Dr. William T. O'Rourke, MD
- Medicare services, 2024
- 1,957
- Medicare patients, 2024
- 497
- Part D claims, 2024
- 7,604
- MIPS score, 2024
- 85
- Hospital affiliations
- 5
- Practice address
- 183-91 N Addison Ave, Elmhurst, IL 60126
- Practice phone
- Call (331) 221-0000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Elmhurst Memorial Healthcare
Elmhurst, Illinois
Find Dr. O'Rourke'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. William T. O'Rourke is an internist in Elmhurst, Illinois
Dr. O'Rourke practices at Elmhurst Memorial Healthcare in Elmhurst, Illinois.
Dr. O'Rourke's NPI, 1013013119, was assigned on September 15, 2006. Dr. O'Rourke graduated from Loyola University of Chicago, Stritch School of Medicine in 1995. Dr. O'Rourke holds Illinois license 036096382.
- NPI
- 1013013119NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0941339501
- NPI enumeration date
- September 15, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (331) 221-0000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William T. O'Rourke practices at Elmhurst Memorial Healthcare in Elmhurst, Illinois
Dr. O'Rourke's primary practice is Elmhurst Memorial Healthcare, at 183-91 N Addison Ave, Elmhurst, IL 60126 in Dupage County. The practice phone is (331) 221-0000.
- Elmhurst Memorial Healthcare183-91 N Addison Ave, Elmhurst, IL 60126 · Dupage CountyPhone(331) 221-0000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. William T. O'Rourke is affiliated with 14 sites of care and 5 medical groups
Dr. O'Rourke's primary practice is Elmhurst Memorial Healthcare in Elmhurst, Illinois. Dr. O'Rourke is also affiliated with Elmhurst Hospital. The medical group on file is Endeavor Health Medical Group. Dmand AI also links Dr. O'Rourke to 4 more hospitals, 5 group practices and clinics, 4 medical groups and 3 home health agencies, 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 Dr. William T. O'Rourke's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Rourke practices, 13 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Elmhurst Memorial Healthcare | Available with a free account |
| +13 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William T. O'Rourke is one of 5,652 internists in Illinois
Internal medicine is Dr. O'Rourke's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. O'Rourke is licensed in Illinois.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
Internists near Dr. O'Rourke
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. William T. O'Rourke billed Medicare for 1,957 services in 2024
CMS data shows 1,957 Medicare services from Dr. O'Rourke across 18 procedure codes in 2024, for 497 Medicare patients. Medicare paid $175,452 for them.
Dr. O'Rourke's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,2452024: 1,1567%
- Other services
- 2023: 3842024: 68679%
- Tests and treatments
- 2023: 1972024: 11542%
Where Dr. O'Rourke's Medicare services took place, 2024
- In an office1,69487%
- In a facility26313%
Dr. O'Rourke compared with the Illinois median for internists, 2024
- Dr. O'Rourke
- Illinois median
- Medicare services
- 1,957vs 5663.5 times
- Medicare patients
- 497vs 2082.4 times
- Part D claims
- 6,883vs 28424.2 times
Medians across 5,192 internists in Illinois with Dmand AI profiles that report each measure.
Dr. O'Rourke'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. O'Rourke?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. O'Rourke and other internists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William T. O'Rourke treated 497 Medicare patients in 2024, average age 76
CMS counts 497 Medicare patients who saw Dr. O'Rourke in 2024. The largest group is 65 to 74, with 219 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 2% are also on Medicaid. Their average risk score is 1.17, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. O'Rourke's median patient age at 72, with 31% women.
Dr. O'Rourke's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. O'Rourke's Medicare patients by sex, 2024
- Women19138%
- Men30662%
Chronic conditions among Dr. O'Rourke's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis51%
- Ischemic heart disease35%
- Diabetes26%
- Chronic kidney disease22%
- Atrial fibrillation21%
- Anxiety19%
Share of Medicare patients with each condition. A patient can have several.
Dr. O'Rourke's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women31%
- Men68%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William T. O'Rourke wrote 7,604 Medicare Part D claims in 2024
In 2024, Dr. O'Rourke wrote 7,604 Medicare Part D claims for 657 patients. 86% of them were for generic drugs. CMS names the drug for 6,883 of them, across 131 drugs with 11 or more claims each, at $478,278 in total drug cost. In 2023, CMS named 6,337 claims across 123 drugs.
