Mary Rui Yu, MD
Emergency Medicine Physician · Saint Louis, MO
Mary Rui Yu, MD is an emergency medicine physician with a practice address in Saint Louis, Missouri, and NPI 1861807026, issued on Jun 26, 2014. Check the license (Missouri 2016011166, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Mary Rui Yu
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 2016011166 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1 Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110
- Phone
- (314) 362-5000
- Enumerated
- Jun 26, 2014
- Record last updated
- Aug 10, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20241030002247); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,405 in Missouri → Look up another NPI →
Also registered at 1 Barnes-Jewish Hospital Plaza
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tyler Kennedy, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1194558486
- Sopan Lahewala, M.D.Cardiovascular Disease Physician1376910612
- Fred Pohlman, MD, MPHStudent in an Organized Health Care Education/Training Program1629728316
Verify Mary Rui Yu 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 2016011166Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average emergency medicine physician in 2024
65 Medicare Part D claims for 56 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Cephalexin11 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.
Bills Medicare through one group practice
- Emergency Services Midwest SCBelleville, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Rui Yu among 1,405 emergency medicine physician records in Missouri
Mary Rui Yu, MD is one of 1,405 emergency medicine physician records with a practice address in Missouri. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 63% of them.
- NPI issued2014 · 63% of these records are older, 34% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2014 · median 2012 among the 808 with a school on file
- Record last updated2021 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
398 emergency medicine physician records list a practice address in Saint Louis
They are 398 of the 27,605 NPPES records with a practice address in Saint Louis, and 1,405 emergency medicine physician records in Missouri.
All 1,405 in Missouri → Every provider in Saint Louis → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- David Amin, MDSaint Louis, MO 631101528003787
- Brian Cohn, MDSaint Louis, MO 631101649206061
- Brian Froelke, MDSaint Louis, MO 631101114951233
- Gary Gambill, MDSaint Louis, MO 631101346282837
- Richard Griffey, MDSaint Louis, MO 631101023075405
- Kamal Gursahani, MDSaint Louis, MO 631101396760849
- Reuben Johnson, MDSaint Louis, MO 631101174563217
- Richard Schmidt, MDSaint Louis, MO 631101437133501
Common questions
What is Mary Rui Yu, MD's NPI number?
Mary Rui Yu, MD's National Provider Identifier (NPI) is 1861807026, issued on Jun 26, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Mary Rui Yu, MD located?
The NPPES record lists a practice address at 1 Barnes-Jewish Hospital Plaza, Saint Louis, MO, 63110. Phone: (314) 362-5000. Providers update this record themselves, so call before visiting.
How can I verify Mary Rui Yu, MD's license?
NPPES lists Missouri license number 2016011166, 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 Mary Rui Yu, MD prescribe under Medicare Part D?
In 2024, Mary Rui Yu, MD had 65 Medicare Part D claims for 56 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
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.