John Koslosky II
- Hospital affiliations
- 1
- Industry payments
- $21
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2023
- Practice address
- 900 Rand Rd, Des Plaines, IL 60016
- Practice phone
- Call (847) 324-3090
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ibji Oak, LLC
Des Plaines, Illinois
Find John Koslosky's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
John Koslosky II is a physician assistant in Des Plaines, Illinois
John Koslosky practices at Ibji Oak, LLC in Des Plaines, Illinois.
John Koslosky's NPI, 1932895364, was assigned on April 18, 2023.
- NPI
- 1932895364NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0143729475
- NPI enumeration date
- April 18, 2023
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (847) 324-3090
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 27
- Medical school graduation
- 2025
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
John Koslosky II practices at Ibji Oak, LLC in Des Plaines, Illinois
John Koslosky's primary practice is Ibji Oak, LLC, at 900 Rand Rd, Des Plaines, IL 60016 in Cook County. The practice phone is (847) 324-3090.
- Ibji Oak, LLC900 Rand Rd, Des Plaines, IL 60016 · Cook CountyPhone(847) 324-3090
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
John Koslosky II is affiliated with 3 sites of care and 1 medical group
John Koslosky's primary practice is Ibji Oak, LLC in Des Plaines, Illinois. John Koslosky is also affiliated with Advocate Good Shepherd Hospital. The medical group on file is Illinois Bone & Joint Institute. Dmand AI also links John Koslosky to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at John Koslosky II's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Koslosky practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ibji Oak, LLC | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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John Koslosky II is one of 4,299 physician assistants in Illinois
Physician assistant is John Koslosky's primary specialty in the NPI Registry, under taxonomy code 363A00000X. John Koslosky has a license on file in Illinois.
Specialties and state licenses
- Physician assistant, Illinois
Physician assistants near John Koslosky
Counts of physician assistants with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
John Koslosky II's patients have a median age of 70
Across all payers, Dmand AI patient panel data puts John Koslosky's median patient age at 70, with 65% women.
John Koslosky's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women65%
- Men34%
Source: Dmand AI Patient Panel Data
How John Koslosky II takes part in Medicare
John Koslosky accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
John Koslosky II received $21 in industry payments in 2025
CMS Open Payments shows 1 general payment to John Koslosky from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Orthofix Medical, Inc. paid the most, $21.
Companies that paid John Koslosky the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for John Koslosky II's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about John Koslosky II
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is John Koslosky II's NPI number?
John Koslosky II's NPI number is 1932895364. It was assigned on April 18, 2023, and it is active in the NPI Registry.
What does John Koslosky II specialize in?
John Koslosky II is a physician assistant in Des Plaines, Illinois. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does John Koslosky II practice?
John Koslosky practices at 900 Rand Rd, Des Plaines, IL 60016. John Koslosky's primary practice is Ibji Oak, LLC in Des Plaines, Illinois. Dmand AI also links John Koslosky to 1 group practice or clinic.
What is John Koslosky II's office phone number?
The practice phone on file for John Koslosky is (847) 324-3090.
Which hospitals is John Koslosky II affiliated with?
John Koslosky is affiliated with Advocate Good Shepherd Hospital.
What medical group is John Koslosky II part of?
John Koslosky is linked to Illinois Bone & Joint Institute.
Does John Koslosky II accept Medicare?
Yes. CMS lists John Koslosky as accepting Medicare assignment.
Has John Koslosky II received payments from drug or device companies?
CMS Open Payments shows $21 in general payments to John Koslosky from 1 company from 2025 to 2025. The largest total came from Orthofix Medical, Inc.
How long has John Koslosky II been practicing?
John Koslosky graduated from medical school in 2025, 1 years ago.
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