Charles Karsters
NPI 1881990141 · Behavior Analyst · Honolulu, HI
Enrolled with Medicare as Practitioner - Mental Health Counselor · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Karsters is a Behavior Analyst provider in Honolulu, HI (NPI 1881990141).
Provider details
- NPI number
- 1881990141
- Entity type
- Individual
- Primary specialty
- Behavior AnalystBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Mental Health Counselor101YM0800X
Behavioral Health & Social 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
83% 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
- 2011-02-03
- Last updated
- 2022-03-22
- Certified
- 2022-03-22
Frequently asked questions
- What is Charles Karsters's NPI number?
- Charles Karsters's National Provider Identifier (NPI) is 1881990141, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Karsters's specialty?
- Charles Karsters is listed in the NPPES registry with a primary specialty of Behavior Analyst (Behavioral Health & Social Service Providers).
- Where is Charles Karsters located?
- Charles Karsters's practice location on file with NPPES is 1663 Liholiho St Apt 1, Honolulu, HI 96822-2948.
- What is Charles Karsters's phone number?
- The practice phone number listed in the NPPES registry for Charles Karsters is (808) 336-7270.
- Does Charles Karsters accept Medicare?
- Charles Karsters is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Karsters's NPI active?
- Yes — Charles Karsters's NPI (1881990141) is active in the NPPES registry as of the last update on 2022-03-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.