Dr. Michael J. Oleyar, DO
- Medicare services, 2024
- 365
- Medicare patients, 2026
- 502
- Hospital affiliations
- 3
- Industry payments
- $50
- Medical groups
- 8
- Practice address
- 800 W Central Road, Arlington Heights, IL 60005
- Practice phone
- Call (847) 618-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Oleyar'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. Michael J. Oleyar is an anesthesiologist in Arlington Heights, Illinois
Dr. Oleyar practices at Northwest Community Hospital in Arlington Heights, Illinois, part of Endeavor Health.
Dr. Oleyar's NPI, 1386969848, was assigned on March 28, 2010. Dr. Oleyar graduated from Michigan State University College of Osteopathic Medicine in 2010. Dr. Oleyar holds Wisconsin license 70252.
- NPI
- 1386969848NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0547499113
- NPI enumeration date
- March 28, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (847) 618-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael J. Oleyar practices at Northwest Community Hospital in Arlington Heights, Illinois
Dr. Oleyar's primary practice is Northwest Community Hospital, at 800 W Central Road, Arlington Heights, IL 60005 in Cook County. The practice phone is (847) 618-1000.
- Northwest Community Hospital800 W Central Road, Arlington Heights, IL 60005 · Cook CountyPhone(847) 618-1000
Source: Dmand AI Affiliation Data
Dr. Michael J. Oleyar is affiliated with 7 sites of care and 8 medical groups
Dr. Oleyar's primary practice is Northwest Community Hospital in Arlington Heights, Illinois, part of Endeavor Health. Dr. Oleyar is also affiliated with MyMichigan Medical Center Midland. The medical group on file is Northwestern Medical Faculty Foundation. Dmand AI also links Dr. Oleyar to 1 more hospital, 7 medical groups, 3 group practices and clinics and 1 hospital outpatient department, 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. Michael J. Oleyar's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Oleyar practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwest Community Hospital | Available with a free account |
| +6 more sites and 7 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Endeavor Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Michael J. Oleyar is one of 1,887 anesthesiologists in Illinois
Anesthesiology is Dr. Oleyar's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dmand AI has Dr. Oleyar's licenses on file in 3 states: Wisconsin, Illinois and New York.
Specialties and state licenses
- Anesthesiology, WisconsinPrimary
- Illinois license
- New York license
Anesthesiologists near Dr. Oleyar
Counts of anesthesiologists 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. Michael J. Oleyar billed Medicare for 365 services in 2024
CMS data shows 365 Medicare services from Dr. Oleyar across 12 procedure codes in 2024, for 502 Medicare patients. Medicare paid $33,288 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Oleyar's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 922024: 351282%
- Surgery
- 2023: 02024: 14
Dr. Oleyar compared with the Illinois median for anesthesiologists, 2024
- Dr. Oleyar
- Illinois median
- Medicare services
- 365vs 914.0 times
- Medicare patients
- 502vs 1573.2 times
Medians across 1,742 anesthesiologists in Illinois with Dmand AI profiles that report each measure.
Dr. Oleyar'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.
Need commercial claims for Dr. Oleyar?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Oleyar and other anesthesiologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael J. Oleyar treated 502 Medicare patients in 2026, average age 74
CMS counts 502 Medicare patients who saw Dr. Oleyar in 2026. The largest group is 65 to 74, with 242 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 8% are also on Medicaid. Their average risk score is 1.31, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Oleyar's median patient age at 63, with 56% women.
Dr. Oleyar's Medicare patients by age, 2026
Dr. Oleyar's Medicare patients by sex, 2026
- Women27755%
- Men22545%
Chronic conditions among Dr. Oleyar's Medicare patients, 2026
- High blood pressure75%
- High cholesterol75%
- Arthritis63%
- Ischemic heart disease33%
- Diabetes30%
- Anxiety27%
- Atrial fibrillation23%
- Mood disorders22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Oleyar's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women56%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2026 data
How Dr. Michael J. Oleyar takes part in Medicare
Dr. Oleyar 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Michael J. Oleyar received $50 in industry payments from 2022 to 2023
CMS Open Payments shows 2 general payments to Dr. Oleyar from 2 drug and device companies from 2022 to 2023. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $32.
