MRS. KASSANDRA DOWANE NEFF-CASTELLANOS FNP-C
NPI 1699012187
Nurse Practitioner in Denver, CO

Q: What is Kassandra Neff-castellanos's NPI number?

The NPI number for Kassandra Neff-castellanos is 1699012187. It was assigned to this individual provider in the NPPES registry on January 3, 2013.

Q: What is Kassandra Neff-castellanos's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Active since January 03, 2013PECOS EnrolledAccepts Medicare Assignment

2045 N FRANKLIN ST, DENVER, CO 80205(303) 338-4545 Get Directions Write a Review

NPPES record last updated: June 18, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jun 18, 2021, Aug 17, 2018, Sep 29, 2016 and 1 more (4 updates tracked since 2016).

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About Mrs. Kassandra Dowane Neff-castellanos Fnp-c NPPES

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

MRS. KASSANDRA DOWANE NEFF-CASTELLANOS FNP-C (NPI 1699012187) is an individual nurse practitioner in Denver, Colorado, licensed in Colorado (APN.0992254-NP) and active in the NPI registry since January 2013. She is enrolled in Medicare PECOS and is a graduate of Other (2015).

NPPES Registry Identity

NPI1699012187

Entity TypeIndividualFemale

Primary Taxonomy363L00000X

Provider Legal NameMRS. KASSANDRA DOWANE NEFF-CASTELLANOSCredential: FNP-C

Location Address2045 N FRANKLIN STDenver, CO 80205

Mailing Address10350 E Dakota AveDenver, CO 80247-1314

Phone(303) 338-4545

Sole ProprietorNo

Medical School CMSOtherGraduated 2015

Enumeration DateJanuary 3, 2013

Last NPPES UpdateJune 18, 20214 updates tracked since enumeration

NPPES CertifiedJune 18, 2021

✔ NPI 1699012187 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363L00000X

License✔ Licensed in CO · APN.0992254-NP

Definition

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

2045 N FRANKLIN ST, Denver, CO 80205

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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 and accepts Medicare assignment

Mrs. Kassandra Dowane Neff-castellanos Fnp-c 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 ID2062711641

PECOS Enrollment IDI20160503001909

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 Kassandra Neff-castellanos reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Colorado Permanente Medical Group, P.C.

6.0 mi

Internal Medicine

10350 E DAKOTA AVE
Denver, CO 80247

Reassigned Medicare billing, Colorado enrollment
Medicare enrollment name: Colorado Permanente Medical Group PC
1,715 clinicians in this Medicare group

NPI 1760599724 (303) 338-4545

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 80205 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

$89.43 typical visit price

range $58.06 – $174.82

Typical copayment $22.35 (range $14.51 – $43.70)

Most-billed visit code 99203

Established Patient

$102.03 typical visit price

range $18.88 – $142.79

Typical copayment $25.50 (range $4.72 – $35.69)

Most-billed visit code 99214

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 20

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

DR. ROBERT WARD BURMAN M.D., PH.D.

Radiology (Diagnostic Radiology)