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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

CASSIE BRIANNE GRABIANOWSKI
NPI 1346165628
Nurse Practitioner - Pediatrics in Denver, CO

Active since August 13, 2026
777 BANNOCK ST, DENVER, CO 80204(303) 810-4829 Get Directions Write a Review

NPPES record added: September 5, 2026. Verified against the NPPES registry weekly; last sync: September 06, 2026.

Record update history: Sep 5, 2026, Aug 13, 2026 (2 updates tracked since 2026).

About Cassie Brianne Grabianowski NPPES

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

CASSIE BRIANNE GRABIANOWSKI (NPI 1346165628) is an individual pediatrics provider in Denver, Colorado, licensed in Colorado (APN.1002366-NP) and active in the NPI registry since August 2026.

NPPES Registry Identity

NPI1346165628
Entity TypeIndividualFemale
Primary Taxonomy363LP0200X
Provider Legal NameCASSIE BRIANNE GRABIANOWSKI
Location Address777 BANNOCK STDenver, CO 80204-4597
Mailing Address777 Bannock StDenver, CO 80204-4597 · (303) 810-4829
Phone(303) 810-4829
Sole ProprietorNo
Enumeration DateAugust 13, 2026
Last NPPES UpdateSeptember 5, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 5, 2026
✔ NPI 1346165628 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · PediatricsPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0200X
License✔ Licensed in CO · APN.1002366-NP
Also ListedRegistered Nurse · PediatricsTaxonomy 163WP0200X · License RN.1692609 (CO)
777 BANNOCK ST, Denver, CO 80204
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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.

MS. KATHERINE JEANNE CARLEY RN, MSN, CS
Clinical Nurse Specialist (Psychiatric/Mental Health)
777 BANNOCK ST
DENVER, CO 80204
Denver County (303) 436-6630
RYAN DEAN LATERZA M.D.
Anesthesiology
777 BANNOCK ST
DENVER, CO 80204
Denver County (303) 436-6000
BARBARA E ANDERSON NP
Nurse Practitioner
777 BANNOCK ST
DENVER, CO 80204
Denver County (303) 602-0340
PHILIP ANDREOLI D.O.
Hospitalist
777 BANNOCK ST
DENVER, CO 80204
Denver County (303) 436-4949
JESSICA RENEE KUDLOCK LCSW
Social Worker (Clinical)
777 BANNOCK ST
DENVER, CO 80204
Denver County (303) 602-7220
ELIZABETH PERKINS-PRIDE
Nurse Practitioner
777 BANNOCK ST
DENVER, CO 80204
Denver County (303) 436-6000
KIRSTEN ERIKSEN PA-C
Physician Assistant
777 BANNOCK ST
DENVER, CO 80204
Denver County (303) 436-6000
KATHRYN IRENE GARNER MD, MPH
Family Medicine
777 BANNOCK ST
DENVER, CO 80204
Denver County (303) 436-6000

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 Cassie Grabianowski's NPI number?

The NPI number for Cassie Grabianowski is 1346165628. It was assigned to this individual provider in the NPPES registry on August 13, 2026.

Where is Cassie Grabianowski located?

Cassie Grabianowski practices at 777 Bannock St, Denver, CO 80204. The listed phone number is (303) 810-4829.

What is Cassie Grabianowski's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.

When was this NPI record last updated?

The NPPES record for Cassie Grabianowski was last updated on September 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 days 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.