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

MS. Haydan Elizabeth Ommen, PA

Individual provider Physician Assistant · NPI 1699525121

MS. Haydan Elizabeth Ommen, PA is a Physician Assistant in Chesterfield, Missouri. Qualified in 2023, 3 years ago. Practices with Mercy Clinic Surgical Specialists LLC, a 180-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
3
Licensed in
MO
In the registry since
2024
What do these letters mean?
PA — Physician Assistant
A licensed clinician who examines, diagnoses and treats under a physician's supervision.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

14825 N Outer 40 Rd Ste 200
Chesterfield, MO 63017-2152
Phone: (314) 336-2555
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

Physician Assistant (primary) Taxonomy 363A00000X · Licence 2024006376 (MO)

Record details

NPI number1699525121
Entity typeIndividual (Type 1)
GenderFemale
Credentials PA
Sole proprietorNo
NPI enumeratedMarch 26, 2024
Last updated in NPPESFebruary 23, 2026
Certification dateFebruary 23, 2026

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2023 (3 years in practice)
Group practice Mercy Clinic Surgical Specialists Llc — 180 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

Other providers in Chesterfield