Doctor profile · Federal record

Dr. Stephanie Messmer, PA-C

Physician Assistant · Indianapolis, IN

  • NPI 1881219475
  • Accepts Medicare
  • 5 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
7400 N Shadeland Ave Ste 100
Indianapolis, IN 462502076
(317) 621-6900
Additional location
8051 S Emerson Ave Ste 200
Indianapolis, IN 462378632
(317) 865-2955
Mailing address
6626 E 75Th St Ste 500
Indianapolis, IN 462502890

Credentials & registration

NPPES · NUCC
NPI registered
June 2020 — 6 yrs on file
Profile last updated
March 6, 2024
Year of graduation
2021 — 5 yrs since
Specialty taxonomy
363A00000X — NUCC code
State license (1)
Indiana #10003267A
Medicaid
IN #300052056

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1881219475. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
226
Distinct HCPCS
5
Medicare allowed
$18,646
HCPCS Description Services Patients Avg allowed
99213 Established patient office or other outpatient visit, 20-29 minutes 100 97 $71
99214 Established patient office or other outpatient visit, 30-39 minutes 75 74 $99
99204 New patient office or other outpatient visit, 45-59 minutes 19 19 $132
99231 Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 19 16 $39
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 13 11 $63

In context: peer comparison

Among 167 peers in Indianapolis Physician Assistant, average services per provider: 75. This provider delivers 3.0× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$770
Transactions
23
Manufacturers
7
Payer (manufacturer) Industry Txns Amount
Madrigal Pharmaceuticals 11 $402.80
Gilead Sciences, INC. 6 $141.27
Phathom Pharmaceuticals, INC. 1 $124.26
Lilly USA, LLC 2 $58.49
Takeda Pharmaceuticals U.S.A., INC. 1 $15.47
Pfizer INC. 1 $14.16
Celgene Corporation 1 $13.26

By nature of payment

Food and Beverage
$770

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
728
Patients
213
Total drug cost
$113,087
Drug Type Claims Patients Total cost
Pantoprazole Sodium Generic 125 49 $2,007
Omeprazole Generic 107 40 $2,684
Famotidine Generic 99 38 $1,869
Dicyclomine Hcl Generic 89 35 $2,143
Colestipol Hcl Generic 78 38 $8,981
Linzess (Linaclotide) Brand 43 13 $43,285
Esomeprazole Magnesium Generic 27 0 $2,243
Lansoprazole Generic 27 0 $873
Sulfasalazine Generic 25 0 $1,101
Lubiprostone Generic 22 0 $7,024

Frequently asked questions

Auto-generated from federal data
What is Dr. Stephanie Messmer's medical specialty?
Dr. Stephanie Messmer practices Physician Assistant in Indianapolis, IN.
Where does Dr. Stephanie Messmer practice?
Dr. Stephanie Messmer practices at 7400 N Shadeland Ave Ste 100, Indianapolis, IN 462502076. Office phone: 3176216900.
What is Dr. Stephanie Messmer's NPI?
Dr. Stephanie Messmer's National Provider Identifier (NPI) is 1881219475, issued by NPPES.
Does Dr. Stephanie Messmer accept Medicare assignment?
Yes. Dr. Stephanie Messmer accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Stephanie Messmer commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.