Istvan Felker, DDS
NPI 1215920715 · Dentist · Susanville, CA
Enrolled with Medicare as Order and Referring Only - Dentist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Istvan Felker, DDS is a Dentist provider in Susanville, CA (NPI 1215920715).
Provider details
- NPI number
- 1215920715
- Entity type
- Individual
- Primary specialty
- DentistDental Providers
- Credential
- DDS
- Sex
- Male
- Sole proprietor
- No
- License
- 49311 (CA)
Specialties & taxonomies
Dental Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
- 2005-08-30
- Last updated
- 2011-06-10
Frequently asked questions
- What is Istvan Felker's NPI number?
- Istvan Felker's National Provider Identifier (NPI) is 1215920715, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Istvan Felker's specialty?
- Istvan Felker is listed in the NPPES registry with a primary specialty of Dentist (Dental Providers).
- Where is Istvan Felker located?
- Istvan Felker's practice location on file with NPPES is 1850 Spring Ridge Dr, Susanville, CA 96130-6100.
- What is Istvan Felker's phone number?
- The practice phone number listed in the NPPES registry for Istvan Felker is (530) 251-5000.
- Does Istvan Felker accept Medicare?
- Istvan Felker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Istvan Felker's NPI active?
- Yes — Istvan Felker's NPI (1215920715) is active in the NPPES registry as of the last update on 2011-06-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.