Caoilfhionn O'Connor, DNP
NPI 1184386864 · Nurse Practitioner · La Jolla, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Caoilfhionn O'Connor, DNP is a Nurse Practitioner provider in La Jolla, CA (NPI 1184386864).
Provider details
- NPI number
- 1184386864
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- DNP
- Sex
- Female
- Sole proprietor
- No
- License
- 95018331 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
4 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
147 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 68 | $85 |
| Biopsy and Aspiration of Bone Marrow Sample for Diagnosis38222 | 41 | $65 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 38 | $122 |
Typical Medicare-allowed amounts for these services range $65–$122 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Acyclovir | 96 | 34 |
| Levofloxacin | 27 | 17 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 24 | 11 |
| Oxycodone Hcl | 23 | 11 |
| Entecavir | 21 | — |
| Tramadol Hcl | 20 | 11 |
| Potassium Chloride | 20 | — |
Practice location
Mailing address
Additional practice locations (1)
- 200 W Arbor DrSan Diego, CA 92103-9000Phone: (800) 926-8273
Registry dates
- Enumerated
- 2021-10-09
- Last updated
- 2025-03-14
- Certified
- 2025-03-14
Frequently asked questions
- What is Caoilfhionn O'Connor's NPI number?
- Caoilfhionn O'Connor's National Provider Identifier (NPI) is 1184386864, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Caoilfhionn O'Connor's specialty?
- Caoilfhionn O'Connor is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Caoilfhionn O'Connor located?
- Caoilfhionn O'Connor's practice location on file with NPPES is 3855 Health Sciences Dr, La Jolla, CA 92093-1503.
- What is Caoilfhionn O'Connor's phone number?
- The practice phone number listed in the NPPES registry for Caoilfhionn O'Connor is (858) 822-6100.
- Does Caoilfhionn O'Connor accept Medicare?
- Caoilfhionn O'Connor is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Caoilfhionn O'Connor's NPI active?
- Yes — Caoilfhionn O'Connor's NPI (1184386864) is active in the NPPES registry as of the last update on 2025-03-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.