Karissa Chisum, PMHNP-BC
NPI 1558042101 · Psychiatric/Mental Health Nurse Practitioner · Costa Mesa, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karissa Chisum, PMHNP-BC is a Psychiatric/Mental Health Nurse Practitioner provider in Costa Mesa, CA (NPI 1558042101).
Provider details
- NPI number
- 1558042101
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PMHNP-BC
- Sex
- Female
- Sole proprietor
- Yes
- License
- 95082085 (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
2 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 2900 Bristol StBuilding H, St 201Costa Mesa, CA 92626Phone: (714) 617-7556
Registry dates
- Enumerated
- 2023-07-27
- Last updated
- 2024-05-24
- Certified
- 2024-05-24
Frequently asked questions
- What is Karissa Chisum's NPI number?
- Karissa Chisum's National Provider Identifier (NPI) is 1558042101, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karissa Chisum's specialty?
- Karissa Chisum is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karissa Chisum located?
- Karissa Chisum's practice location on file with NPPES is 1640 Newport Blvd Ste 110, Costa Mesa, CA 92627-7762.
- What is Karissa Chisum's phone number?
- The practice phone number listed in the NPPES registry for Karissa Chisum is (925) 282-1778.
- Does Karissa Chisum accept Medicare?
- Karissa Chisum is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karissa Chisum's NPI active?
- Yes — Karissa Chisum's NPI (1558042101) is active in the NPPES registry as of the last update on 2024-05-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.