What is Marni Tierno's NPI number?

Marni Tierno's National Provider Identifier (NPI) is 1205788536, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Marni Tierno's specialty?

Marni Tierno is listed in the NPPES registry with a primary specialty of Oncology Registered Nurse (Nursing Service Providers).

Where is Marni Tierno located?

Marni Tierno's practice location on file with NPPES is 810 7th Ave Ste 515, New York, NY 10019-5876.

What is Marni Tierno's phone number?

The practice phone number listed in the NPPES registry for Marni Tierno is (646) 818-9330.

Is Marni Tierno's NPI active?

Yes — Marni Tierno's NPI (1205788536) is active in the NPPES registry as of the last update on 2026-02-10.

IndividualActive

Marni Tierno, RN

NPI 1205788536 · Oncology Registered Nurse · New York, NY

Marni Tierno, RN is a Oncology Registered Nurse provider in New York, NY (NPI 1205788536).

Provider details

NPI number: 1205788536
Entity type: Individual
Primary specialty: Oncology Registered NurseNursing Service Providers
Credential: RN
Sex: Female
Sole proprietor: Yes
License: RN588361 (PA)

Specialties & taxonomies

Oncology Registered NursePrimary163WX0200XLicense RN588361 (PA)
Nursing Service Providers

Profile Score

Established profile(53/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
Under 1 yr in 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

810 7th Ave Ste 515

New York, NY 10019-5876

Phone: (646) 818-9330

Street-level locationGet directions

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Mailing address