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

Marissa Lewis, MD

Individual provider Emergency Medicine Physician · NPI 1164874822

Marissa Lewis, MD is an Emergency Medicine in Saint Louis, Missouri. Graduated from Medical College of Wisconsin in 2016, 10 years ago. Practices with Mercy Hospital South, a 42-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
10
Trained at
Medical College of Wisconsin
Licensed in
MO
In the registry since
2016
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

660 S Euclid Ave
Saint Louis, MO 63110-1010
Phone: (314) 747-4156
Show map & directions

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

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 2019016334 (MO)

Record details

NPI number1164874822
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 6, 2016
Last updated in NPPESOctober 25, 2023
Certification dateOctober 25, 2023

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolMEDICAL COLLEGE OF WISCONSIN
Graduated 2016 (10 years in practice)
Group practice Mercy Hospital South — 42 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Saint Louis