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Dr. Michael O'Brien, DO

  • Park Ridge, IL
  • Internist
NPI1245081454
Part D claims, 2024
16
Publications
1
State license
1
Year NPI issued
2024
Practice address
1775 Ballard Rd, Park Ridge, IL 60068-1005
Practice phone
Call (847) 318-9340
Professional email
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Personal email
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Mobile number
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Social profiles

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Dr. Michael O'Brien is an internist in Park Ridge, Illinois

Dr. O'Brien practices in Park Ridge, Illinois.

Dr. O'Brien's NPI, 1245081454, was assigned on March 27, 2024. Dr. O'Brien holds Illinois license 125.083777.

NPI and contact details
NPI
1245081454NPI Registry (opens in a new tab)
NPI enumeration date
March 27, 2024
NPI status
Active
Practice phone
(847) 318-9340
Professional email
Get email
Personal email
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Mobile number
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Sex
Male

Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data

Dr. Michael O'Brien's practice address is in Park Ridge, Illinois

Dr. O'Brien's practice address in the NPI Registry is 1775 Ballard Rd, Park Ridge, IL 60068-1005. The practice phone is (847) 318-9340.

  • NPI Registry address
    1775 Ballard Rd, Park Ridge, IL 60068-1005Phone(847) 318-9340

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dmand AI tracks the EHR system at Dr. Michael O'Brien's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Brien practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Dr. O'Brien's practiceAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Michael O'Brien is one of 5,652 internists in Illinois

Internal medicine is Dr. O'Brien's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. O'Brien is licensed in Illinois.

Specialties and state licenses

  • Internal medicine, IllinoisPrimaryLicense 125.083777 · taxonomy 207R00000X

Internists near Dr. O'Brien

Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.

5,652internists in Illinois112internists in Park Ridge

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Michael O'Brien's patients have a median age of 67

Across all payers, Dmand AI patient panel data puts Dr. O'Brien's median patient age at 67, with 56% women.

Dr. 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 67

Patient panel by sex, all payers

  • Women56%
  • Men44%

Source: Dmand AI Patient Panel Data

Dr. Michael O'Brien wrote 16 Medicare Part D claims in 2024

In 2024, Dr. O'Brien wrote 16 Medicare Part D claims for 14 patients. 81% of them were for generic drugs.

Part D claims, 202416
Part D patients14

Dr. O'Brien's Part D claims by kind of drug, 2024

  • Generic13 claims81%
  • Brand-name and other3 claims19%

Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data

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Dr. Michael O'Brien has 1 publication on record

Dmand AI links 1 paper to Dr. O'Brien in 2021. Dr. O'Brien's most frequent co-author is Mary Mulcahey, MD.

Papers1

Dr. O'Brien's most frequent co-authors

Recent publications by Dr. O'Brien

See all 1 publications and co-authors

See who Dr. O'Brien researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. O'Brien works with, so you can find a warm path to the right internists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Sources for Dr. Michael O'Brien's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Medicare patients and the all-payer patient panelDmand AI Patient Panel Data
Part D prescribingMedicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Michael 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 Dr. Michael O'Brien's NPI number?

Dr. Michael O'Brien's NPI number is 1245081454. It was assigned on March 27, 2024, and it is active in the NPI Registry.

What kind of doctor is Dr. Michael O'Brien?

Dr. Michael O'Brien is an internist in Park Ridge, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Dr. Michael O'Brien practice?

Dr. O'Brien practices at 1775 Ballard Rd, Park Ridge, IL 60068-1005.

What is Dr. Michael O'Brien's office phone number?

The practice phone on file for Dr. O'Brien is (847) 318-9340.

What is Dr. Michael O'Brien's medical license number?

Dr. O'Brien holds Illinois license 125.083777.

How long has Dr. Michael O'Brien been practicing?

Dr. O'Brien's NPI was assigned in 2024.

Does Dr. Michael O'Brien do research?

Dmand AI links 1 publication to Dr. O'Brien.

Who does Dr. Michael O'Brien publish with?

Dr. O'Brien's most frequent co-authors are Mary Mulcahey, MD (1 shared paper).

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