Karen Schreiber, NP
NPI 1770664211 · Family Nurse Practitioner · Sunnyvale, CA
Karen Schreiber, NP is a Family Nurse Practitioner provider in Sunnyvale, CA (NPI 1770664211).
Provider details
- NPI number
- 1770664211
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 285456 (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
19 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
- 2006-10-18
- Last updated
- 2007-07-08
Frequently asked questions
- What is Karen Schreiber's NPI number?
- Karen Schreiber's National Provider Identifier (NPI) is 1770664211, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Schreiber's specialty?
- Karen Schreiber is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen Schreiber located?
- Karen Schreiber's practice location on file with NPPES is 576 E. El Camino Real, Sunnyvale, CA 94087.
- What is Karen Schreiber's phone number?
- The practice phone number listed in the NPPES registry for Karen Schreiber is (408) 733-4444.
- Is Karen Schreiber's NPI active?
- Yes — Karen Schreiber's NPI (1770664211) 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.