Whitney Halvorsen, NP
NPI 1881315869 · Psychiatric/Mental Health Nurse Practitioner · Martinez, CA
Whitney Halvorsen, NP is a Psychiatric/Mental Health Nurse Practitioner provider in Martinez, CA (NPI 1881315869).
Provider details
- NPI number
- 1881315869
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 9391 (MN)
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
3 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
- 2022-09-07
- Last updated
- 2022-09-07
- Certified
- 2022-09-07
Frequently asked questions
- What is Whitney Halvorsen's NPI number?
- Whitney Halvorsen's National Provider Identifier (NPI) is 1881315869, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Whitney Halvorsen's specialty?
- Whitney Halvorsen is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Whitney Halvorsen located?
- Whitney Halvorsen's practice location on file with NPPES is 150 Muir Rd, Martinez, CA 94553-4668.
- What is Whitney Halvorsen's phone number?
- The practice phone number listed in the NPPES registry for Whitney Halvorsen is (925) 372-2000.
- Is Whitney Halvorsen's NPI active?
- Yes — Whitney Halvorsen's NPI (1881315869) is active in the NPPES registry as of the last update on 2022-09-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.