Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mrs. Kassandra Dowane Neff-Castellanos, FNP-C

Individual provider Nurse Practitioner · NPI 1699012187

Mrs. Kassandra Dowane Neff-Castellanos, FNP-C is a Nurse Practitioner in Denver, Colorado. Qualified in 2015, 11 years ago. Practices with Colorado Permanente Medical Group PC, a 1,325-clinician group and accepts Medicare assignment. Licensed in Colorado.

Years since qualifying
11
Licensed in
CO
In the registry since
2013
What do these letters mean?
FNP-C — Family Nurse Practitioner, Certified
A family nurse practitioner certified by the AANP.

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Practice location Address checks out

2045 N Franklin St
Denver, CO 80205
Phone: (303) 338-4545
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence APN.0992254-NP (CO)

Record details

NPI number1699012187
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP-C
Sole proprietorNo
NPI enumeratedJanuary 3, 2013
Last updated in NPPESJune 18, 2021
Certification dateJune 18, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Group practice Colorado Permanente Medical Group Pc — 1325 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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