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
- 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
- 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
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
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 Valparaiso Internal Medicine Physician, average services per provider: 167. This provider delivers 13× the peer median.Open Payments
Industry payments received
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
Medicare Part D · 2023
Top prescriptions
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
Frequently asked questions
What is Dr. Mazen Zaitoon's medical specialty?
Dr. Mazen Zaitoon practices Internal Medicine Physician in Valparaiso, IN.
Where does Dr. Mazen Zaitoon practice?
Dr. Mazen Zaitoon practices at 85 East United States 6 Frontage, Valparaiso, IN 46383. Office phone: 2199838300.
What is Dr. Mazen Zaitoon's NPI?
Dr. Mazen Zaitoon's National Provider Identifier (NPI) is 1013280965, issued by NPPES.
Does Dr. Mazen Zaitoon accept Medicare assignment?
Yes. Dr. Mazen Zaitoon accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mazen Zaitoon commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hospital discharge day management (HCPCS 99239); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.