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

Dr. Rachel Lynn Guess, MD

Individual provider Pediatrics Physician · NPI 1629566278

Dr. Rachel Lynn Guess, MD is a Pediatric Medicine in Saint Louis, Missouri. Graduated from University of Texas Medical School at San Antonio in 2018, 8 years ago. Practices with Washington University, a 2,986-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
8
Trained at
University of Texas Medical School at San Antonio
Licensed in
MO
In the registry since
2018
Specialties on file
2
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

1 Childrens Pl Div Ped Rheumatology
Saint Louis, MO 63110-1002
Phone: (314) 454-6124
Fax: (844) 616-1418
Show map & directions

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

Specialties & licences

Pediatric Rheumatology Physician (primary) Taxonomy 2080P0216X · Licence 2022025250 (MO)
Pediatrics Physician Taxonomy 208000000X · Licence 2022025250 (MO)

Record details

NPI number1629566278
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 30, 2018
Last updated in NPPESAugust 13, 2025
Certification dateJuly 4, 2022

Medicare enrollment

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

Medicare specialtyPEDIATRIC MEDICINE
Also practisesRHEUMATOLOGY
Medical schoolUNIVERSITY OF TEXAS MEDICAL SCHOOL AT SAN ANTONIO
Graduated 2018 (8 years in practice)
Group practice Washington University — 2986 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Saint Louis