John J. Karl, FNP-C
- Part D claims, 2024
- 60
- Hospital affiliations
- 2
- Medical groups
- 2
- State licenses
- 2
- Year NPI issued
- 2007
- Practice address
- 20201 Crawford Ave, Olympia Fields, IL 60461
- Practice phone
- Call (708) 756-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Prime Healthcare Olympia Fields
Olympia Fields, Illinois
Find John Karl'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 J. Karl is a nurse practitioner in Olympia Fields, Illinois
John Karl practices at Prime Healthcare Olympia Fields in Olympia Fields, Illinois.
John Karl's NPI, 1487701728, was assigned on January 5, 2007. John Karl holds Illinois license 209019289.
- NPI
- 1487701728NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3678815925
- NPI enumeration date
- January 5, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (708) 756-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
John J. Karl practices at Prime Healthcare Olympia Fields in Olympia Fields, Illinois
John Karl's primary practice is Prime Healthcare Olympia Fields, at 20201 Crawford Ave, Olympia Fields, IL 60461 in Cook County. The practice phone is (708) 756-1000.
- Prime Healthcare Olympia Fields20201 Crawford Ave, Olympia Fields, IL 60461 · Cook CountyPhone(708) 756-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
John J. Karl is affiliated with 5 sites of care and 2 medical groups
John Karl's primary practice is Prime Healthcare Olympia Fields in Olympia Fields, Illinois. John Karl is also affiliated with Olympia Fields Hospital. The medical group on file is Specialty Physicians of Illinois. Dmand AI also links John Karl to 1 more hospital, 2 group practices and clinics and 1 medical group, each 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 J. Karl's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Karl practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Prime Healthcare Olympia Fields | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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John J. Karl is one of 4,254 nurse practitioners in Illinois
Nurse practitioner is John Karl's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Dmand AI has John Karl's licenses on file in 2 states: Illinois and Indiana.
Specialties and state licenses
- Nurse practitioner, IllinoisPrimary
- Indiana license
Nurse practitioners near John Karl
Counts of nurse practitioners 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 J. Karl's patients have a median age of 53
Across all payers, Dmand AI patient panel data puts John Karl's median patient age at 53, with 81% women.
John Karl's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
Patient panel by sex, all payers
- Women81%
- Men17%
Source: Dmand AI Patient Panel Data
John J. Karl wrote 60 Medicare Part D claims in 2024
In 2024, John Karl wrote 60 Medicare Part D claims for 16 patients. 100% of them were for generic drugs.
Drug classes CMS tracks in John Karl's Part D claims, 2024
- Opioids20%12 of 60 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How John J. Karl takes part in Medicare
John Karl 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)
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Sources for John J. Karl'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 |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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 J. Karl
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 J. Karl's NPI number?
John J. Karl's NPI number is 1487701728. It was assigned on January 5, 2007, and it is active in the NPI Registry.
What does John J. Karl specialize in?
John J. Karl is a nurse practitioner in Olympia Fields, Illinois. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does John J. Karl practice?
John Karl practices at 20201 Crawford Ave, Olympia Fields, IL 60461. John Karl's primary practice is Prime Healthcare Olympia Fields in Olympia Fields, Illinois. Dmand AI also links John Karl to 1 hospital, 2 group practices and clinics and 1 medical group.
What is John J. Karl's office phone number?
The practice phone on file for John Karl is (708) 756-1000.
What is John J. Karl's medical license number?
John Karl holds Illinois license 209019289, one of the licenses on file in 2 states.
Which states has John J. Karl been licensed in?
Dmand AI has state licenses on file for John Karl in Illinois and Indiana.
Which hospitals is John J. Karl affiliated with?
John Karl is affiliated with Olympia Fields Hospital. Dmand AI links John Karl to 1 more hospital.
What medical group is John J. Karl part of?
John Karl is linked to Specialty Physicians of Illinois. Dmand AI links John Karl to 1 more medical group.
Does John J. Karl accept Medicare?
Yes. CMS lists John Karl as accepting Medicare assignment.
How long has John J. Karl been practicing?
John Karl graduated from medical school in 2018, 8 years ago.
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