Daniel Robert O'Brien
- Hospital affiliations
- 1
- Industry payments
- $19
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2023
- Practice address
- 11133 Dunn Road, Saint Louis, MO 63136
- Practice phone
- Call (314) 653-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Daniel 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.
Daniel Robert O'Brien is an anesthesiologist assistant in Saint Louis, Missouri
Daniel O'Brien practices at Christian Hospital in Saint Louis, Missouri, part of BJC Health.
Daniel O'Brien's NPI, 1659146082, was assigned on November 15, 2023. Daniel O'Brien graduated from University of Colorado School of Medicine, Denver in 2023.
- NPI
- 1659146082NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6800239732
- NPI enumeration date
- November 15, 2023
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 653-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 29
- Medical school graduation
- 2023
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Daniel Robert O'Brien practices at Christian Hospital in Saint Louis, Missouri
Daniel O'Brien's primary practice is Christian Hospital, at 11133 Dunn Road, Saint Louis, MO 63136 in St. Louis County. The practice phone is (314) 653-5000.
- Christian Hospital11133 Dunn Road, Saint Louis, MO 63136 · St. Louis CountyPhone(314) 653-5000
Source: Dmand AI Affiliation Data
Daniel Robert O'Brien is affiliated with 1 site of care and 1 medical group
Daniel O'Brien's primary practice is Christian Hospital in Saint Louis, Missouri, part of BJC Health. The medical group on file is Midwest Anesthesia Providers S.C.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Daniel Robert O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Daniel O'Brien practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Christian Hospital | 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 BJC Health and 6.2K+ hospitals, with verified contacts in the same login.
Daniel Robert O'Brien is one of 243 anesthesiologist assistants in Missouri
Anesthesiologist assistant is Daniel O'Brien's primary specialty in the NPI Registry, under taxonomy code 367H00000X.
Specialties and state licenses
- Anesthesiologist assistantPrimary
Anesthesiologist assistants near Daniel O'Brien
Counts of anesthesiologist assistants 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
Daniel Robert O'Brien's patients have a median age of 65
Across all payers, Dmand AI patient panel data puts Daniel O'Brien's median patient age at 65, with 55% women.
Daniel 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 65
Patient panel by sex, all payers
- Women55%
- Men45%
Source: Dmand AI Patient Panel Data
How Daniel Robert O'Brien takes part in Medicare
Daniel 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)
Daniel Robert O'Brien received $19 in industry payments in 2025
CMS Open Payments shows 1 general payment to Daniel O'Brien from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $19.
Companies that paid Daniel O'Brien the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Daniel Robert O'Brien graduated from University of Colorado School of Medicine, Denver
Daniel O'Brien graduated from University of Colorado School of Medicine, Denver in 2023.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Daniel Robert 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 DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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 Daniel Robert 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 Daniel Robert O'Brien's NPI number?
Daniel Robert O'Brien's NPI number is 1659146082. It was assigned on November 15, 2023, and it is active in the NPI Registry.
What does Daniel Robert O'Brien specialize in?
Daniel Robert O'Brien is an anesthesiologist assistant in Saint Louis, Missouri. The primary specialty in the NPI Registry is Anesthesiologist Assistant (taxonomy code 367H00000X).
Where does Daniel Robert O'Brien practice?
Daniel O'Brien practices at 11133 Dunn Road, Saint Louis, MO 63136. Daniel O'Brien's primary practice is Christian Hospital in Saint Louis, Missouri, part of BJC Health.
What is Daniel Robert O'Brien's office phone number?
The practice phone on file for Daniel O'Brien is (314) 653-5000. Dmand AI also checks direct phone and mobile numbers, available with a free account.
What is Daniel Robert O'Brien's email address?
Dmand AI checks professional and personal email addresses for Daniel O'Brien through healthcare-specific waterfall enrichment. They are available with a free Dmand AI account.
Which hospitals is Daniel Robert O'Brien affiliated with?
Daniel O'Brien practices at Christian Hospital in Saint Louis, Missouri.
What medical group is Daniel Robert O'Brien part of?
Daniel O'Brien is linked to Midwest Anesthesia Providers S.C.
Who does Daniel Robert O'Brien practice with?
Dmand AI links 136 HCPs to Daniel O'Brien's primary medical group, 16 of them anesthesiologist assistants. A free account lists them, with verified contacts.
Does Daniel Robert O'Brien accept Medicare?
Yes. CMS lists Daniel O'Brien as accepting Medicare assignment.
Where did Daniel Robert O'Brien go to medical school?
Daniel O'Brien graduated from University of Colorado School of Medicine, Denver in 2023.
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Has Daniel Robert O'Brien received payments from drug or device companies?
CMS Open Payments shows $19 in general payments to Daniel O'Brien from 1 company from 2025 to 2025. The largest total came from Merck Sharp & Dohme Corporation.
How long has Daniel Robert O'Brien been practicing?
Daniel O'Brien graduated from medical school in 2023, 3 years ago.
What EHR does Daniel Robert O'Brien's practice use?
Dmand AI tracks the EHR system at Christian Hospital. The vendor and product are available with a free Dmand AI account.
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