Magnesium232 claims

Sucralfate204 claims

Pantoprazole Sodium126 claims

Sodium, Potassium,mag Sulfates85 claims

Peg3350/Sod Sulf,bicarb,cl/Kcl76 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$43

Payment records

By payment type

Food and Beverage$43

Top paying entities

Food and Beverage$43

REFERRAL NETWORK

Where Gregory Wiener'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
Unilab Corporation Clinical Laboratory · West Hills, CA	115	278
SHARP CHULA VISTA MEDICAL CENTER	59	136
Cesar Pena Internal Medicine · Chula Vista, CA	57	371
Endoscopy Center Of Chula Vista A Corporation Ambulatory Surgical Center · Chula Vista, CA	52	108
CENTRO DE SALUD DE LA COMUNIDAD DE SAN YSIDRO, INC.	37	64
Trevor Nelson Interventional Radiology · La Jolla, CA	33	95
Harold Pimenta Interventional Cardiology · La Jolla, CA	28	101
Otay Lakes Surgery Center, Llc Ambulatory Surgical Center · Chula Vista, CA	26	64
American Medical Response Ambulance Service, Inc. Ambulance Service Provider · San Diego, CA	25	58
Path Md, Inc. Clinical Laboratory · Los Angeles, CA	24	50
HARRISON, NANCY	20	49
CALDERON, JUAN	20	44

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