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

Marcia Kay Maronn Johnson, CRNA

Individual provider Certified Registered Nurse Anesthetist · NPI 1063455418

Marcia Kay Maronn Johnson, CRNA is registered under Certified Registered Nurse Anesthetist (CRNA) in Littleton, Colorado. Qualified in 1999, 27 years ago. Practices with Wray Community District Hospital, a 31-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Colorado, Iowa and Montana.

Years since qualifying
27
Licensed in
CO, IA, MT
In the registry since
2006
Specialties on file
3
What do these letters mean?
CRNA — Certified Registered Nurse Anesthetist
An advanced practice nurse who administers anaesthesia.

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Practice location Address checks out

7690 W Massey Dr
Littleton, CO 80128-6288
Phone: (970) 389-2555
Fax: (855) 742-1239
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1101 26th St S, Great Falls, MT 59405-5161 — (406) 731-8888

Specialties & licences

Certified Registered Nurse Anesthetist (primary) Taxonomy 367500000X · Licence 109150 (CO)
Certified Registered Nurse Anesthetist Taxonomy 367500000X · Licence 157592 (MT)
Certified Registered Nurse Anesthetist Taxonomy 367500000X · Licence D095023 (IA)

Record details

NPI number1063455418
Entity typeIndividual (Type 1)
GenderFemale
Credentials CRNA
Sole proprietorNo
NPI enumeratedJune 14, 2006
Last updated in NPPESSeptember 18, 2025
Certification dateSeptember 18, 2025

Medicare enrollment

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

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 1999 (27 years in practice)
Group practice Wray Community District Hospital — 31 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 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 patients18
Services billed 23 a service is one billed item, such as a visit, a test or a procedure
Average patient age69

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.

  • San Luis Valley Regional Medical Center Hospital · Alamosa, CO

Colleagues at Wray Community District Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 31 clinicians in the practice; 12 are shown here.

Other providers in Littleton