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Edit this profileAt a glance
- 4397 Arrowwood Cir, Concord, CA 94521
About Catherine O'neill
Catherine E. O'Neill, PA-C is a physician assistant based in Concord, CA. According to Medicare claims data, Catherine cared for 140 Medicare patients across 199 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, administration and interpretation of patient-focused health risk assessment, and test to measure rate of airflow. The provider's National Provider Identifier (NPI) is 1407455116.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (925) 326-8453
- Email not available
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Practice Locations
4397 ARROWWOOD CIR
Concord, CA 94521
Procedures Most Often Billed to Medicare
199 services · 140 patients · 6 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Administration and interpretation of patient-focused health risk assessment | Treatment | 96160 |
37 | As often as other peers in Physician Assistant |
| Test to measure rate of airflow | Treatment | 94375 |
34 | More often than most peers in Physician Assistant |
| Professional service for multiple injections of allergen | Treatment | 95117 |
30 | Less often than most peers in Physician Assistant |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
50 | As often as other peers in Physician Assistant |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
25 | As often as other peers in Physician Assistant |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
23 | Less often than most peers in Physician Assistant |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other physician assistants in Concord 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2020 at Other 8
Providers who graduated from the same medical school in the same year.
More connections — 5 related providers in 1 group
Also performs Administration and interpretation of patient-focused health risk assessment 5
Providers in CA who bill this service to Medicare most often.
Common questions
What does Catherine E. O'Neill specialize in?
Catherine E. O'Neill is a physician assistant in Concord, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Catherine E. O'Neill located?
Catherine E. O'Neill is listed at 4397 Arrowwood Cir, Concord, CA 94521. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Catherine E. O'Neill's phone number?
The number on file is (925) 326-8453. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Catherine E. O'Neill's NPI number?
Catherine E. O'Neill's National Provider Identifier is 1407455116. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Catherine E. O'Neill train?
Catherine E. O'Neill attended Other, graduating in 2020. This comes from the CMS National Downloadable File.
CMS public data
How long has Catherine E. O'Neill been practicing?
Catherine E. O'Neill has 6 years experience. Calculated from a graduation year of 2020, reported in the CMS National Downloadable File.
CMS public data
What does Catherine E. O'Neill do most often?
According to Medicare billing data, Catherine E. O'Neill provides treatments such as administration and interpretation of patient-focused health risk assessment and test to measure rate of airflow, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Catherine E. O'Neill confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Catherine E. O'Neill. If this is you, claiming it is free.
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