Doctor profile · Federal record

Dr. Jacob Groenendyk, MD

Internal Medicine Physician · Chicago, IL

  • NPI 1639638505
  • 7 yrs on file
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
251 E Huron St
Chicago, IL 606113055
(312) 926-2000

Credentials & registration

NPPES · NUCC
NPI registered
March 2019 — 7 yrs on file
Profile last updated
June 24, 2019
Specialty taxonomy
207R00000X — NUCC code
State license (1)
Illinois #125.073852

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1639638505. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$877
Transactions
14
Manufacturers
5
Payer (manufacturer) Industry Txns Amount
Biotronik INC. 4 $437.87
Abbott Laboratories 7 $355.40
Janssen Pharmaceuticals, INC 1 $33.52
Alnylam Pharmaceuticals INC. 1 $26.10
Lantheus Medical Imaging, INC. 1 $23.75

By nature of payment

Food and Beverage
$623
Education
$253

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
34
Patients
0
Total drug cost
$1,030
Drug Type Claims Patients Total cost
Metoprolol Succinate Generic 20 0 $782
Rosuvastatin Calcium Generic 14 0 $249

Frequently asked questions

Auto-generated from federal data
What is Dr. Jacob Groenendyk's medical specialty?
Dr. Jacob Groenendyk practices Internal Medicine Physician in Chicago, IL.
Where does Dr. Jacob Groenendyk practice?
Dr. Jacob Groenendyk practices at 251 E Huron St, Chicago, IL 606113055. Office phone: 3129262000.
What is Dr. Jacob Groenendyk's NPI?
Dr. Jacob Groenendyk's National Provider Identifier (NPI) is 1639638505, issued by NPPES.