Rachel Lynn Guess, MD
Pediatric Rheumatology Physician · Saint Louis, MO
Rachel Lynn Guess, MD is a pediatric rheumatology physician with a practice address in Saint Louis, Missouri, and NPI 1629566278, issued on Apr 30, 2018. Check the license (Missouri 2022025250, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Rachel Lynn Guess
- Credential
- MD
- Primary taxonomy
- Pediatric Rheumatology Physician 2080P0216X
- License number
- 2022025250 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1 Childrens PL, Saint Louis, MO 63110
- Phone
- (314) 454-6124
- Enumerated
- Apr 30, 2018
- Record last updated
- Aug 13, 2025
- Fax
- (844) 616-1418
- Medicaid ID
- 200112918 MO
- Medicare enrollment
- Enrolled (PECOS I20250630003459); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At San Antonio, 2018
- Entity
- Type 1 · individual
8 nearest pediatric rheumatology physician records → All 29 in Missouri → Look up another NPI →
Also registered at 1 Childrens PL
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mohamed Abdelbaki, MDPediatric Hematology & Oncology Physician1508021361
- Christi Abeln, PNPPediatric Nurse Practitioner1023034253
- Loren Abernathy, PNPPediatric Nurse Practitioner1215583117
- Freddy-May Abisamra, CGCGenetic Counselor (M.S.)1306538111
- Manjusha Abraham, MDPediatric Critical Care Medicine Physician1508126699
- Philip Abraham, MDHospitalist Physician1720309016
Verify Rachel Lynn Guess in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2022025250Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Washington UniversitySaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rachel Lynn Guess among 29 pediatric rheumatology physician records in Missouri
Rachel Lynn Guess, MD is one of 29 pediatric rheumatology physician records with a practice address in Missouri. 52% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 86% of them.
- NPI issued2018 · 86% of these records are older, 3% newer
- In a Medicare fileYes · 52% of these records are
- In the CMS Doctors and Clinicians fileYes · 24% of these records are
- Record last updated2025 · 28% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0216X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Rheumatology Physician providers in Missouri
There are 29 pediatric rheumatology physician records in Missouri.
All 29 in Missouri → Every provider in Saint Louis → Pediatric Rheumatology Physician nationwide →
The 8 pediatric rheumatology physician records with the nearest ZIP codes
- Kevin Baszis, MDSaint Louis, MO 631101366628349
- Tarin Bigley, MDSaint Louis, MO 631101912357989
- Megan Cooper, MDSaint Louis, MO 631101245405604
- Leslie Fogel, MDSaint Louis, MO 631101972953115
- Lampros Fotis, MDSaint Louis, MO 631101417381237
- Anthony French, MDSaint Louis, MO 631101528084746
- Maleewan Kitcharoensakkul, MDSaint Louis, MO 631101609031558
- Bradley Ornstein, MDSaint Louis, MO 631101679759617
Common questions
What is Rachel Lynn Guess, MD's NPI number?
Rachel Lynn Guess, MD's National Provider Identifier (NPI) is 1629566278, issued on Apr 30, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Rachel Lynn Guess, MD located?
The NPPES record lists a practice address at 1 Childrens PL, Saint Louis, MO, 63110. Phone: (314) 454-6124. Providers update this record themselves, so call before visiting.
How can I verify Rachel Lynn Guess, MD's license?
NPPES lists Missouri license number 2022025250, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.