Alyssa Fieseler, LCSW
NPI 1457902835 · Clinical Social Worker · Littleton, CO
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alyssa Fieseler, LCSW is a Clinical Social Worker provider in Littleton, CO (NPI 1457902835).
Provider details
- NPI number
- 1457902835
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- CSW.09925507 (CO)
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
6 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
- 2019-09-26
- Last updated
- 2026-03-04
- Certified
- 2026-03-04
Frequently asked questions
- What is Alyssa Fieseler's NPI number?
- Alyssa Fieseler's National Provider Identifier (NPI) is 1457902835, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alyssa Fieseler's specialty?
- Alyssa Fieseler is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Alyssa Fieseler located?
- Alyssa Fieseler's practice location on file with NPPES is 5911 Middlefield Rd Ste 100, Littleton, CO 80123-2893.
- What is Alyssa Fieseler's phone number?
- The practice phone number listed in the NPPES registry for Alyssa Fieseler is (630) 624-1080.
- Does Alyssa Fieseler accept Medicare?
- Alyssa Fieseler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alyssa Fieseler's NPI active?
- Yes — Alyssa Fieseler's NPI (1457902835) is active in the NPPES registry as of the last update on 2026-03-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.