Mary O'Sullivan, DNP, ARNP
NPI 1699389494 · Acute Care Nurse Practitioner · New York, NY
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary O'Sullivan, DNP, ARNP is a Acute Care Nurse Practitioner provider in New York, NY (NPI 1699389494).
Provider details
- NPI number
- 1699389494
- Entity type
- Individual
- Primary specialty
- Acute Care Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- DNP, ARNP
- Sex
- Female
- Sole proprietor
- No
- License
- AP61441998 (WA)
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 tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-08-31
- Last updated
- 2025-05-05
- Certified
- 2025-05-05
Frequently asked questions
- What is Mary O'Sullivan's NPI number?
- Mary O'Sullivan's National Provider Identifier (NPI) is 1699389494, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary O'Sullivan's specialty?
- Mary O'Sullivan is listed in the NPPES registry with a primary specialty of Acute Care Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary O'Sullivan located?
- Mary O'Sullivan's practice location on file with NPPES is 1275 York Ave, New York, NY 10065-6007.
- What is Mary O'Sullivan's phone number?
- The practice phone number listed in the NPPES registry for Mary O'Sullivan is (347) 798-9213.
- Does Mary O'Sullivan accept Medicare?
- Mary O'Sullivan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary O'Sullivan's NPI active?
- Yes — Mary O'Sullivan's NPI (1699389494) is active in the NPPES registry as of the last update on 2025-05-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.