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

Individual provider Family Medicine Physician · NPI 1588892665

Dr. Alyssa Leigh Keller, MD is a Family Practice in O Fallon, Missouri. Graduated from University of Missouri, Columbia School of Medicine in 2009, 17 years ago. Practices with Mercy Clinic East Communities, a 573-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Missouri.

Years since qualifying
17
Trained at
University of Missouri, Columbia School of Medicine
Licensed in
MO
In the registry since
2009
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 222
O Fallon, MO 63366-4771
Phone: (636) 978-8600
Fax: (636) 978-8602
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 2009017184 (MO)

Record details

NPI number1588892665
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 26, 2009
Last updated in NPPESJune 30, 2012

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF MISSOURI, COLUMBIA SCHOOL OF MEDICINE
Graduated 2009 (17 years in practice)
Group practice Mercy Clinic East Communities — 573 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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