Dr. Karl Michael Napekoski, MD
- Medicare services, 2024
- 10,166
- Medicare patients, 2024
- 5,281
- Hospital affiliations
- 5
- Industry payments
- $1,572
- Medical groups
- 9
- Practice address
- 3815 Highland Avenue, Downers Grove, IL 60515
- Practice phone
- Call (630) 275-5900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Napekoski'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.
Dr. Karl Michael Napekoski is a pathologist in Downers Grove, Illinois
Dr. Napekoski practices at Advocate Good Samaritan Hospital in Downers Grove, Illinois, part of Advocate Health.
Dr. Napekoski's NPI, 1235372301, was assigned on April 19, 2009. Dr. Napekoski holds Illinois license 036.134795.
- NPI
- 1235372301NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6406070424
- NPI enumeration date
- April 19, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (630) 275-5900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Karl Michael Napekoski practices at Advocate Good Samaritan Hospital in Downers Grove, Illinois
Dr. Napekoski's primary practice is Advocate Good Samaritan Hospital, at 3815 Highland Avenue, Downers Grove, IL 60515 in Du Page County. The practice phone is (630) 275-5900.
- Advocate Good Samaritan Hospital3815 Highland Avenue, Downers Grove, IL 60515 · Du Page CountyPhone(630) 275-5900
Source: Dmand AI Affiliation Data
Dr. Karl Michael Napekoski is affiliated with 11 sites of care and 9 medical groups
Dr. Napekoski's primary practice is Advocate Good Samaritan Hospital in Downers Grove, Illinois, part of Advocate Health. Dr. Napekoski is also affiliated with Advocate Christ Medical Center. The medical group on file is DuPage Medical Group. Dmand AI also links Dr. Napekoski to 3 more hospitals, 8 medical groups and 6 group practices and clinics, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Karl Michael Napekoski's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Napekoski practices, 11 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Advocate Good Samaritan Hospital | Available with a free account |
| +10 more sites and 8 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Karl Michael Napekoski is one of 487 pathologists in Illinois
Anatomic pathology and clinical pathology is Dr. Napekoski's primary specialty in the NPI Registry, under taxonomy code 207ZP0102X. Dr. Napekoski is licensed in Illinois.
Specialties and state licenses
- Anatomic pathology and clinical pathology, IllinoisPrimary
Pathologists near Dr. Napekoski
Counts of pathologists 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
Dr. Karl Michael Napekoski billed Medicare for 10,166 services in 2024
CMS data shows 10,166 Medicare services from Dr. Napekoski across 10 procedure codes in 2024, for 5,281 Medicare patients. Medicare paid $515,126 for them.
Dr. Napekoski's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 13,8152024: 10,16626%
- Other services
- 2023: 222024: 0100%
Where Dr. Napekoski's Medicare services took place, 2024
- In an office8,89788%
- In a facility1,26912%
Dr. Napekoski compared with the Illinois median for pathologists, 2024
- Dr. Napekoski
- Illinois median
- Medicare services
- 10,166vs 1,3897.3 times
- Medicare patients
- 5,281vs 5739.2 times
Medians across 481 pathologists in Illinois with Dmand AI profiles that report each measure.
Dr. Napekoski's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Napekoski and other pathologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Karl Michael Napekoski treated 5,281 Medicare patients in 2024, average age 76
CMS counts 5,281 Medicare patients who saw Dr. Napekoski in 2024. The largest group is 65 to 74, with 2,385 patients. 75% of them have high cholesterol, and 73% have high blood pressure. 3% are also on Medicaid. Their average risk score is 1.13, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Napekoski's median patient age at 67, with 53% women.
Dr. Napekoski's Medicare patients by age, 2024
Dr. Napekoski's Medicare patients by sex, 2024
- Women2,69351%
- Men2,58849%
Chronic conditions among Dr. Napekoski's Medicare patients, 2024
- High cholesterol75%
- High blood pressure73%
- Arthritis46%
- Ischemic heart disease28%
- Diabetes24%
- Chronic kidney disease21%
- Atrial fibrillation20%
- Cancer19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Napekoski's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women53%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Karl Michael Napekoski takes part in Medicare
Dr. Napekoski 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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Dr. Karl Michael Napekoski received $1,572 in industry payments from 2021 to 2023
CMS Open Payments shows 7 general payments to Dr. Napekoski from 2 drug and device companies from 2021 to 2023. Consulting fees make up the largest share, 85% of the total. Myriad Genetic Laboratories, Inc. paid the most, $1,498. It also lists 4 research payments totaling $11,100 from 2022 to 2023.
General payments to Dr. Napekoski by program year, 2021 to 2023
General payments to Dr. Napekoski by kind, 2021 to 2023
- Consulting fees$1,33285%
- Food and beverage$24015%
Companies that paid Dr. Napekoski the most, 2021 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Karl Michael Napekoski'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - 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) |
| 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 Dr. Karl Michael Napekoski
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Karl Michael Napekoski's NPI number?
Dr. Karl Michael Napekoski's NPI number is 1235372301. It was assigned on April 19, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Karl Michael Napekoski?
Dr. Karl Michael Napekoski is a pathologist in Downers Grove, Illinois. The primary specialty in the NPI Registry is Anatomic Pathology & Clinical Pathology Physician (taxonomy code 207ZP0102X).
Where does Dr. Karl Michael Napekoski practice?
Dr. Napekoski practices at 3815 Highland Avenue, Downers Grove, IL 60515. Dr. Napekoski's primary practice is Advocate Good Samaritan Hospital in Downers Grove, Illinois, part of Advocate Health. Dmand AI also links Dr. Napekoski to 3 hospitals, 8 medical groups and 6 group practices and clinics.
What is Dr. Karl Michael Napekoski's office phone number?
The practice phone on file for Dr. Napekoski is (630) 275-5900.
What is Dr. Karl Michael Napekoski's medical license number?
Dr. Napekoski holds Illinois license 036.134795.
Which hospitals is Dr. Karl Michael Napekoski affiliated with?
Dr. Napekoski practices at Advocate Good Samaritan Hospital in Downers Grove, Illinois. Dr. Napekoski is also affiliated with Advocate Christ Medical Center. Dmand AI links Dr. Napekoski to 3 more hospitals.
What medical group is Dr. Karl Michael Napekoski part of?
Dr. Napekoski is linked to DuPage Medical Group. Dmand AI links Dr. Napekoski to 8 more medical groups.
Does Dr. Karl Michael Napekoski accept Medicare?
Yes. CMS data shows Dr. Napekoski billed Medicare for 10,166 services in 2024, and Dr. Napekoski accepts Medicare assignment.
How many Medicare patients does Dr. Karl Michael Napekoski see?
CMS counts 5,281 Medicare patients who saw Dr. Napekoski in 2024, with an average age of 76.
What services does Dr. Karl Michael Napekoski bill to Medicare?
In 2024, Dr. Napekoski's most billed Medicare services were lab and pathology test (88305), lab and pathology test (88304) and lab and pathology test (88341).
Has Dr. Karl Michael Napekoski received payments from drug or device companies?
CMS Open Payments shows $1,572 in general payments to Dr. Napekoski from 2 companies from 2021 to 2023. The largest total came from Myriad Genetic Laboratories, Inc.
How long has Dr. Karl Michael Napekoski been practicing?
Dr. Napekoski graduated from medical school in 2009, 17 years ago.
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