What is Haig Najarian's specialty?

Haig Najarian (NPI 1912010257) is a Medicare-billing provider whose primary specialty is Gastroenterology in Orange, CA.

Where does Haig Najarian practice?

Haig Najarian practices in Orange, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1912010257.

How much does Medicare pay Haig Najarian?

Haig Najarian (NPI 1912010257) received approximately $154K in total Medicare Part B payments, serving 439 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1912010257

Haig NajarianMD

GastroenterologyOrange, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

980

Unique beneficiaries

—

Total services

2,248

Distinct HCPCS

Medicare payment

$143K

Peer benchmark

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

PRESCRIBING · PART D · 2024

Total Rx claims

893

Beneficiaries

—

Total drug cost

$229K

Distinct drugs

Brand share

12.2%

Top prescribed drugs

Omeprazole316 claims

Pantoprazole Sodium140 claims

Famotidine79 claims

Linaclotide41 claims

Lansoprazole41 claims

QUALITY · MIPS · 2024

Final MIPS score

100.0

Quality

20.9

Cost

75.6

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

1.05%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$2K

Payment records

By payment type

Food and Beverage$2K

Top paying entities

Food and Beverage$2K

REFERRAL NETWORK

Where Haig Najarian'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). 15 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Unilab Corporation Clinical Laboratory · West Hills, CA	92	342
PATHOLOGY, INC.	76	90
Peter Piampiano Diagnostic Radiology · Knoxville, TN	30	67
Hieu Truong Diagnostic Radiology · Orange, CA	27	61
Craig Ennis Internal Medicine · Clarksville, TN	26	52
Kirk Ohanian Diagnostic Radiology · Fort Worth, TX	23	44
Dan Vu Diagnostic Radiology · Orange, CA	22	38
NAKAMOTO, STANLEY	20	24
Richard Cho Interventional Radiology · Orange, CA	15	35
Mark Masotto Diagnostic Radiology · Orange, CA	14	29
Shu Yuan Liao Pathology · Orange, CA	13	37
Jason Caberto Internal Medicine · Orange, CA	13	37

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