Haig Najarian, MD
Gastroenterology Physician · Orange, CA
Haig Najarian, MD is a gastroenterology physician with a practice address in Orange, California, and NPI 1912010257, issued on Aug 17, 2006. Check the license (California G77745, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Haig Najarian
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- G77745 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1010 W LA Veta, Orange, CA 92868
- Phone
- (714) 835-7700
- Enumerated
- Aug 17, 2006
- Record last updated
- Oct 31, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (714) 835-8144
- Medicaid ID
- 00G777450 CA
- Medicare enrollment
- Enrolled (PECOS I20081224000220); accepts Medicare assignment
- Medical or professional school
- Un Of California, Irvine, College Of Medicine, 1992
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Verify Haig Najarian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G77745Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
32% more Medicare Part D claims than the average gastroenterology physician in 2024
1,069 Medicare Part D claims for 348 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Omeprazole316 claims
- Pantoprazole Sodium140 claims
- Famotidine79 claims
- Lansoprazole41 claims
- Linzess41 claims
- Sod Sulf-Potass Sulf-Mag Sulf38 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,284.43
114 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Genesis Healthcare Partners PCOrange, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
Other gastroenterology physician records in California
- David Aarons, MDLodi, CA1619081379
- Constante Abaya, MDOxnard, CA1003918459
- Sadeea Abbasi, M.D., PH.D.Los Angeles, CA1366713513
- Basim Abdelkarim, MDUpland, CA1932217544
- Homan Abdollahzadeh, MDPalm Springs, CA1184634826
- John Abdulian, M.D.Fresno, CA1437114113
- Hussein Abidali, DORancho Cucamonga, CA1205274768
- Alaa Abousaif, MDOrange, CA1235124108
- Donald Abrahm, M.D.Newport Beach, CA1215022405
- Maria Abreu, M.D.West Hollywood, CA1598793374
Common questions
What is Haig Najarian, MD's NPI number?
Haig Najarian, MD's National Provider Identifier (NPI) is 1912010257, issued on Aug 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Haig Najarian, MD located?
The NPPES record lists a practice address at 1010 W LA Veta, Orange, CA, 92868. Phone: (714) 835-7700. Providers update this record themselves, so call before visiting.
How can I verify Haig Najarian, MD's license?
NPPES lists California license number G77745, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Haig Najarian, MD prescribe under Medicare Part D?
In 2024, Haig Najarian, MD had 1,069 Medicare Part D claims for 348 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Haig Najarian, MD's MIPS final score?
The 2023 MIPS final score is 100 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.