A fast, free, no-login way to look up any U.S. healthcare provider in the federal NPPES registry.

Lookups

NPI Lookup
NPI Registry
By Specialty
By State

Resources

Guides
For Providers / API
Data Sources
About

Legal

Privacy
Terms
Correct a record

Data is sourced from the public NPPES (National Plan and Provider Enumeration System) registry published by CMS. NPI Central is not affiliated with, or endorsed by, CMSor any healthcare provider. Information is provided “as is” for general reference and is not medical advice.

FCRA notice: NPI Central is not a consumer reporting agency. This information may not be used to determine eligibility for employment, credentialing, insurance, or any other purpose covered by the Fair Credit Reporting Act.

© 2026 NPI Central. All rights reserved.

Ciara O'Sullivan, M.D — NPI 1427495357, Rochester, MN | NPI Central

Home/
NPI Lookup/
MN/
NPI 1427495357

IndividualActive

Ciara O'Sullivan, M.D

NPI 1427495357 · Medical Oncology Physician · Rochester, MN

Provider details

NPI number: 1427495357
Entity type: Individual
Primary specialty: Medical Oncology PhysicianAllopathic & Osteopathic Physicians
Credential: M.D
Sex: Female
Sole proprietor: No
License: MTR000235 (DC)

Specialties & taxonomies

Medical Oncology PhysicianPrimary207RX0202XLicense 60300 (MN)
Allopathic & Osteopathic Physicians
Medical Oncology Physician207RX0202XLicense MTR000235 (DC)
Allopathic & Osteopathic Physicians

Practice location

200 1st St Sw

Rochester, MN 55905-0001

Phone: (507) 284-2511

Approximate (ZIP-level) locationGet directions

More MN providers

Mailing address

200 1st St Sw

Rochester, MN 55905-0001

Additional practice locations (1)

555 Massachusetts Ave Nw
Apartment 619
Washington, DC 20001-4717
Phone: (202) 403-7992

Registry dates

Enumerated: 2013-06-01
Last updated: 2020-08-19
Certified: 2020-08-19

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.