Thaddeus O'Barr, M.D.
NPI 1609168814 · Anesthesiology Physician · Orange, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thaddeus O'Barr, M.D. is a Anesthesiology Physician provider in Orange, CA (NPI 1609168814).
Provider details
- NPI number
- 1609168814
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A124438 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
15 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
137 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Injection of Anesthetic Agent And/Or Steroid Into Thigh Nerve (femoral Nerve)64447 | 21 | $55 |
| Ultrasonic Guidance for Needle Placement76942 | 19 | $31 |
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 18 | $137 |
| Injection of Local Anesthetic for Abdominal Wall Pain Control on Both Sides Using Imaging Guidance64488 | 17 | $69 |
| Anesthesia for Procedure for Total Knee Joint Replacement01402 | 15 | $379 |
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 13 | $123 |
Practice location
Mailing address
Additional practice locations (1)
- 3751 Katella AveLos Alamitos, CA 90720-3113Phone: (714) 724-5335
Registry dates
- Enumerated
- 2011-05-05
- Last updated
- 2019-06-10
Frequently asked questions
- What is Thaddeus O'Barr's NPI number?
- Thaddeus O'Barr's National Provider Identifier (NPI) is 1609168814, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thaddeus O'Barr's specialty?
- Thaddeus O'Barr is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Thaddeus O'Barr located?
- Thaddeus O'Barr's practice location on file with NPPES is 681 S Parker St Ste 150, Orange, CA 92868.
- What is Thaddeus O'Barr's phone number?
- The practice phone number listed in the NPPES registry for Thaddeus O'Barr is (714) 744-0900.
- Does Thaddeus O'Barr accept Medicare?
- Thaddeus O'Barr is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thaddeus O'Barr's NPI active?
- Yes — Thaddeus O'Barr's NPI (1609168814) is active in the NPPES registry as of the last update on 2019-06-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.