Dr. Eric Michael Czajkowski, MD
- Medicare services, 2024
- 442
- Medicare patients, 2024
- 171
- Part D claims, 2024
- 143
- Hospital affiliations
- 1
- Medical groups
- 2
- Practice address
- 4440 W 95th Street, Oak Lawn, IL 60453
- Practice phone
- Call (708) 684-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Czajkowski's professional email, personal email and mobile number
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Dr. Eric Michael Czajkowski is an internist in Oak Lawn, Illinois
Dr. Czajkowski practices at Advocate Christ Medical Center in Oak Lawn, Illinois, part of Advocate Health.
Dr. Czajkowski's NPI, 1871029421, was assigned on May 2, 2017. Dr. Czajkowski holds Illinois license 036-152944.
- NPI
- 1871029421NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2961770177
- NPI enumeration date
- May 2, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (708) 684-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Eric Michael Czajkowski practices at Advocate Christ Medical Center in Oak Lawn, Illinois
Dr. Czajkowski's primary practice is Advocate Christ Medical Center, at 4440 W 95th Street, Oak Lawn, IL 60453 in Cook County. The practice phone is (708) 684-8000.
- Advocate Christ Medical Center4440 W 95th Street, Oak Lawn, IL 60453 · Cook CountyPhone(708) 684-8000
Source: Dmand AI Affiliation Data
Dr. Eric Michael Czajkowski is affiliated with 3 sites of care and 2 medical groups
Dr. Czajkowski's primary practice is Advocate Christ Medical Center in Oak Lawn, Illinois, part of Advocate Health. The medical group on file is Dreyer Medical Clinic (Advocate Medical Group). Dmand AI also links Dr. Czajkowski to 2 more group practices and clinics and 1 medical group, 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. Eric Michael Czajkowski's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Czajkowski practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Advocate Christ Medical Center | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Eric Michael Czajkowski is one of 5,652 internists in Illinois
Internal medicine is Dr. Czajkowski's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Czajkowski is licensed in Illinois.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
Internists near Dr. Czajkowski
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. Eric Michael Czajkowski billed Medicare for 442 services in 2024
CMS data shows 442 Medicare services from Dr. Czajkowski across 3 procedure codes in 2024, for 171 Medicare patients. Medicare paid $44,284 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Czajkowski's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6472024: 44232%
Dr. Czajkowski compared with the Illinois median for internists, 2024
- Dr. Czajkowski
- Illinois median
- Medicare services
- 442vs 56622% below
- Medicare patients
- 171vs 20818% below
- Part D claims
- 23vs 28492% below
Medians across 5,192 internists in Illinois with Dmand AI profiles that report each measure.
Dr. Czajkowski'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Eric Michael Czajkowski treated 171 Medicare patients in 2024, average age 75
CMS counts 171 Medicare patients who saw Dr. Czajkowski in 2024. The largest group is 75 to 84, with 62 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 42% are also on Medicaid. Their average risk score is 2.95, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Czajkowski's median patient age at 76, with 58% women.
Dr. Czajkowski's Medicare patients by age, 2024
Dr. Czajkowski's Medicare patients by sex, 2024
- Women9656%
- Men7544%
Chronic conditions among Dr. Czajkowski's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease65%
- Heart failure62%
- Diabetes58%
- Arthritis53%
- Ischemic heart disease49%
- Atrial fibrillation39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Czajkowski's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women58%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Eric Michael Czajkowski wrote 143 Medicare Part D claims in 2024
In 2024, Dr. Czajkowski wrote 143 Medicare Part D claims for 68 patients. 88% of them were for generic drugs. CMS names the drug for 23 of them, across 2 drugs with 11 or more claims each, at $270 in total drug cost. In 2022, CMS named 33 claims across 2 drugs.
Dr. Czajkowski's Part D claims by kind of drug, 2024
- Generic126 claims88%
- Brand-name and other17 claims12%
Dr. Czajkowski's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Czajkowski's Part D claims, 2024
- Opioids10%14 of 143 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 332023: 2330%
Drugs named by CMS: 2 in 2023, 2 in 2022.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Eric Michael Czajkowski takes part in Medicare
Dr. Czajkowski 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 Dr. Eric Michael Czajkowski'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) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)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 Dr. Eric Michael Czajkowski
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. Eric Michael Czajkowski's NPI number?
Dr. Eric Michael Czajkowski's NPI number is 1871029421. It was assigned on May 2, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Eric Michael Czajkowski?
Dr. Eric Michael Czajkowski is an internist in Oak Lawn, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Eric Michael Czajkowski practice?
Dr. Czajkowski practices at 4440 W 95th Street, Oak Lawn, IL 60453. Dr. Czajkowski's primary practice is Advocate Christ Medical Center in Oak Lawn, Illinois, part of Advocate Health. Dmand AI also links Dr. Czajkowski to 2 group practices and clinics and 1 medical group.
What is Dr. Eric Michael Czajkowski's office phone number?
The practice phone on file for Dr. Czajkowski is (708) 684-8000.
What is Dr. Eric Michael Czajkowski's medical license number?
Dr. Czajkowski holds Illinois license 036-152944.
Which hospitals is Dr. Eric Michael Czajkowski affiliated with?
Dr. Czajkowski practices at Advocate Christ Medical Center in Oak Lawn, Illinois.
What medical group is Dr. Eric Michael Czajkowski part of?
Dr. Czajkowski is linked to Dreyer Medical Clinic (Advocate Medical Group). Dmand AI links Dr. Czajkowski to 1 more medical group.
Does Dr. Eric Michael Czajkowski accept Medicare?
Yes. CMS data shows Dr. Czajkowski billed Medicare for 442 services in 2024, and Dr. Czajkowski accepts Medicare assignment.
How many Medicare patients does Dr. Eric Michael Czajkowski see?
CMS counts 171 Medicare patients who saw Dr. Czajkowski in 2024, with an average age of 75.
What services does Dr. Eric Michael Czajkowski bill to Medicare?
In 2024, Dr. Czajkowski's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99223) and hospital inpatient care (99239).
What drugs does Dr. Eric Michael Czajkowski prescribe most?
In 2023 Medicare Part D data, Dr. Czajkowski's most prescribed drugs by claims were Hydralazine HCl and Amlodipine Besylate.
How long has Dr. Eric Michael Czajkowski been practicing?
Dr. Czajkowski graduated from medical school in 2016, 10 years ago.
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