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

MS. Marci K. Klaassen, NP

Individual provider Acute Care Nurse Practitioner · NPI 1841398112

MS. Marci K. Klaassen, NP is a Nurse Practitioner in Aurora, Colorado. Graduated from Perelman School of Med at the University of Pennsylvania in 2001, 25 years ago. Practices with University Physicians Incorporated, a 3,148-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Colorado.

Years since qualifying
25
Trained at
Perelman School of Med at the University of Pennsylvania
Licensed in
CO
In the registry since
2006
Specialties on file
2
What do these letters mean?
NP — Nurse Practitioner
An advanced practice nurse who can diagnose, treat and in most states prescribe.

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Practice location Address checks out

12605 E 16th Ave
Aurora, CO 80045-2545
Phone: (720) 848-0000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Adult Health Nurse Practitioner (primary) Taxonomy 363LA2200X · Licence APN.0003540-NP (CO)
Acute Care Nurse Practitioner Taxonomy 363LA2100X · Licence 130411 (CO)

Record details

NPI number1841398112
Entity typeIndividual (Type 1)
GenderFemale
Credentials NP
Sole proprietorNo
NPI enumeratedSeptember 20, 2006
Last updated in NPPESOctober 18, 2018

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolPERELMAN SCHOOL OF MED AT THE UNIVERSITY OF PENNSYLVANIA
Graduated 2001 (25 years in practice)
Group practice University Physicians Incorporated — 3148 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients35
Services billed 49 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at University Physicians Incorporated

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 3148 clinicians in the practice; 12 are shown here.

Other providers in Aurora