Catherine O'Neill, PA-C
NPI 1407455116 · Physician Assistant · Concord, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Catherine O'Neill, PA-C is a Physician Assistant provider in Concord, CA (NPI 1407455116).
Provider details
- NPI number
- 1407455116
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
5 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
199 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 50 | $114 |
| Administration and Interpretation of Patient-Focused Health Risk Assessment96160 | 37 | $3 |
| Test to Measure Rate of Airflow94375 | 34 | $36 |
| Professional Service for Multiple Injections of Allergen95117 | 30 | $12 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 25 | $157 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 23 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone Propionate | 110 | 47 |
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 80 | 24 |
| Azelastine Hcl | 66 | 28 |
| Montelukast Sodium | 66 | 21 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 45 | 30 |
| Ipratropium Bromide | 25 | — |
| Fluticasone/Vilanterolbrand: Breo Ellipta |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,001 across 37 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-10-22
- Last updated
- 2021-06-03
- Certified
- 2021-06-03
Frequently asked questions
- What is Catherine O'Neill's NPI number?
- Catherine O'Neill's National Provider Identifier (NPI) is 1407455116, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine O'Neill's specialty?
- Catherine O'Neill is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Catherine O'Neill located?
- Catherine O'Neill's practice location on file with NPPES is 4397 Arrowwood Cir, Concord, CA 94521-4428.
- What is Catherine O'Neill's phone number?
- The practice phone number listed in the NPPES registry for Catherine O'Neill is (925) 326-8453.
- Does Catherine O'Neill accept Medicare?
- Catherine O'Neill is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Catherine O'Neill's NPI active?
- Yes — Catherine O'Neill's NPI (1407455116) is active in the NPPES registry as of the last update on 2021-06-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.