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

Dr. Thaddeus O'Barr IV, MD

Individual provider Anesthesiology Physician · NPI 1609168814

Dr. Thaddeus O'Barr IV, MD is an Anesthesiology in Orange, California. Graduated from University of California, Irvine, California College of Medicine in 2011, 15 years ago. Practices with Premiercare Anesthesia Fountain Valley Inc, a 10-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
15
Trained at
University of California, Irvine, California College of Medicine
Licensed in
CA
In the registry since
2011
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

681 S Parker St Ste 150
Orange, CA 92868
Phone: (714) 744-0900
Fax: (714) 744-9232
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 3751 Katella Ave, Los Alamitos, CA 90720-3113 — (714) 724-5335

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence A124438 (CA)

Record details

NPI number1609168814
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 5, 2011
Last updated in NPPESJune 10, 2019

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolUNIVERSITY OF CALIFORNIA, IRVINE, CALIFORNIA COLLEGE OF MEDICINE
Graduated 2011 (15 years in practice)
Group practice Premiercare Anesthesia Fountain Valley Inc — 10 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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