Bess A. Marshall, MD
Pediatric Endocrinology Physician · Saint Louis, MO
Bess A. Marshall, MD is a pediatric endocrinology physician with a practice address in Saint Louis, Missouri, and NPI 1164440681, issued on Jul 17, 2006. Check the license (Missouri R5N26, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Bess A. Marshall
- Credential
- MD
- Primary taxonomy
- Pediatric Endocrinology Physician 2080P0205X
- License number
- R5N26 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1 Childrens PL, Saint Louis, MO 63110
- Phone
- (314) 454-6051
- Enumerated
- Jul 17, 2006
- Record last updated
- Apr 17, 2025
- Fax
- (314) 454-6225
- Medicaid ID
- 203675301 MO
- Medicare enrollment
- Enrolled (PECOS I20071126000190); accepts Medicare assignment
- Medical or professional school
- Vanderbilt University School Of Medicine, 1986
- Entity
- Type 1 · individual
8 nearest pediatric endocrinology physician records → All 58 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 Bess A. Marshall 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 R5N26Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average pediatric endocrinology physician in 2024
34 Medicare Part D claims, against an average of 105 among the 386 providers of this specialty who prescribed in Part D. Brand-name drugs were 94% of claims.
Most prescribed
- Levothyroxine Sodium27 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 79.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $138.50
1 payment: food and beverage; the largest payer was Beta Bionics, Inc. The 931 providers of this specialty with any payment received $4,382.94 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
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).
Bess A. Marshall among 58 pediatric endocrinology physician records in Missouri
Bess A. Marshall, MD is one of 58 pediatric endocrinology physician records with a practice address in Missouri. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 60% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 36% of these records are
- Graduated1986 · median 2007 among the 21 with a school on file
- Record last updated2025 · 33% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0205X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Endocrinology Physician providers in Missouri
There are 58 pediatric endocrinology physician records in Missouri.
All 58 in Missouri → Every provider in Saint Louis → Pediatric Endocrinology Physician nationwide →
The 8 pediatric endocrinology physician records with the nearest ZIP codes
- Ana Arbelaez, MDSaint Louis, MO 631101740206069
- Melanie Bryan, MDSaint Louis, MO 631101083109631
- Katherine Burgener, MDSaint Louis, MO 631101619408135
- Samuel Cortez Granados, MDSaint Louis, MO 631101255872479
- Abby Hollander, MDSaint Louis, MO 631101154347474
- Paul Hruz, MDSaint Louis, MO 631101427074731
- Kyle McNerney, MDSaint Louis, MO 631101740695188
- Stacie Shepherd, MDSaint Louis, MO 631101316112774
Common questions
What is Bess A. Marshall, MD's NPI number?
Bess A. Marshall, MD's National Provider Identifier (NPI) is 1164440681, issued on Jul 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Bess A. Marshall, MD located?
The NPPES record lists a practice address at 1 Childrens PL, Saint Louis, MO, 63110. Phone: (314) 454-6051. Providers update this record themselves, so call before visiting.
How can I verify Bess A. Marshall, MD's license?
NPPES lists Missouri license number R5N26, 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.
How much does Bess A. Marshall, MD prescribe under Medicare Part D?
In 2024, Bess A. Marshall, MD had 34 Medicare Part D claims; the average among pediatric endocrinology physician prescribers was 105. Part D covers Medicare prescriptions only.
What is Bess A. Marshall, MD's MIPS final score?
The 2023 MIPS final score is 79.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.