Doctor profile · Federal record

Dr. Jacob Obholz, DO

Internal Medicine Physician · Mason City, IA

  • NPI 1689298473
  • 6 yrs on file
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1010 4Th St Sw Ste 305
Mason City, IA 504012856
(641) 428-5700
fax (641) 428-2515
Mailing address
1000 4Th St Sw
Mason City, IA 504012800

Credentials & registration

NPPES · NUCC
NPI registered
June 2020 — 6 yrs on file
Profile last updated
June 30, 2023
Specialty taxonomy
207R00000X — NUCC code
State license (1)
Iowa #R-11930

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1689298473. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$41
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
Zoll Services LLC (A/K/A Zoll LifeCor Corp) 1 $41.28

By nature of payment

Food and Beverage
$41

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
184
Patients
26
Total drug cost
$13,333
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 28 14 $493
Lisinopril Generic 24 12 $268
Omeprazole Generic 19 0 $316
Losartan Potassium Generic 18 0 $286
Carvedilol Generic 17 0 $138
Clopidogrel (Clopidogrel Bisulfate) Brand 15 0 $186
Levothyroxine Sodium Generic 15 0 $176
Amlodipine Besylate Generic 13 0 $57
Escitalopram Oxalate Generic 13 0 $271
Gabapentin Generic 11 0 $272

Frequently asked questions

Auto-generated from federal data
What is Dr. Jacob Obholz's medical specialty?
Dr. Jacob Obholz practices Internal Medicine Physician in Mason City, IA.
Where does Dr. Jacob Obholz practice?
Dr. Jacob Obholz practices at 1010 4Th St Sw Ste 305, Mason City, IA 504012856. Office phone: 6414285700.
What is Dr. Jacob Obholz's NPI?
Dr. Jacob Obholz's National Provider Identifier (NPI) is 1689298473, issued by NPPES.