Karen Mayo, FNP-BC
NPI 1144521758 · Family Nurse Practitioner · Mather, CA
Enrolled with Medicare as Order and Referring Only - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Mayo, FNP-BC is a Family Nurse Practitioner provider in Mather, CA (NPI 1144521758).
Provider details
- NPI number
- 1144521758
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- RN426218 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 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
- 2010-11-12
- Last updated
- 2010-11-12
Frequently asked questions
- What is Karen Mayo's NPI number?
- Karen Mayo's National Provider Identifier (NPI) is 1144521758, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Mayo's specialty?
- Karen Mayo is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen Mayo located?
- Karen Mayo's practice location on file with NPPES is 10535 Hospital Way, Mather, CA 95655.
- What is Karen Mayo's phone number?
- The practice phone number listed in the NPPES registry for Karen Mayo is (916) 843-7008.
- Does Karen Mayo accept Medicare?
- Karen Mayo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Mayo's NPI active?
- Yes — Karen Mayo's NPI (1144521758) is active in the NPPES registry as of the last update on 2010-11-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.