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

Mrs. Krista D Woelfel, MSN, FNP

Individual provider Family Nurse Practitioner · NPI 1881632990

Mrs. Krista D Woelfel, MSN, FNP is a Nurse Practitioner in St Peters, Missouri. Qualified in 1999, 27 years ago. Practices with Mercy ACO Clinical Services Inc, a 138-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Missouri.

Years since qualifying
27
Licensed in
MO
In the registry since
2006
What do these letters mean?
MSN — Master of Science in Nursing
A graduate nursing degree, usually held alongside an advanced practice licence.
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

107 Piper Hill Dr Ste 100
St Peters, MO 63376-1620 Not confirmed with CMS for 11 years — call before visiting
Phone: (636) 477-8757
Fax: (314) 219-6241
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

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence RN 122658 (MO)

Record details

NPI number1881632990
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSN , FNP
Sole proprietorNo
NPI enumeratedJune 2, 2006
Last updated in NPPESApril 24, 2015

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 1999 (27 years in practice)
Group practice Mercy Aco Clinical Services Inc — 138 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 patients28
Services billed 30 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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 Mercy ACO Clinical Services Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 138 clinicians in the practice; 12 are shown here.

Other providers in St Peters