Doctor profile · Federal record

Dr. James Maserejian, MD

Internal Medicine Physician (CMS: Internal Medicine) · Evansville, IN

  • NPI 1326080037
  • Accepts Medicare
  • MIPS 94.7 / 100 · 2023
  • 31 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
3700 Washington Ave
Evansville, IN 477140541
(812) 485-7040
fax (812) 485-7042
Mailing address
Po Box 359
Evansville, IN 477030359

Credentials & registration

NPPES · NUCC
NPI registered
June 2006 — 20 yrs on file
Profile last updated
November 13, 2009
Year of graduation
1995 — 31 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
Indiana #01051918A
Medicaid (2)
IN #200260050 · IN #100180890G

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1326080037. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
712
Distinct HCPCS
6
Medicare allowed
$72,130
HCPCS Description Services Patients Avg allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 289 144 $110
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 255 120 $73
99239 Hospital discharge day management, more than 30 minutes 90 88 $105
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 40 40 $163
99291 Critical care, first 30-74 minutes 24 19 $199
99238 Hospital discharge day management, 30 minutes or less 14 14 $76

In context: peer comparison

Among 21 peers in Evansville Internal Medicine Physician, average services per provider: 108. This provider delivers 6.6× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
14
Patients
13
Total drug cost
$129
Drug Type Claims Patients Total cost
Pantoprazole Sodium Generic 14 13 $129

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. James Maserejian's medical specialty?
Dr. James Maserejian practices Internal Medicine Physician in Evansville, IN.
Where does Dr. James Maserejian practice?
Dr. James Maserejian practices at 3700 Washington Ave, Evansville, IN 477140541. Office phone: 8124857040.
What is Dr. James Maserejian's NPI?
Dr. James Maserejian's National Provider Identifier (NPI) is 1326080037, issued by NPPES.
Does Dr. James Maserejian accept Medicare assignment?
Yes. Dr. James Maserejian accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. James Maserejian commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.