Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Daniel Robert O'Brien

Individual provider Anesthesiologist Assistant · NPI 1659146082

Daniel Robert O'Brien is an Anesthesiology Assistant in Saint Louis, Missouri. Graduated from University of Colorado School of Medicine, Denver in 2023, 3 years ago. Practices with Midwest Anesthesia Providers SC, a 182-clinician group and accepts Medicare assignment.

Years since qualifying
3
Trained at
University of Colorado School of Medicine, Denver
In the registry since
2023
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Practice location Address checks out

11133 Dunn Rd
Saint Louis, MO 63136-6163
Phone: (800) 392-0936
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiologist Assistant (primary) Taxonomy 367H00000X

Record details

NPI number1659146082
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedNovember 15, 2023
Last updated in NPPESNovember 15, 2023
Certification dateNovember 15, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyANESTHESIOLOGY ASSISTANT
Medical schoolUNIVERSITY OF COLORADO SCHOOL OF MEDICINE, DENVER
Graduated 2023 (3 years in practice)
Group practice Midwest Anesthesia Providers Sc — 182 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Saint Louis