Kelli Sieczkowski, PLLC
NPI 1851830582 · Community/Behavioral Health Agency · Mesa, AZ
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kelli Sieczkowski, PLLC is a Community/Behavioral Health Agency organization in Mesa, AZ (NPI 1851830582).
Provider details
- NPI number
- 1851830582
- Entity type
- Organization
- Primary specialty
- Community/Behavioral Health AgencyAgencies
- Organization subpart
- No
- Authorized official
- Kelli Sieczkowski, Owner(480) 630-0613
- License
- LCSW10655 (AZ)
Specialties & taxonomies
Agencies
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 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
- 2017-02-14
- Last updated
- 2019-07-08
Frequently asked questions
- What is Kelli Sieczkowski, PLLC's NPI number?
- Kelli Sieczkowski, PLLC's National Provider Identifier (NPI) is 1851830582, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Kelli Sieczkowski, PLLC?
- Kelli Sieczkowski, PLLC is classified in the NPPES registry as Community/Behavioral Health Agency (Agencies).
- Where is Kelli Sieczkowski, PLLC located?
- Kelli Sieczkowski, PLLC's practice location on file with NPPES is 1930 S Alma School Rd Ste D202, Mesa, AZ 85210-3045.
- What is Kelli Sieczkowski, PLLC's phone number?
- The practice phone number listed in the NPPES registry for Kelli Sieczkowski, PLLC is (480) 630-0316.
- Does Kelli Sieczkowski, PLLC accept Medicare?
- Kelli Sieczkowski, PLLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Kelli Sieczkowski, PLLC?
- The authorized official listed on Kelli Sieczkowski, PLLC's NPPES record is Kelli Sieczkowski, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Kelli Sieczkowski, PLLC's NPI active?
- Yes — Kelli Sieczkowski, PLLC's NPI (1851830582) is active in the NPPES registry as of the last update on 2019-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.