Dr. O'Rourke's Part D claims by kind of drug, 2024
- Generic6,565 claims86%
- Brand-name949 claims12%
- Other90 claims1%
Dr. O'Rourke's most prescribed drugs by claims, 2024
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. O'Rourke's Part D claims, 2024
- Opioids3%206 of 7,604 claims
- Antibiotics3%223 of 7,604 claims
- Antipsychotics, patients 65 and over1%42 of 7,604 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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 6,3372024: 6,8839%
Drugs named by CMS: 131 in 2024, 123 in 2023.
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
Dr. William T. O'Rourke scored 85 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 85 out of 100 for Dr. O'Rourke for performance year 2024, reported as part of a group. Dr. O'Rourke accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. O'Rourke as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. O'Rourke's MIPS scores, performance year 2024
- 85of 100Final score
- 75.9of 100Quality
- 99of 100Promoting Interoperability
- 40of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. William T. O'Rourke received $151 in industry payments from 2021 to 2025
CMS Open Payments shows 2 general payments to Dr. O'Rourke from 2 drug and device companies from 2021 to 2025. Food and beverage make up the largest share, 100% of the total. Aurinia Pharma U.S., Inc. paid the most, $125.
General payments to Dr. O'Rourke by program year, 2021 to 2025
Companies that paid Dr. O'Rourke the most, 2021 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William T. O'Rourke graduated from Loyola University of Chicago, Stritch School of Medicine
Dr. O'Rourke graduated from Loyola University of Chicago, Stritch School of Medicine in 1995.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William T. O'Rourke'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 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)Clinician Public Reporting: Overall MIPS Performance (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. William T. O'Rourke
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. William T. O'Rourke's NPI number?
Dr. William T. O'Rourke's NPI number is 1013013119. It was assigned on September 15, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William T. O'Rourke?
Dr. William T. O'Rourke is an internist in Elmhurst, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. William T. O'Rourke practice?
Dr. O'Rourke practices at 183-91 N Addison Ave, Elmhurst, IL 60126. Dr. O'Rourke's primary practice is Elmhurst Memorial Healthcare in Elmhurst, Illinois. Dmand AI also links Dr. O'Rourke to 4 hospitals, 5 group practices and clinics, 4 medical groups and 3 home health agencies.
What is Dr. William T. O'Rourke's office phone number?
The practice phone on file for Dr. O'Rourke is (331) 221-0000.
What is Dr. William T. O'Rourke's medical license number?
Dr. O'Rourke holds Illinois license 036096382.
Which hospitals is Dr. William T. O'Rourke affiliated with?
Dr. O'Rourke is affiliated with Elmhurst Hospital. Dmand AI links Dr. O'Rourke to 4 more hospitals.
What medical group is Dr. William T. O'Rourke part of?
Dr. O'Rourke is linked to Endeavor Health Medical Group. Dmand AI links Dr. O'Rourke to 4 more medical groups.
Does Dr. William T. O'Rourke accept Medicare?
Yes. CMS data shows Dr. O'Rourke billed Medicare for 1,957 services in 2024, and Dr. O'Rourke accepts Medicare assignment.
Does Dr. William T. O'Rourke offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. O'Rourke as offering telehealth services.
What is Dr. William T. O'Rourke's MIPS score?
Dr. O'Rourke's MIPS final score for performance year 2024 is 85 out of 100, reported as part of a group.
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How many Medicare patients does Dr. William T. O'Rourke see?
CMS counts 497 Medicare patients who saw Dr. O'Rourke in 2024, with an average age of 76.
What services does Dr. William T. O'Rourke bill to Medicare?
In 2024, Dr. O'Rourke's most billed Medicare services were office visit, established patient (99214), medicare service (G0439) and medicare service (G2211).
Where did Dr. William T. O'Rourke go to medical school?
Dr. O'Rourke graduated from Loyola University of Chicago, Stritch School of Medicine in 1995.
What drugs does Dr. William T. O'Rourke prescribe most?
In 2024 Medicare Part D data, Dr. O'Rourke's most prescribed drugs by claims were Amlodipine Besylate, Atorvastatin Calcium and Levothyroxine Sodium.
Has Dr. William T. O'Rourke received payments from drug or device companies?
CMS Open Payments shows $151 in general payments to Dr. O'Rourke from 2 companies from 2021 to 2025. The largest total came from Aurinia Pharma U.S., Inc.
How long has Dr. William T. O'Rourke been practicing?
Dr. O'Rourke graduated from medical school in 1995, 31 years ago.
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