Dr. Mary Rui Yu, MD
- Medicare services, 2024
- 127
- Medicare patients, 2024
- 139
- Part D claims, 2024
- 65
- Hospital affiliations
- 3
- Industry payments
- $34
- Practice address
- 4500 Memorial Drive, Belleville, IL 62226
- Practice phone
- Call (618) 233-7750
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Mary Rui Yu is an emergency medicine physician in Belleville, Illinois
Dr. Yu practices at Memorial Hospital in Belleville in Belleville, Illinois, part of BJC Health.
Dr. Yu's NPI, 1861807026, was assigned on June 26, 2014. Dr. Yu holds Missouri license 2016011166.
- NPI
- 1861807026NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9335369743
- NPI enumeration date
- June 26, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (618) 233-7750
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mary Rui Yu practices at Memorial Hospital in Belleville in Belleville, Illinois
Dr. Yu's primary practice is Memorial Hospital in Belleville, at 4500 Memorial Drive, Belleville, IL 62226 in St. Clair County. The practice phone is (618) 233-7750.
- Memorial Hospital in Belleville4500 Memorial Drive, Belleville, IL 62226 · St. Clair CountyPhone(618) 233-7750
Source: Dmand AI Affiliation Data
Dr. Mary Rui Yu is affiliated with 3 sites of care and 8 medical groups
Dr. Yu's primary practice is Memorial Hospital in Belleville in Belleville, Illinois, part of BJC Health. Dr. Yu is also affiliated with Barnes-Jewish Hospital. The medical group on file is Vituity. Dmand AI also links Dr. Yu to 1 more hospital and 7 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mary Rui Yu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Yu practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Memorial Hospital in Belleville | Available with a free account |
| +2 more sites and 7 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mary Rui Yu is one of 2,385 emergency medicine physicians in Illinois
Emergency medicine is Dr. Yu's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Yu is licensed in Missouri.
Specialties and state licenses
- Emergency medicine, MissouriPrimary
Emergency medicine physicians near Dr. Yu
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Mary Rui Yu billed Medicare for 127 services in 2024
CMS data shows 127 Medicare services from Dr. Yu across 2 procedure codes in 2024, for 139 Medicare patients. Medicare paid $14,436 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Yu's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1692024: 12725%
Dr. Yu compared with the Illinois median for emergency medicine physicians, 2024
- Dr. Yu
- Illinois median
- Medicare services
- 127vs 27454% below
- Medicare patients
- 139vs 27349% below
- Part D claims
- 11vs 4576% below
Medians across 2,281 emergency medicine physicians in Illinois with Dmand AI profiles that report each measure.
Dr. Yu's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mary Rui Yu treated 139 Medicare patients in 2024, average age 74
CMS counts 139 Medicare patients who saw Dr. Yu in 2024. The largest group is 75 to 84, with 44 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 29% are also on Medicaid. Their average risk score is 2.47, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Yu's median patient age at 64, with 52% women.
Dr. Yu's Medicare patients by age, 2024
Dr. Yu's Medicare patients by sex, 2024
- Women6647%
- Men7353%
Chronic conditions among Dr. Yu's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis57%
- Anxiety53%
- Chronic kidney disease52%
- Diabetes50%
- Heart failure50%
- Mood disorders50%
Share of Medicare patients with each condition. A patient can have several.
Dr. Yu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women52%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mary Rui Yu wrote 65 Medicare Part D claims in 2024
In 2024, Dr. Yu wrote 65 Medicare Part D claims for 56 patients. 92% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $138 in total drug cost. In 2023, CMS named 28 claims across 2 drugs.
Dr. Yu's Part D claims by kind of drug, 2024
- Generic60 claims92%
- Brand-name and other5 claims8%
Dr. Yu's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Yu's Part D claims, 2024
- Antibiotics51%33 of 65 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 282024: 1161%
Drugs named by CMS: 1 in 2024, 2 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Mary Rui Yu takes part in Medicare
Dr. Yu accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Mary Rui Yu received $34 in industry payments from 2021 to 2023
CMS Open Payments shows 2 general payments to Dr. Yu from 2 drug and device companies from 2021 to 2023. Food and beverage make up the largest share, 100% of the total. BioXcel Therapeutics, Inc. paid the most, $22.
General payments to Dr. Yu by program year, 2021 to 2023
Companies that paid Dr. Yu the most, 2021 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Mary Rui Yu's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Mary Rui Yu
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Mary Rui Yu's NPI number?
Dr. Mary Rui Yu's NPI number is 1861807026. It was assigned on June 26, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Mary Rui Yu?
Dr. Mary Rui Yu is an emergency medicine physician in Belleville, Illinois. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Mary Rui Yu practice?
Dr. Yu practices at 4500 Memorial Drive, Belleville, IL 62226. Dr. Yu's primary practice is Memorial Hospital in Belleville in Belleville, Illinois, part of BJC Health. Dmand AI also links Dr. Yu to 1 hospital and 7 medical groups.
What is Dr. Mary Rui Yu's office phone number?
The practice phone on file for Dr. Yu is (618) 233-7750.
What is Dr. Mary Rui Yu's medical license number?
Dr. Yu holds Missouri license 2016011166.
Which hospitals is Dr. Mary Rui Yu affiliated with?
Dr. Yu practices at Memorial Hospital in Belleville in Belleville, Illinois. Dr. Yu is also affiliated with Barnes-Jewish Hospital. Dmand AI links Dr. Yu to 1 more hospital.
What medical group is Dr. Mary Rui Yu part of?
Dr. Yu is linked to Vituity. Dmand AI links Dr. Yu to 7 more medical groups.
Does Dr. Mary Rui Yu accept Medicare?
Yes. CMS data shows Dr. Yu billed Medicare for 127 services in 2024, and Dr. Yu accepts Medicare assignment.
How many Medicare patients does Dr. Mary Rui Yu see?
CMS counts 139 Medicare patients who saw Dr. Yu in 2024, with an average age of 74.
What services does Dr. Mary Rui Yu bill to Medicare?
In 2024, Dr. Yu's most billed Medicare services were emergency department visit (99285) and emergency department visit (99284).
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What drugs does Dr. Mary Rui Yu prescribe most?
In 2024 Medicare Part D data, Dr. Yu's most prescribed drugs by claims were Cephalexin.
Has Dr. Mary Rui Yu received payments from drug or device companies?
CMS Open Payments shows $34 in general payments to Dr. Yu from 2 companies from 2021 to 2023. The largest total came from BioXcel Therapeutics, Inc.
How long has Dr. Mary Rui Yu been practicing?
Dr. Yu graduated from medical school in 2014, 12 years ago.
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