Kelli Sieczkowski, LCSW
NPI 1740459460 · Clinical Social Worker · Flagstaff, AZ
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kelli Sieczkowski, LCSW is a Clinical Social Worker provider in Flagstaff, AZ (NPI 1740459460).
Provider details
- NPI number
- 1740459460
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- LCSW10655 (AZ)
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
18 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
- 2008-02-27
- Last updated
- 2008-02-27
Frequently asked questions
- What is Kelli Sieczkowski's NPI number?
- Kelli Sieczkowski's National Provider Identifier (NPI) is 1740459460, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kelli Sieczkowski's specialty?
- Kelli Sieczkowski is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Kelli Sieczkowski located?
- Kelli Sieczkowski's practice location on file with NPPES is 408 N Kendrick St, Flagstaff, AZ 86001-1582.
- What is Kelli Sieczkowski's phone number?
- The practice phone number listed in the NPPES registry for Kelli Sieczkowski is (928) 774-6364.
- Does Kelli Sieczkowski accept Medicare?
- Kelli Sieczkowski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kelli Sieczkowski's NPI active?
- Yes — Kelli Sieczkowski's NPI (1740459460) is active in the NPPES registry as of the last update on 2008-02-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.