James Maserejian, MD
Internal Medicine Physician · Evansville, IN
James Maserejian, MD is an internal medicine physician with a practice address in Evansville, Indiana, and NPI 1326080037, issued on Jun 10, 2006. Check the license (Indiana 01051918A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- James Maserejian
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 01051918A IN
Self-reported in NPPES; status is on the state search - Practice location
- 3700 Washington Ave, Evansville, IN 47714
- Phone
- (812) 485-7040
- Enumerated
- Jun 10, 2006
- Record last updated
- Nov 13, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (812) 485-7042
- Medicaid IDs
- 200260050 IN
100180890G IN - Medicare enrollment
- Enrolled (PECOS I20100419000803); accepts Medicare assignment
- Medical or professional school
- University Of Massachusetts Medical School, 1995
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,109 in Indiana → Look up another NPI →
Also registered at 3700 Washington Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify James Maserejian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 01051918ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average internal medicine physician in 2024
288 Medicare Part D claims for 120 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Pantoprazole Sodium22 claims
- Cephalexin13 claims
- Atorvastatin Calcium12 claims
- Clopidogrel12 claims
- Eliquis12 claims
- Prednisone12 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): 95.6 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).
Bills Medicare through one group practice
- St Marys Medical Group LLCEvansville, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Maserejian among 2,109 internal medicine physician records in Indiana
James Maserejian, MD is one of 2,109 internal medicine physician records with a practice address in Indiana. 85% 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 13% of them.
- NPI issued2006 · 13% of these records are older, 54% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1995 · median 2005 among the 1,448 with a school on file
- Record last updated2009 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
97 internal medicine physician records list a practice address in Evansville
They are 97 of the 4,352 NPPES records with a practice address in Evansville, and 2,109 internal medicine physician records in Indiana.
All 2,109 in Indiana → Every provider in Evansville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Michael Allen, MDEvansville, IN 477141366429714
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- Donald Elshoff, MDEvansville, IN 477141205813698
- Nigel Islam, MDEvansville, IN 477141942240890
- Stephen Koewler, MDEvansville, IN 477141467439844
- Bryan Laura, MDEvansville, IN 477141346227725
- Divya Patel, MDEvansville, IN 477141184678419
- John Polin, MDEvansville, IN 477141912984295
Common questions
What is James Maserejian, MD's NPI number?
James Maserejian, MD's National Provider Identifier (NPI) is 1326080037, issued on Jun 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James Maserejian, MD located?
The NPPES record lists a practice address at 3700 Washington Ave, Evansville, IN, 47714. Phone: (812) 485-7040. Providers update this record themselves, so call before visiting.
How can I verify James Maserejian, MD's license?
NPPES lists Indiana license number 01051918A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does James Maserejian, MD prescribe under Medicare Part D?
In 2024, James Maserejian, MD had 288 Medicare Part D claims for 120 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is James Maserejian, MD's MIPS final score?
The 2023 MIPS final score is 95.6 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.