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DR. MAZEN ZAITOON M.D.
NPI 1013280965
Internal Medicine in Valparaiso, IN

Active since February 22, 2012PECOS EnrolledAccepts Medicare Assignment
58.85/100
CMS Quality Rating
85 EAST UNITED STATES 6 FRONTAGE, VALPARAISO, IN 46383(219) 983-8300 Get Directions Write a Review

NPPES record last updated: October 5, 2015. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Mazen Zaitoon M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MAZEN ZAITOON M.D. (NPI 1013280965) is an individual internal medicine provider in Valparaiso, Indiana, licensed in Indiana (01075647A) and active in the NPI registry since February 2012. He is enrolled in Medicare PECOS, is affiliated with Saint Rose Dominican Hospitals - Siena Campus, and is a graduate of Other (2011).

NPPES Registry Identity

NPI1013280965
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. MAZEN ZAITOONCredential: M.D.
Location Address85 EAST UNITED STATES 6 FRONTAGEValparaiso, IN 46383
Mailing Address130 Saint Ives DrGreensburg, PA 15601-5851 · (724) 433-6779
Phone(219) 983-8300
Sole ProprietorNo
Medical School CMSOtherGraduated 2011
Enumeration DateFebruary 22, 2012
Last NPPES UpdateOctober 5, 2015
✔ NPI 1013280965 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in IN · 01075647A
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
85 EAST UNITED STATES 6 FRONTAGE, Valparaiso, IN 46383
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Mazen Zaitoon M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID345557815
PECOS Enrollment IDI20190820000065
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
1,122 services579 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
631 services605 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
576 services282 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
521 services503 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
42 services42 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Saint Rose Dominican Hospitals - Siena Campus

Acute Care Hospitals · Henderson, NV
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number290045
Location3001 St Rose ParkwayHenderson, NV 89052 · Clark County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 46383 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$122.49 typical visit price
range $53.07 – $161.76
Typical copayment $30.62 (range $13.26 – $40.44)
Most-billed visit code 99204
Established Patient
$94.22 typical visit price
range $16.93 – $132.22
Typical copayment $23.55 (range $4.23 – $33.05)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

58.85/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality39.4
Improvement Activities40
Cost49.45

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
2 suppliers47 claims47 services$16.46 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
3 suppliers56 claims56 services$74.53 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mazen Zaitoon's NPI number?

The NPI number for Mazen Zaitoon is 1013280965. It was assigned to this individual provider in the NPPES registry on February 22, 2012.

Where is Mazen Zaitoon located?

Mazen Zaitoon practices at 85 East United States 6 Frontage, Valparaiso, IN 46383. The listed phone number is (219) 983-8300.

What is Mazen Zaitoon's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Mazen Zaitoon enrolled in Medicare?

Yes. Mazen Zaitoon is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Mazen Zaitoon affiliated with any hospitals?

According to CMS data, Mazen Zaitoon is affiliated with Saint Rose Dominican Hospitals - Siena Campus.

When was this NPI record last updated?

The NPPES record for Mazen Zaitoon was last updated on October 5, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.