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

Heather Stephanie McMillen, CRNA

Individual provider Certified Registered Nurse Anesthetist · NPI 1366770117

Heather Stephanie McMillen, CRNA is registered under Certified Registered Nurse Anesthetist (CRNA) in Ballwin, Missouri. Graduated from Oregon Health Sciences University School of Medicine in 2011, 15 years ago. Practices with Santiam Memorial Hospital, a 125-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
15
Trained at
Oregon Health Sciences University School of Medicine
Licensed in
MO
In the registry since
2009
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

339 Consort Dr
Ballwin, MO 63011-4439 Not confirmed with CMS for 13 years — call before visiting
Phone: (503) 851-7603
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Certified Registered Nurse Anesthetist (primary) Taxonomy 367500000X · Licence 089666 (MO)

Record details

NPI number1366770117
Entity typeIndividual (Type 1)
GenderFemale
Credentials CRNA
Sole proprietorNo
NPI enumeratedDecember 4, 2009
Last updated in NPPESFebruary 14, 2013

Medicare enrollment

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

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOREGON HEALTH SCIENCES UNIVERSITY SCHOOL OF MEDICINE
Graduated 2011 (15 years in practice)
Group practice Santiam Memorial Hospital — 125 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients51
Services billed 69 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.

  • Santiam Hospital & Clinics Hospital · Stayton, OR

Colleagues at Santiam Memorial Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 125 clinicians in the practice; 12 are shown here.

Other providers in Ballwin