IOANNIS KARKATZOUNIS MD
NPI 1639335235
Hospitalist in Oshkosh, WI

Q: What is Ioannis Karkatzounis's NPI number?

The NPI number for Ioannis Karkatzounis is 1639335235. It was assigned to this individual provider in the NPPES registry on August 3, 2008.

Q: What is Ioannis Karkatzounis's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Active since August 03, 2008PECOS EnrolledAccepts Medicare Assignment

855 N WESTHAVEN DR, OSHKOSH, WI 54904(920) 303-8700(920) 456-7601 Get Directions Write a Review

NPPES record last updated: September 26, 2024. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Sep 26, 2024, Sep 3, 2024, Nov 29, 2022 (3 updates tracked since 2022).

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About Ioannis Karkatzounis Md NPPES

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

IOANNIS KARKATZOUNIS MD (NPI 1639335235) is an individual hospitalist provider in Oshkosh, Wisconsin, licensed in Illinois (036-120385) and active in the NPI registry since August 2008. He is enrolled in Medicare PECOS, is affiliated with Osf Sacred Heart Medical Center, and is a graduate of Other (1999).

NPPES Registry Identity

NPI1639335235

Entity TypeIndividualMale

Primary Taxonomy208M00000X

Provider Legal NameIOANNIS KARKATZOUNISCredential: MD

Location Address855 N WESTHAVEN DROshkosh, WI 54904-7668

Mailing Address4 Stonebrook CtBloomington, IL 61704-4156 · (312) 730-8637

Phone(920) 303-8700

Fax(920) 456-7601

Sole ProprietorYes

Medical School CMSOtherGraduated 1999

Enumeration DateAugust 3, 2008

Last NPPES UpdateSeptember 26, 20243 updates tracked since enumeration

NPPES CertifiedSeptember 26, 2024

✔ NPI 1639335235 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians

Taxonomy Code208M00000X

Licenses✔ Licensed in IL · 036-120385✔ Licensed in WI · 2960

Definition

Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

Also ListedInternal MedicineTaxonomy 207R00000X · License 2960 (WI), 036120385 (IL)

855 N WESTHAVEN DR, Oshkosh, WI 54904

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Other Identifiers 1

Medicaid100004698WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Aspirus Health Plan, CareSource (Common Ground Healthcare), Medica.Insurance ›

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

Ioannis Karkatzounis Md 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 ID9032263835

PECOS Enrollment IDI20090813000167, I20240814000612, I20250317002957

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 6

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 straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

357 services130 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.

291 services125 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

121 services115 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.

89 services87 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.

54 services53 patients

Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221

Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.

28 services27 patients

Hospital Affiliations CMS Care Compare 5

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

Osf Sacred Heart Medical Center

Acute Care Hospitals · Danville, IL

1/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140093

Location812 N Logan AveDanville, IL 61832 · Vermilion County

Emergency services Birthing friendly

Memorial Hospital Of Carbondale

Acute Care Hospitals · Carbondale, IL

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140164

Location405 W JacksonCarbondale, IL 62901 · Jackson County

Emergency services Birthing friendly

Crossroads Community Hospital

Acute Care Hospitals · Mount Vernon, IL

OwnershipProprietary

CMS Certification Number140294

Location8 Doctors Park RdMount Vernon, IL 62864 · Jefferson County

Emergency services

Genesis Medical Center-Davenport

Acute Care Hospitals · Davenport, IA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number160033

Location1227 East Rusholme StreetDavenport, IA 52803 · Scott County

Emergency services Birthing friendly

Beloit Health System

Acute Care Hospitals · Beloit, WI

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520100

Location1969 W Hart RdBeloit, WI 53511 · Rock County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 54904 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

$123.69 typical visit price

range $53.90 – $163.24

Typical copayment $30.92 (range $13.47 – $40.81)

Most-billed visit code 99204

Established Patient

$95.41 typical visit price

range $17.40 – $133.76

Typical copayment $23.85 (range $4.35 – $33.44)

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.

Referred Medical Equipment & Supplies CMS DME claims 17

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

Tubing with integrated heating element for use with positive airway pressure device A4604