Dr. Kenneth J. Tomchik, MD
- Medicare services, 2022
- 44
- Part D claims, 2020
- 817
- Industry payments
- $659
- Affiliated sites
- 1
- Medical groups
- 2
- Practice address
- 3707 Doty Rd Ste E&F Suite E, Woodstock, IL 60098
- Practice phone
- Call (815) 338-6600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Northwestern Medicine Regional Medical Group - Woodstock (Doty Rd F)
Primary care practice · Woodstock, Illinois
Find Dr. Tomchik's professional email, personal email and mobile number
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Dr. Kenneth J. Tomchik is an internist in Barrington, Illinois
Dr. Tomchik practices at Northwestern Medicine Regional Medical Group - Woodstock (Doty Rd F) in Woodstock, Illinois.
Dr. Tomchik's NPI, 1629090972, was assigned on July 24, 2006. Dr. Tomchik graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 1984. Dr. Tomchik holds Illinois license 036-072257.
- NPI
- 1629090972NPI Registry (opens in a new tab)
- NPI enumeration date
- July 24, 2006
- NPI status
- Active
- Practice phone
- (815) 338-6600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kenneth J. Tomchik practices in Woodstock and Barrington
Dr. Tomchik's primary practice is Northwestern Medicine Regional Medical Group - Woodstock (Doty Rd F), at 3707 Doty Rd Ste E&F Suite E, Woodstock, IL 60098. The practice phone is (815) 338-6600. The NPI Registry lists Dr. Tomchik's practice address as 450 W Il-22, Barrington, IL 60010.
- Northwestern Medicine Regional Medical Group - Woodstock (Doty Rd F)Primary3707 Doty Rd Ste E&F Suite E, Woodstock, IL 60098Phone(815) 338-6600
- NPI Registry address450 W Il-22, Barrington, IL 60010 · Lake CountyPhone(815) 338-6600
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Kenneth J. Tomchik is affiliated with 1 site of care and 2 medical groups
Dr. Tomchik's primary practice is Northwestern Medicine Regional Medical Group - Woodstock (Doty Rd F) in Woodstock, Illinois. The medical group on file is Northwestern Medicine Regional Medical Group. Dmand AI also links Dr. Tomchik to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Kenneth J. Tomchik's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tomchik practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwestern Medicine Regional Medical Group - Woodstock (Doty Rd F) | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Kenneth J. Tomchik is one of 5,652 internists in Illinois
Internal medicine is Dr. Tomchik's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Tomchik is licensed in Illinois.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
Internists near Dr. Tomchik
Counts of internists 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. Kenneth J. Tomchik billed Medicare for 44 services in 2022
CMS data shows 44 Medicare services from Dr. Tomchik across 2 procedure codes in 2022, all of them office visits. Medicare paid $2,210 for them. Every service was in an office.
Dr. Tomchik's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 442022: 44No change
Dr. Tomchik compared with the Illinois median for internists, 2022
- Dr. Tomchik
- Illinois median
- Medicare services
- 44vs 56692% below
- Part D claims
- 817vs 2842.9 times
Medians across 5,192 internists in Illinois with Dmand AI profiles that report each measure.
Dr. Tomchik's most billed Medicare procedure codes, 2022
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. Tomchik and other internists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Kenneth J. Tomchik's patients have a median age of 65
Across all payers, Dmand AI patient panel data puts Dr. Tomchik's median patient age at 65, with 42% women.
Dr. Tomchik's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women42%
- Men58%
Source: Dmand AI Patient Panel Data
Dr. Kenneth J. Tomchik wrote 817 Medicare Part D claims in 2020
In 2020, Dr. Tomchik wrote 817 Medicare Part D claims. They cover 28 drugs, with $13,306 in total drug cost. In 2019, CMS named 2,176 claims across 55 drugs.
Dr. Tomchik's most prescribed drugs by claims, 2020
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 2,1762020: 81762%
Drugs named by CMS: 28 in 2020, 55 in 2019.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Kenneth J. Tomchik received $659 in industry payments from 2016 to 2022
CMS Open Payments shows 21 general payments to Dr. Tomchik from 9 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 95% of the total. Novo Nordisk Inc paid the most, $191.
General payments to Dr. Tomchik by program year, 2016 to 2022
General payments to Dr. Tomchik by kind, 2016 to 2022
- Food and beverage$62795%
- Education$325%
Companies that paid Dr. Tomchik the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Kenneth J. Tomchik graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb)
Dr. Tomchik graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 1984.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Kenneth J. Tomchik'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Kenneth J. Tomchik
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. Kenneth J. Tomchik's NPI number?
Dr. Kenneth J. Tomchik's NPI number is 1629090972. It was assigned on July 24, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Kenneth J. Tomchik?
Dr. Kenneth J. Tomchik is an internist in Barrington, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Kenneth J. Tomchik practice?
Dr. Tomchik practices at 3707 Doty Rd Ste E&F Suite E, Woodstock, IL 60098. Dr. Tomchik also practices at 450 W Il-22, Barrington, IL 60010. Dr. Tomchik's primary practice is Northwestern Medicine Regional Medical Group - Woodstock (Doty Rd F) in Woodstock, Illinois. Dmand AI also links Dr. Tomchik to 1 medical group.
What is Dr. Kenneth J. Tomchik's office phone number?
The practice phone on file for Dr. Tomchik is (815) 338-6600.
What is Dr. Kenneth J. Tomchik's medical license number?
Dr. Tomchik holds Illinois license 036-072257.
What medical group is Dr. Kenneth J. Tomchik part of?
Dr. Tomchik is linked to Northwestern Medicine Regional Medical Group. Dmand AI links Dr. Tomchik to 1 more medical group.
Does Dr. Kenneth J. Tomchik accept Medicare?
Yes. CMS data shows Dr. Tomchik billed Medicare for 44 services in 2022.
What services does Dr. Kenneth J. Tomchik bill to Medicare?
In 2022, Dr. Tomchik's most billed Medicare services were office visit, established patient (99214) and office visit, established patient (99213).
Where did Dr. Kenneth J. Tomchik go to medical school?
Dr. Tomchik graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 1984.
What drugs does Dr. Kenneth J. Tomchik prescribe most?
In 2020 Medicare Part D data, Dr. Tomchik's most prescribed drugs by claims were Atorvastatin Calcium, Lisinopril and Amlodipine Besylate.
Has Dr. Kenneth J. Tomchik received payments from drug or device companies?
CMS Open Payments shows $659 in general payments to Dr. Tomchik from 9 companies from 2016 to 2022. The largest total came from Novo Nordisk Inc.
How long has Dr. Kenneth J. Tomchik been practicing?
Dr. Tomchik graduated from medical school in 1984, 42 years ago.
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