Siobhan O'Connor, M.D.
NPI 1053545533 · Anatomic Pathology & Clinical Pathology Physician · Chapel Hill, NC
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Siobhan O'Connor, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in Chapel Hill, NC (NPI 1053545533).
Provider details
- NPI number
- 1053545533
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MD433060 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
962 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) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 276 | $34 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 250 | $26 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 133 | $32 |
| Cell Examination of Specimen, Selective Cellular Enhancement Technique88112 | 93 | $26 |
| Microscopic Genetic Analysis of Tumor, Manual88360 | 72 | $38 |
| Evaluation of Fine Needle Aspirate With Interpretation and Report88173 | 56 | $63 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-05-12
- Last updated
- 2021-03-30
- Certified
- 2021-03-30
Frequently asked questions
- What is Siobhan O'Connor's NPI number?
- Siobhan O'Connor's National Provider Identifier (NPI) is 1053545533, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Siobhan O'Connor's specialty?
- Siobhan O'Connor is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Siobhan O'Connor located?
- Siobhan O'Connor's practice location on file with NPPES is Womens and Childrens Hospitals Clb # 7525, Chapel Hill, NC 27599-7525.
- What is Siobhan O'Connor's phone number?
- The practice phone number listed in the NPPES registry for Siobhan O'Connor is (919) 843-1068.
- Does Siobhan O'Connor accept Medicare?
- Siobhan 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 Siobhan O'Connor's NPI active?
- Yes — Siobhan O'Connor's NPI (1053545533) is active in the NPPES registry as of the last update on 2021-03-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.