Doctor profile · Federal record

Dr. Tess Petersen

Student in an Organized Health Care Education/Training Program (CMS: Gastroenterology) · Wynnewood, PA

  • NPI 1235691486
  • Accepts Medicare
  • 7 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
100 E Lancaster Ave
Wynnewood, PA 190963450
(484) 476-6424

Credentials & registration

NPPES · NUCC
NPI registered
April 2019 — 7 yrs on file
Profile last updated
March 9, 2026
Year of graduation
2019 — 7 yrs since
Specialty taxonomy
390200000X — NUCC code
State license (1)
Pennsylvania #490438

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1235691486. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$110
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
E.R. Squibb & Sons, L.L.C. 1 $110.16

By nature of payment

Food and Beverage
$110

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
62
Patients
29
Total drug cost
$917
Drug Type Claims Patients Total cost
Omeprazole Generic 22 12 $298
Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) Brand 17 17 $285
Loperamide (Loperamide Hcl) Brand 12 0 $164
Peg-3350 And Electrolytes (Peg3350/Sod Sulf,bicarb,cl/Kcl) Brand 11 0 $170

Frequently asked questions

Auto-generated from federal data
What is Dr. Tess Petersen's medical specialty?
Dr. Tess Petersen practices Student in an Organized Health Care Education/Training Program in Wynnewood, PA.
Where does Dr. Tess Petersen practice?
Dr. Tess Petersen practices at 100 E Lancaster Ave, Wynnewood, PA 190963450. Office phone: 4844766424.
What is Dr. Tess Petersen's NPI?
Dr. Tess Petersen's National Provider Identifier (NPI) is 1235691486, issued by NPPES.
Does Dr. Tess Petersen accept Medicare assignment?
Yes. Dr. Tess Petersen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.