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

Dr. Andrew Mayo, MD

Individual provider Obstetrics & Gynecology Physician · NPI 1598150393

Dr. Andrew Mayo, MD is an Obstetrics/Gynecology in Saint Louis, Missouri. Qualified in 2013, 13 years ago. Practices with Mercy Womens Services LLC, a 13-clinician group and accepts Medicare assignment. Licensed in California, Illinois and Missouri.

Years since qualifying
13
Licensed in
CA, IL, MO
In the registry since
2015
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

621 S New Ballas Rd Ste 1400
Saint Louis, MO 63141-8232
Phone: (314) 251-7498
Fax: (314) 251-4376
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

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence 2021016699 (MO)
Obstetrics & Gynecology Physician Taxonomy 207V00000X · Licence A135348 (CA)
Obstetrics & Gynecology Physician Taxonomy 207V00000X · Licence 036.143820 (IL)

Record details

NPI number1598150393
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 30, 2015
Last updated in NPPESJuly 13, 2021
Certification dateJuly 13, 2021

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Group practice Mercy Womens Services Llc — 13 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in Saint Louis