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SIOBHAN M O'CONNOR M.D.
NPI 1053545533
Pathology - Anatomic Pathology & Clinical Pathology in Chapel Hill, NC

Active since May 12, 2009PECOS EnrolledAccepts Medicare Assignment
WOMENS AND CHILDRENS HOSPITALS CLB # 7525, 101 MANNING DRIVE, CHAPEL HILL, NC 27599(919) 843-1068(919) 966-6417 Get Directions Write a Review

NPPES record last updated: March 30, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Siobhan M O'connor M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

SIOBHAN M O'CONNOR M.D. (NPI 1053545533) is an individual anatomic pathology & clinical pathology provider in Chapel Hill, North Carolina, licensed in North Carolina (2010-01066) and active in the NPI registry since May 2009. She is enrolled in Medicare PECOS, is affiliated with Unc Hospitals, and is a graduate of University Of North Carolina At Chapel Hill School Of Medicine (1998).

NPPES Registry Identity

NPI1053545533
Entity TypeIndividualFemale
Primary Taxonomy207ZP0102X
Provider Legal NameSIOBHAN M O'CONNORCredential: M.D.
Location AddressWOMENS AND CHILDRENS HOSPITALS CLB # 7525, 101 MANNING DRIVEChapel Hill, NC 27599-7525
Mailing Address48 N Serenity Hill Cir Unit 5Chapel Hill, NC 27516-0456 · (412) 867-8282 · Fax (919) 966-6417
Phone(919) 843-1068
Fax(919) 966-6417
Sole ProprietorNo
Medical School CMSUniversity Of North Carolina At Chapel Hill School Of MedicineGraduated 1998
Enumeration DateMay 12, 2009
Last NPPES UpdateMarch 30, 2021
NPPES CertifiedMarch 30, 2021
✔ NPI 1053545533 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
Licenses✔ Licensed in NC · 2010-01066✔ Licensed in PA · MD433060
Definition
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.
WOMENS AND CHILDRENS HOSPITALS CLB # 7525, Chapel Hill, NC 27599
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Other Identifiers 1

OtherH63936KY · Upin

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Siobhan M O'connor M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6204960826
PECOS Enrollment IDI20100818001000
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Siobhan O'connor reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

University Of North Carolina At Chapel Hill
11 mi
Anesthesiology
101 MANNING DR
Chapel Hill, NC 27514
  • Reassigned Medicare billing, North Carolina enrollment
  • 2,797 clinicians in this Medicare group
NPI 1780669200 (984) 974-1000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 8

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Pathology examination of tissue using a microscope, intermediate complexity 88305
A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.
276 services143 patients
Special stained specimen slides to examine tissue, each additional procedure 88341
Special stained specimen slides are used to analyze tissue in detail. In this process, extra procedures may be needed for a more thorough examination. These involve applying special stains to the tissue on slides, enhancing specific elements for closer study.
250 services69 patients
Special stained specimen slides to examine tissue, initial procedure 88342
This procedure involves the use of specially stained slides to examine tissue samples. The initial process involves obtaining a small tissue sample from your body. This sample is then placed on a slide and stained with special dyes to highlight different structures and elements. The stained slide is then examined under a microscope to help diagnose any potential health issues.
133 services93 patients
Cell examination of specimen, selective cellular enhancement technique 88112
Cell examination of a specimen using selective cellular enhancement technique is a lab process that improves the visibility of certain cells in a sample. It helps in identifying abnormalities or diseases. The process is non-invasive, safe, and aids in accurate diagnosis.
93 services86 patients
Microscopic genetic analysis of tumor, manual 88360
Microscopic genetic analysis of a tumor involves examining your tumor's genes under a microscope. This helps identify specific genetic changes in the tumor cells. This information can aid in diagnosing, predicting disease progression, and determining the most effective treatment options.
72 services30 patients
Evaluation of fine needle aspirate with interpretation and report 88173
This procedure involves using a thin needle to collect a small sample from an abnormal area or lump. The sample is then examined under a microscope to identify any potential issues. A report of the findings is provided for further analysis.
56 services32 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Unc Hospitals

Acute Care Hospitals · Chapel Hill, NC
5/5 CMS rating
OwnershipGovernment - State
CMS Certification Number340061
Location101 Manning DriveChapel Hill, NC 27514 · Orange County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 27599 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$125.01 typical visit price
range $54.12 – $165.09
Typical copayment $31.25 (range $13.53 – $41.27)
Most-billed visit code 99204
Established Patient
$95.94 typical visit price
range $17.21 – $134.61
Typical copayment $23.98 (range $4.30 – $33.65)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Siobhan O'connor's NPI number?

The NPI number for Siobhan O'connor is 1053545533. It was assigned to this individual provider in the NPPES registry on May 12, 2009.

Where is Siobhan O'connor located?

Siobhan O'connor practices at Womens And Childrens Hospitals Clb # 7525 101 Manning Drive, Chapel Hill, NC 27599. The listed phone number is (919) 843-1068.

What is Siobhan O'connor's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Is Siobhan O'connor enrolled in Medicare?

Yes. Siobhan O'connor is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Siobhan O'connor's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Siobhan O'connor reassigns Medicare benefits to University Of North Carolina At Chapel Hill (Chapel Hill, NC). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Siobhan O'connor's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Siobhan O'connor affiliated with any hospitals?

According to CMS data, Siobhan O'connor is affiliated with Unc Hospitals.

When was this NPI record last updated?

The NPPES record for Siobhan O'connor was last updated on March 30, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.