Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Leah Ayn Mergen, PA-C

Individual provider Physician Assistant · NPI 1023389392

Leah Ayn Mergen, PA-C is a Physician Assistant in Sioux Falls, South Dakota. Qualified in 2011, 15 years ago. Practices with Avera McKennan, a 962-clinician group and accepts Medicare assignment. Licensed in South Dakota.

Years since qualifying
15
Licensed in
SD
In the registry since
2012
What do these letters mean?
PA-C — Physician Assistant, Certified
A physician assistant who holds current national certification.

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Practice location Address checks out

521 N Main Ave Ste 100
Sioux Falls, SD 57104-5947
Phone: (605) 367-8214
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence 0799 (SD)

Record details

NPI number1023389392
Entity typeIndividual (Type 1)
GenderFemale
Credentials PA-C
Sole proprietorNo
NPI enumeratedJanuary 19, 2012
Last updated in NPPESAugust 29, 2017

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Group practice Avera McKennan — 962 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in Sioux Falls