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

Dr. Margaretta Lynn Mendenhall, MD

Individual provider Obstetrics & Gynecology Physician · NPI 1275730111

Dr. Margaretta Lynn Mendenhall, MD is an Obstetrics/Gynecology in O Fallon, Missouri. Graduated from Saint Louis University School of Medicine in 2007, 19 years ago. Practices with Mercy Clinic East Communities, a 573-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
19
Trained at
Saint Louis University School of Medicine
Licensed in
MO
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

300 Winding Woods Dr Ste 200
O Fallon, MO 63366-4771
Phone: (636) 240-0130
Fax: (636) 240-6822
Show map & directions

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

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence 2011009917 (MO)

Record details

NPI number1275730111
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 2, 2007
Last updated in NPPESMarch 11, 2014

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolSAINT LOUIS UNIVERSITY SCHOOL OF MEDICINE
Graduated 2007 (19 years in practice)
Group practice Mercy Clinic East Communities — 573 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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