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ALYSSA FIESELER LCSW
NPI 1457902835
Social Worker - Clinical in Littleton, CO

Active since September 26, 2019PECOS Enrolled
5911 MIDDLEFIELD RD STE 100, LITTLETON, CO 80123(630) 624-1080 Get Directions Write a Review

NPPES record last updated: March 4, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 4, 2026, May 16, 2023, Sep 26, 2019 (3 updates tracked since 2019).

About Alyssa Fieseler Lcsw NPPES

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

ALYSSA FIESELER LCSW (NPI 1457902835) is an individual clinical provider in Littleton, Colorado, licensed in Colorado (CSW.09925507) and active in the NPI registry since September 2019. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1457902835
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameALYSSA FIESELERCredential: LCSW
Location Address5911 MIDDLEFIELD RD STE 100Littleton, CO 80123-2893
Mailing Address5941 Middlefield Rd Ste 201Littleton, CO 80123-7937 · (970) 310-3406
Phone(630) 624-1080
Sole ProprietorNo
Enumeration DateSeptember 26, 2019
Last NPPES UpdateMarch 4, 20263 updates tracked since enumeration
NPPES CertifiedMarch 4, 2026
✔ NPI 1457902835 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 CO · CSW.09925507
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.
5911 MIDDLEFIELD RD STE 100, Littleton, CO 80123
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Alyssa Fieseler Lcsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignment

Medicare enrollment records show Alyssa Fieseler reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Heart Centered Counseling, PC
Same address
Mental Health
5941 MIDDLEFIELD RD STE 201
Littleton, CO 80123
  • Reassigned Medicare billing, Colorado enrollment
  • 390 clinicians in this Medicare group
NPI 1083254312 (970) 310-3406

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 80123 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 $58.06 – $174.82
Typical copayment $0.00 (range $14.51 – $43.70)
Most-billed visit code NA
Established Patient
$72.20 typical visit price
range $18.88 – $142.79
Typical copayment $18.05 (range $4.72 – $35.69)
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 2

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

MARTHA CATHERINE JOHNSON
Counselor (Mental Health)
5911 MIDDLEFIELD RD STE 100
LITTLETON, CO 80123
Jefferson County (804) 245-9997
AMBER MORRIS PMHNP
Nurse Practitioner (Psychiatric/Mental Health)
5911 MIDDLEFIELD RD STE 100
LITTLETON, CO 80123
Jefferson County (970) 310-3406

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 Alyssa Fieseler's NPI number?

The NPI number for Alyssa Fieseler is 1457902835. It was assigned to this individual provider in the NPPES registry on September 26, 2019.

Where is Alyssa Fieseler located?

Alyssa Fieseler practices at 5911 Middlefield Rd Ste 100, Littleton, CO 80123. The listed phone number is (630) 624-1080.

What is Alyssa Fieseler's specialty?

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

Is Alyssa Fieseler enrolled in Medicare?

Yes. Alyssa Fieseler is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Alyssa Fieseler's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alyssa Fieseler reassigns Medicare benefits to Heart Centered Counseling, PC (Littleton, CO). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Alyssa Fieseler's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Alyssa Fieseler was last updated on March 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months 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.