General payments to Dr. Oleyar by program year, 2022 to 2023
Companies that paid Dr. Oleyar the most, 2022 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael J. Oleyar graduated from Michigan State University College of Osteopathic Medicine
Dr. Oleyar graduated from Michigan State University College of Osteopathic Medicine in 2010.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael J. Oleyar'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) |
| 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. Michael J. Oleyar
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. Michael J. Oleyar's NPI number?
Dr. Michael J. Oleyar's NPI number is 1386969848. It was assigned on March 28, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael J. Oleyar?
Dr. Michael J. Oleyar is an anesthesiologist in Arlington Heights, Illinois. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Michael J. Oleyar practice?
Dr. Oleyar practices at 800 W Central Road, Arlington Heights, IL 60005. Dr. Oleyar's primary practice is Northwest Community Hospital in Arlington Heights, Illinois, part of Endeavor Health. Dmand AI also links Dr. Oleyar to 1 hospital, 7 medical groups, 3 group practices and clinics and 1 hospital outpatient department, and a free account names each one.
What is Dr. Michael J. Oleyar's office phone number?
The practice phone on file for Dr. Oleyar is (847) 618-1000. Dmand AI also checks direct phone and mobile numbers, available with a free account.
What is Dr. Michael J. Oleyar's email address?
Dmand AI checks professional and personal email addresses for Dr. Oleyar through healthcare-specific waterfall enrichment. They are available with a free Dmand AI account.
What is Dr. Michael J. Oleyar's medical license number?
Dr. Oleyar holds Wisconsin license 70252, one of the licenses on file in 3 states.
Which states has Dr. Michael J. Oleyar been licensed in?
Dmand AI has state licenses on file for Dr. Oleyar in Wisconsin, Illinois and New York.
Which hospitals is Dr. Michael J. Oleyar affiliated with?
Dr. Oleyar practices at Northwest Community Hospital in Arlington Heights, Illinois. Dr. Oleyar is also affiliated with MyMichigan Medical Center Midland. Dmand AI links Dr. Oleyar to 1 more hospital, named with a free account.
What medical group is Dr. Michael J. Oleyar part of?
Dr. Oleyar is linked to Northwestern Medical Faculty Foundation. Dmand AI links Dr. Oleyar to 7 more medical groups, named with a free account.
Who does Dr. Michael J. Oleyar practice with?
Dmand AI links 4,902 HCPs to Dr. Oleyar's primary medical group, 284 of them anesthesiologists. A free account lists them, with verified contacts.
Show 7 more questionsShow fewer questions
Does Dr. Michael J. Oleyar accept Medicare?
Yes. CMS data shows Dr. Oleyar billed Medicare for 365 services in 2024, and Dr. Oleyar accepts Medicare assignment.
How many Medicare patients does Dr. Michael J. Oleyar see?
CMS counts 502 Medicare patients who saw Dr. Oleyar in 2026, with an average age of 74.
What services does Dr. Michael J. Oleyar bill to Medicare?
In 2024, Dr. Oleyar's most billed Medicare services were anesthesia (00811), anesthesia (00731) and anesthesia (00142).
Where did Dr. Michael J. Oleyar go to medical school?
Dr. Oleyar graduated from Michigan State University College of Osteopathic Medicine in 2010.
Has Dr. Michael J. Oleyar received payments from drug or device companies?
CMS Open Payments shows $50 in general payments to Dr. Oleyar from 2 companies from 2022 to 2023. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Michael J. Oleyar been practicing?
Dr. Oleyar graduated from medical school in 2010, 16 years ago.
What EHR does Dr. Michael J. Oleyar's practice use?
Dmand AI tracks the EHR system at Northwest Community Hospital and at 6 more sites and 7 medical groups. The vendor and product are available with a free Dmand AI account.
Selling to anesthesiology practices?
See anesthesiologists in Illinois by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card