Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

MS. Christen Marie Elfrink, MSN, ANP-BC

Individual provider Nurse Practitioner · NPI 1700163458

MS. Christen Marie Elfrink, MSN, ANP-BC is a Nurse Practitioner in Saint Louis, Missouri. Qualified in 2011, 15 years ago. Practices with Mercy Clinic East Communities, a 573-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
15
Licensed in
MO
In the registry since
2011
What do these letters mean?
MSN — Master of Science in Nursing
A graduate nursing degree, usually held alongside an advanced practice licence.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

4921 Parkview Pl 7th Fl
Saint Louis, MO 63110-1032 Not confirmed with CMS for 11 years — call before visiting
Phone: (314) 747-1171
Fax: (314) 362-3192
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence 2011036531 (MO)

Record details

NPI number1700163458
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSN , ANP-BC
Sole proprietorNo
NPI enumeratedNovember 9, 2011
Last updated in NPPESDecember 2, 2014

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Group practice Mercy Clinic East Communities — 573 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 patients86
Services billed 241 a service is one billed item, such as a visit, a test or a procedure
Average patient age82

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.

  • Mercy Hospital Washington Hospital · Washington, MO

Colleagues at Mercy Clinic East Communities

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 573 clinicians in the practice; 12 are shown here.

Other providers in Saint Louis