Joanne Seitz, RNC, NP
NPI 1457356230 · Women's Health Nurse Practitioner · Castro Valley, CA
Joanne Seitz, RNC, NP is a Women's Health Nurse Practitioner provider in Castro Valley, CA (NPI 1457356230).
Provider details
- NPI number
- 1457356230
- Entity type
- Individual
- Primary specialty
- Women's Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- RNC, NP
- Sex
- Female
- License
- 384671 (CA)
Specialties & taxonomies
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
21 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
- 2005-06-17
- Last updated
- 2007-07-08
Frequently asked questions
- What is Joanne Seitz's NPI number?
- Joanne Seitz's National Provider Identifier (NPI) is 1457356230, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joanne Seitz's specialty?
- Joanne Seitz is listed in the NPPES registry with a primary specialty of Women's Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Joanne Seitz located?
- Joanne Seitz's practice location on file with NPPES is 19845 Lake Chabot Rd, Castro Valley, CA 94546-4055.
- What is Joanne Seitz's phone number?
- The practice phone number listed in the NPPES registry for Joanne Seitz is (510) 886-3400.
- Is Joanne Seitz's NPI active?
- Yes — Joanne Seitz's NPI (1457356230) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.