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

Individual provider Maternal & Fetal Medicine Physician · NPI 1205272341

Dr. Katherine Mae Massa, MD is an Obstetrics/Gynecology in Saint Louis, Missouri. Graduated from Temple University School of Medicine in 2013, 13 years ago. Practices with Washington University Physicians in Illinois Inc, a 167-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
13
Trained at
Temple University School of Medicine
Licensed in
MO
In the registry since
2013
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

4901 Forest Park Ave Div OBGYN Mfm And US Ste 710
Saint Louis, MO 63108-1495
Phone: (314) 454-8181
Fax: (314) 747-1429
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Maternal & Fetal Medicine Physician (primary) Taxonomy 207VM0101X · Licence 2017013416 (MO)

Record details

NPI number1205272341
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 16, 2013
Last updated in NPPESApril 17, 2025

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolTEMPLE UNIVERSITY SCHOOL OF MEDICINE
Graduated 2013 (13 years in practice)
Group practice Washington University Physicians In Illinois Inc — 167 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 on file with Medicare

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