Doctor profile · Federal record

Dr. MAZEN ZAITOON, M.D.

Internal Medicine Physician (CMS: INTERNAL MEDICINE) · Student in an Organized Health Care Education/Training Program · VALPARAISO, IN

  • NPI 1013280965
  • Accepts Medicare
  • MIPS 51.5 / 100 · 2023
  • 15 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
85 EAST UNITED STATES 6 FRONTAGE
VALPARAISO, IN 46383
(219) 983-8300
Mailing address
130 SAINT IVES DR
GREENSBURG, PA 156015851

Credentials & registration

NPPES · NUCC
NPI registered
February 2012 — 14 yrs on file
Profile last updated
October 5, 2015
Year of graduation
2011 — 15 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
Indiana #01075647A

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1013280965. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
2,162
Distinct HCPCS
6
Medicare allowed
$257,806
HCPCS Description Services Patients Avg allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 1,052 452 $118
99239 Hospital discharge day management, more than 30 minutes 390 376 $113
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 349 171 $78
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 335 328 $172
99497 Advance care planning, first 30 minutes 20 20 $75
99291 Critical care, first 30-74 minutes 16 16 $212

In context: peer comparison

Among 10 peers in this city , average services per provider: 167. This provider delivers 13× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$222
Transactions
3
Manufacturers
3
Payer (manufacturer) Industry Txns Amount
Abbott Laboratories 1 $99.49
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) 1 $99.49
Gilead Sciences, Inc. 1 $22.65

By nature of payment

Food and Beverage
$222

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
142
Patients
138
Total drug cost
$1,296
Drug Type Claims Patients Total cost
Cefdinir Generic 24 24 $218
Pantoprazole Sodium Generic 21 21 $217
Prednisone Generic 21 19 $116
Doxycycline Hyclate Generic 18 17 $144
Atorvastatin Calcium Generic 17 17 $81
Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) Brand 15 15 $99
Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) Brand 14 14 $148
Amiodarone Hcl Generic 12 11 $272

Hospital affiliations

CMS Hospital Compare