William Gerard O'Brien, DC
- Medicare patients, 2024
- 76
- Affiliated sites
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 1141 E Main St, East Dundee, IL 60118-2440
- Practice phone
- Call (630) 842-1466
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Center for Chiropractic & Natural Medicine
Physician office · East Dundee, Illinois
Find William O'Brien'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.
William Gerard O'Brien is a chiropractor in East Dundee, Illinois
William O'Brien practices at Center for Chiropractic & Natural Medicine in East Dundee, Illinois.
William O'Brien's NPI, 1235217795, was assigned on November 1, 2006.
- NPI
- 1235217795NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8820188758
- NPI enumeration date
- November 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (630) 842-1466
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
William Gerard O'Brien practices at Center for Chiropractic & Natural Medicine in East Dundee, Illinois
William O'Brien's primary practice is Center for Chiropractic & Natural Medicine, at 1141 E Main St, East Dundee, IL 60118-2440. The practice phone is (630) 842-1466.
- Center for Chiropractic & Natural Medicine1141 E Main St, East Dundee, IL 60118-2440Phone(630) 842-1466
Source: Dmand AI Affiliation Data
William Gerard O'Brien is affiliated with 1 site of care
William O'Brien's primary practice is Center for Chiropractic & Natural Medicine in East Dundee, Illinois.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at William Gerard O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where William O'Brien practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Center for Chiropractic & Natural Medicine | Available with a free account |
Source: Dmand AI Technology Install Data
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William Gerard O'Brien is one of 2,276 chiropractors in Illinois
Chiropractor is William O'Brien's primary specialty in the NPI Registry, under taxonomy code 111N00000X. William O'Brien has a license on file in Illinois.
Specialties and state licenses
- Chiropractor, Illinois
Chiropractors near William O'Brien
Counts of chiropractors 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
William Gerard O'Brien treated 76 Medicare patients in 2024, average age 73
CMS counts 76 Medicare patients who saw William O'Brien in 2024. The largest group is 65 to 74, with 37 patients. 75% of them have high cholesterol, and 71% have high blood pressure. Their average risk score is 0.99, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts William O'Brien's median patient age at 52, with 61% women.
William O'Brien's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
William O'Brien's Medicare patients by sex, 2024
- Women5167%
- Men2533%
Chronic conditions among William O'Brien's Medicare patients, 2024
- High cholesterol75%
- High blood pressure71%
- Arthritis58%
- Diabetes30%
- Ischemic heart disease29%
- Anxiety25%
- Chronic kidney disease17%
- Heart failure17%
Share of Medicare patients with each condition. A patient can have several.
William O'Brien's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 52
Patient panel by sex, all payers
- Women61%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How William Gerard O'Brien takes part in Medicare
William O'Brien 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)
Sources for William Gerard O'Brien'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 Data |
| 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) |
| 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 William Gerard O'Brien
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is William Gerard O'Brien's NPI number?
William Gerard O'Brien's NPI number is 1235217795. It was assigned on November 1, 2006, and it is active in the NPI Registry.
What does William Gerard O'Brien specialize in?
William Gerard O'Brien is a chiropractor in East Dundee, Illinois. The primary specialty in the NPI Registry is Chiropractor (taxonomy code 111N00000X).
Where does William Gerard O'Brien practice?
William O'Brien practices at 1141 E Main St, East Dundee, IL 60118-2440. William O'Brien's primary practice is Center for Chiropractic & Natural Medicine in East Dundee, Illinois.
What is William Gerard O'Brien's office phone number?
The practice phone on file for William O'Brien is (630) 842-1466.
Does William Gerard O'Brien accept Medicare?
Yes. CMS lists William O'Brien as accepting Medicare assignment.
How many Medicare patients does William Gerard O'Brien see?
CMS counts 76 Medicare patients who saw William O'Brien in 2024, with an average age of 73.
How long has William Gerard O'Brien been practicing?
William O'Brien graduated from medical school in 2003, 23 years ago.
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