Katherine Fierling, L.C.S.W.
NPI 1285789990 · Mental Health Counselor · Orange, CA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Fierling, L.C.S.W. is a Mental Health Counselor provider in Orange, CA (NPI 1285789990).
Provider details
- NPI number
- 1285789990
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- L.C.S.W.
- Sex
- Female
- Sole proprietor
- Yes
- License
- LCS 8250 (CA)
Specialties & taxonomies
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
19 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
- 2007-01-24
- Last updated
- 2007-07-08
Frequently asked questions
- What is Katherine Fierling's NPI number?
- Katherine Fierling's National Provider Identifier (NPI) is 1285789990, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Fierling's specialty?
- Katherine Fierling is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Katherine Fierling located?
- Katherine Fierling's practice location on file with NPPES is 1310 W Stewart Dr, Orange, CA 92868-3854.
- What is Katherine Fierling's phone number?
- The practice phone number listed in the NPPES registry for Katherine Fierling is (714) 771-0907.
- Does Katherine Fierling accept Medicare?
- Katherine Fierling is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Fierling's NPI active?
- Yes — Katherine Fierling's NPI (1285789990) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.