Jim Amerian, M.D.
Gastroenterology Physician · Tarzana, CA
Jim Amerian, M.D. is a gastroenterology physician with a practice address in Tarzana, California, and NPI 1366400194, issued on May 2, 2006. Check the license (California G44918, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jim Amerian
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- G44918 CA
Self-reported in NPPES; status is on the state search - Practice location
- 18425 Burbank Blvd, Tarzana, CA 91356
- Phone
- (818) 708-6000
- Enumerated
- May 2, 2006
- Record last updated
- Oct 10, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (818) 708-6009
- Medicaid ID
- ZZZ70039Z CA
- Medicare enrollment
- Enrolled (PECOS I20101116001051); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 1980
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 18425 Burbank Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sharis Ayazjoo, LMFT, M.S.Marriage & Family Therapist1841725876
- Jeffrey Birns, M.D.Pediatric Otolaryngology Physician1043278062
- Alan Bricklin, M.D.Specialist1073539102
- Cesar Chavarria, M.D.Pediatric Critical Care Medicine Physician1609803212
- Elisa EspinozaClinical Social Worker1972231264
- Sheldon Getzug, M.D.Gastroenterology Physician1750348785
Verify Jim Amerian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G44918Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average gastroenterology physician in 2024
209 Medicare Part D claims for 84 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Pantoprazole Sodium61 claims
- Famotidine27 claims
- Sutab23 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 practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $707.35
29 payments; by number, the most common kind was food and beverage; the largest payer was Regeneron Healthcare Solutions, 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
- United Medical DoctorsIrvine, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jim Amerian among 2,140 gastroenterology physician records in California
Jim Amerian, M.D. is one of 2,140 gastroenterology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 48% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1980 · median 2002 among the 1,538 with a school on file
- Record last updated2012 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Tarzana → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Neil Fagen, MDTarzana, CA 913561700878428
- Sheldon Getzug, M.D.Tarzana, CA 913561750348785
- Maurice Gourdji, M.D.Tarzana, CA 913561699751586
- Kenneth Hepps, MDTarzana, CA 913561154313880
- Lucien Jacobs, M.D.Tarzana, CA 913561639155658
- Lori Kam, M.D.Tarzana, CA 913561144305244
- Irving Klasky, M.D.Tarzana, CA 913561184681546
- Michael Madievsky, MDTarzana, CA 913561982696613
Common questions
What is Jim Amerian, M.D.'s NPI number?
Jim Amerian, M.D.'s National Provider Identifier (NPI) is 1366400194, issued on May 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jim Amerian, M.D. located?
The NPPES record lists a practice address at 18425 Burbank Blvd, Tarzana, CA, 91356. Phone: (818) 708-6000. Providers update this record themselves, so call before visiting.
How can I verify Jim Amerian, M.D.'s license?
NPPES lists California license number G44918, 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 Jim Amerian, M.D. prescribe under Medicare Part D?
In 2024, Jim Amerian, M.D. had 209 Medicare Part D claims for 84 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Jim Amerian, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. 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.