MARY J TIERNEY NP
NPI 1245301571
Nurse Practitioner in San Mateo, CA

Q: What is Mary Tierney's NPI number?

The NPI number for Mary Tierney is 1245301571. It was assigned to this individual provider in the NPPES registry on November 10, 2006.

Q: What is Mary Tierney's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Q: When was this NPI record last updated?

The NPPES record for Mary Tierney was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.

Active since November 10, 2006PECOS Enrolled

222 W 39TH AVE, SAN MATEO, CA 94403(650) 573-2222 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Mary J Tierney Np NPPES

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

MARY J TIERNEY NP (NPI 1245301571) is an individual nurse practitioner in San Mateo, California, licensed in California (NP8020) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1245301571

Entity TypeIndividualFemale

Primary Taxonomy363L00000X

Provider Legal NameMARY J TIERNEYCredential: NP

Location Address222 W 39TH AVESan Mateo, CA 94403-4364

Mailing Address222 W 39th AveSan Mateo, CA 94403-4364 · (650) 573-2222

Phone(650) 573-2222

Sole ProprietorNo

Enumeration DateNovember 10, 2006

Last NPPES UpdateJuly 8, 2007

✔ NPI 1245301571 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363L00000X

License✔ Licensed in CA · NP8020

Definition

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

222 W 39TH AVE, San Mateo, CA 94403

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Other Identifiers 3

Medicare UPINP17841CA

MedicaidRN210322CA

Medicare ID-Type UnspecifiedZZZ19237ZCA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mary J Tierney Np is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94403 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

$104.51 typical visit price

range $69.00 – $202.35

Typical copayment $26.12 (range $17.25 – $50.58)

Most-billed visit code 99203

Established Patient

$119.48 typical visit price

range $23.44 – $166.46

Typical copayment $29.87 (range $5.86 – $41.61)

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.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

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