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MARY ANN WILLIAMSON NP
NPI 1699042457
Nurse Practitioner in Concord, CA

Active since November 22, 2011
2185 PACHECO ST, CONCORD, CA 94520(925) 676-0505(925) 676-2814 Get Directions Write a Review

NPPES record last updated: July 30, 2015. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Mary Ann Williamson Np NPPES

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

MARY ANN WILLIAMSON NP (NPI 1699042457) is an individual nurse practitioner in Concord, California, licensed in California (2400) and active in the NPI registry since November 2011.

NPPES Registry Identity

NPI1699042457
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameMARY ANN WILLIAMSONCredential: NP
Location Address2185 PACHECO STConcord, CA 94520-2309
Mailing Address2185 Pacheco StConcord, CA 94520-2309 · (925) 676-0505 · Fax (925) 676-2814
Phone(925) 676-0505
Fax(925) 676-2814
Sole ProprietorNo
Enumeration DateNovember 22, 2011
Last NPPES UpdateJuly 30, 2015
✔ NPI 1699042457 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 · 2400
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.
2185 PACHECO ST, Concord, CA 94520
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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.

PROF. RACHEL RASMUSSEN
Registered Nurse
2185 PACHECO ST
CONCORD, CA 94520
Contra Costa County (925) 676-0505
KAREN RICE
Physician Assistant (Medical)
2185 PACHECO ST
CONCORD, CA 94520
Contra Costa County (925) 887-5218
JESSICA RUBY OQVIST BELLO LM
Midwife
2185 PACHECO ST
CONCORD, CA 94520
Contra Costa County (925) 676-0505
KAITE GO
Nurse Practitioner (Family)
2185 PACHECO ST
CONCORD, CA 94520
Contra Costa County (925) 676-0300
HANNAH KATHLEEN SLATER BSN, RN, MPH
Registered Nurse
2185 PACHECO ST
CONCORD, CA 94520
Contra Costa County (925) 676-0505
MADELINE SPAHR CNM
Advanced Practice Midwife
2185 PACHECO ST
CONCORD, CA 94520
Contra Costa County (925) 676-0300
REIKO CELESTE SENTENO RN
Registered Nurse
2185 PACHECO ST
CONCORD, CA 94520
Contra Costa County (925) 676-0505
LAURA DEELY
Registered Nurse
2185 PACHECO ST
CONCORD, CA 94520
Contra Costa County (925) 676-0505

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 Mary Williamson's NPI number?

The NPI number for Mary Williamson is 1699042457. It was assigned to this individual provider in the NPPES registry on November 22, 2011.

Where is Mary Williamson located?

Mary Williamson practices at 2185 Pacheco St, Concord, CA 94520. The listed phone number is (925) 676-0505.

What is Mary Williamson's specialty?

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

When was this NPI record last updated?

The NPPES record for Mary Williamson was last updated on July 30, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.