1. Home
  2. Directory
  3. Arizona
  4. Flagstaff
  5. Social Worker
  6. NPI Profile

MS. KELLI LYNN SIECZKOWSKI LCSW
NPI 1740459460
Social Worker - Clinical in Flagstaff, AZ

Active since February 27, 2008PECOS EnrolledAccepts Medicare Assignment
408 N KENDRICK ST, SUITE 3, FLAGSTAFF, AZ 86001(928) 774-6364(928) 556-0504 Get Directions Write a Review

NPPES record last updated: February 27, 2008. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Ms. Kelli Lynn Sieczkowski Lcsw NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MS. KELLI LYNN SIECZKOWSKI LCSW (NPI 1740459460) is an individual clinical provider in Flagstaff, Arizona, licensed in Arizona (LCSW10655) and active in the NPI registry since February 2008. She is enrolled in Medicare PECOS and is a graduate of Other (1998).

NPPES Registry Identity

NPI1740459460
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMS. KELLI LYNN SIECZKOWSKICredential: LCSW
Location Address408 N KENDRICK ST, SUITE 3Flagstaff, AZ 86001-1582
Mailing Address408 E. Kendrick St., Suite 3Flagstaff, AZ 86001 · (928) 774-6364 · Fax (928) 556-0504
Phone(928) 774-6364
Fax(928) 556-0504
Sole ProprietorNo
Medical School CMSOtherGraduated 1998
Enumeration DateFebruary 27, 2008
✔ NPI 1740459460 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in AZ · LCSW10655
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
408 N KENDRICK ST, Flagstaff, AZ 86001
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross Blue Shield of Arizona, Oscar Health Plan, Inc., UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Ms. Kelli Lynn Sieczkowski Lcsw is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7012100811
PECOS Enrollment IDI20101026000339
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 86001 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$0.00 typical visit price
range $55.44 – $168.60
Typical copayment $0.00 (range $13.86 – $42.15)
Most-billed visit code NA
Established Patient
$69.24 typical visit price
range $17.72 – $137.41
Typical copayment $17.31 (range $4.43 – $34.35)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 15

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

FLAGSTAFF CHILD & FAMILY COUNSELING CENTER PLLC
Psychologist
408 N KENDRICK ST, SUITE 3
FLAGSTAFF, AZ 86001
Coconino County (928) 774-6364
DEIDRE HAYES LPC
Counselor (Professional)
408 N KENDRICK ST
FLAGSTAFF, AZ 86001
Coconino County (520) 850-0192
MS. CAROLYN BARNES HARGRAVE LPC
Counselor (Professional)
408 N KENDRICK ST, SUITE 3
FLAGSTAFF, AZ 86001
Coconino County (928) 774-6364
JAMES ANDREW HOGG PH.D.
Psychologist (Counseling)
408 N KENDRICK ST, STE 4
FLAGSTAFF, AZ 86001
Coconino County (928) 774-6364
DR. TERRY WILLIAM MOORE PH.D.
Counselor (Mental Health)
408 N KENDRICK ST
FLAGSTAFF, AZ 86001
Coconino County (928) 774-6364
TARRYN EVE JOHNSON
Radiologic Technologist (Sonography)
408 N KENDRICK ST
FLAGSTAFF, AZ 86001
Coconino County (928) 421-1154
DR. LINZI BRUCH CODY LPC, PH.D.
Psychologist
408 N KENDRICK ST
FLAGSTAFF, AZ 86001
Coconino County (928) 774-6364
VICKEY SUE FINGER MSW
Social Worker (Clinical)
408 N KENDRICK ST, #3
FLAGSTAFF, AZ 86001
Coconino County (928) 774-6364

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Kelli Sieczkowski's NPI number?

The NPI number for Kelli Sieczkowski is 1740459460. It was assigned to this individual provider in the NPPES registry on February 27, 2008.

Where is Kelli Sieczkowski located?

Kelli Sieczkowski practices at 408 N Kendrick St Suite 3, Flagstaff, AZ 86001. The listed phone number is (928) 774-6364.

What is Kelli Sieczkowski's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Kelli Sieczkowski enrolled in Medicare?

Yes. Kelli Sieczkowski is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Kelli Sieczkowski accept?

Health plans from Blue Cross Blue Shield of Arizona, Oscar Health Plan, Inc. and UnitedHealthcare list Kelli Sieczkowski as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Kelli Sieczkowski was last updated on February 27, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.