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Dr. Diana Yi Zhao, MD
NPI1144740820PAC ID5193097996
- Medicare services, 2024
- 216
- Medicare patients, 2024
- 138
- Part D claims, 2020
- 529
- Publications
- 2
- MIPS score, 2024
- 84
- Practice address
- One Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110
- Practice phone
- Call (314) 747-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Diana Yi Zhao is a hospitalist in Saint Louis, Missouri
Dr. Zhao practices at Barnes-Jewish Hospital in Saint Louis, Missouri, part of BJC Health.
Dr. Zhao's NPI, 1144740820, was assigned on June 22, 2017. Dr. Zhao graduated from Washington University School of Medicine in 2017. Dr. Zhao holds Missouri license 2019000908.
NPI and contact details
- NPI
- 1144740820NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5193097996
- NPI enumeration date
- June 22, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 747-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Diana Yi Zhao practices at 2 locations in Saint Louis, Missouri
Dr. Zhao's primary practice is Barnes-Jewish Hospital, at One Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110 in St. Louis City. The practice phone is (314) 747-3000. Dr. Zhao also practices at Barnes-Jewish Hospital, 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110.
- Barnes-Jewish HospitalPrimaryOne Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110 · St. Louis CityPhone(314) 747-3000
- Barnes-Jewish Hospital1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110 · Saint Louis CityPhone(314) 747-3000
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Diana Yi Zhao is affiliated with 2 sites of care and 1 medical group
Dr. Zhao's primary practice is Barnes-Jewish Hospital in Saint Louis, Missouri, part of BJC Health. Dr. Zhao is also affiliated with Barnes-Jewish West County Hospital. The medical group on file is WashU Medicine Psychiatry.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Diana Yi Zhao's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zhao practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Barnes-Jewish Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Diana Yi Zhao is one of 735 hospitalists in Missouri
Hospitalist is Dr. Zhao's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Zhao is board certified in internal medicine by the American Board of Internal Medicine. Dr. Zhao is licensed in Missouri.
Specialties and state licenses
- Hospitalist, MissouriPrimary
Hospitalists near Dr. Zhao
Counts of hospitalists 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. Diana Yi Zhao billed Medicare for 216 services in 2024
CMS data shows 216 Medicare services from Dr. Zhao across 4 procedure codes in 2024, for 138 Medicare patients. Medicare paid $18,420 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024216
Medicare patients138
Paid by Medicare$18,420
Procedure codes4
Dr. Zhao's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1402024: 1344%
- Other services
- 2023: 182024: 82356%
Dr. Zhao compared with the Missouri median for hospitalists, 2024
- Dr. Zhao
- Missouri median
- Medicare services
- 216vs 43450% below
- Medicare patients
- 138vs 19128% below
- Part D claims
- 529vs 985.4 times
Medians across 659 hospitalists in Missouri with Dmand AI profiles that report each measure.
Dr. Zhao'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. Diana Yi Zhao treated 138 Medicare patients in 2024, average age 68
CMS counts 138 Medicare patients who saw Dr. Zhao in 2024. The largest group is 65 to 74, with 56 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 33% are also on Medicaid. Their average risk score is 3.44, 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. Zhao's median patient age at 64, with 45% women.
Medicare patients, 2024138
Average age68
Average risk score3.44
Also on Medicaid33%
Dr. Zhao's Medicare patients by age, 2024
Dr. Zhao's Medicare patients by sex, 2024
- Women7454%
- Men6446%
Chronic conditions among Dr. Zhao's Medicare patients, 2024
- High blood pressure75%
- High cholesterol74%
- Arthritis55%
- Chronic kidney disease53%
- Ischemic heart disease49%
- Mood disorders45%
- Anxiety43%
- Depression43%
Share of Medicare patients with each condition. A patient can have several.
Dr. Zhao'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
- Women45%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Diana Yi Zhao wrote 529 Medicare Part D claims in 2020
In 2020, Dr. Zhao wrote 529 Medicare Part D claims. They cover 25 drugs, with $33,445 in total drug cost. In 2019, CMS named 592 claims across 27 drugs.
Part D claims, 2020529
Drugs named by CMS25
Total drug cost$33,445
Dr. Zhao's most prescribed drugs by claims, 2020
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 5922020: 52911%
Drugs named by CMS: 25 in 2020, 27 in 2019.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Dr. Diana Yi Zhao scored 84 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Zhao for performance year 2024, reported as part of a group. Dr. Zhao accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Zhao's MIPS scores, performance year 2024
- 84of 100Final score
- 71.6of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 76of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Diana Yi Zhao has 2 publications on record
Dmand AI links 2 papers to Dr. Zhao in 2015. Dr. Zhao's most frequent co-author is Dennis E. Hallahan, MD.
Papers2
Dr. Zhao's most frequent co-authors
Recent publications by Dr. Zhao
J Gastrointest Oncol
See who Dr. Zhao researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Zhao works with, so you can find a warm path to the right hospitalists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Diana Yi Zhao graduated from Washington University School of Medicine
Dr. Zhao graduated from Washington University School of Medicine in 2017.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Sources for Dr. Diana Yi Zhao'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Diana Yi Zhao
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. Diana Yi Zhao's NPI number?
Dr. Diana Yi Zhao's NPI number is 1144740820. It was assigned on June 22, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Diana Yi Zhao?
Dr. Diana Yi Zhao is a hospitalist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Diana Yi Zhao practice?
Dr. Zhao practices at One Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110. Dr. Zhao also practices at 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110. Dr. Zhao's primary practice is Barnes-Jewish Hospital in Saint Louis, Missouri, part of BJC Health.
What is Dr. Diana Yi Zhao's office phone number?
The practice phone on file for Dr. Zhao is (314) 747-3000.
What is Dr. Diana Yi Zhao's medical license number?
Dr. Zhao holds Missouri license 2019000908.
Which hospitals is Dr. Diana Yi Zhao affiliated with?
Dr. Zhao practices at Barnes-Jewish Hospital in Saint Louis, Missouri. Dr. Zhao is also affiliated with Barnes-Jewish West County Hospital.
What medical group is Dr. Diana Yi Zhao part of?
Dr. Zhao is linked to WashU Medicine Psychiatry.
Does Dr. Diana Yi Zhao accept Medicare?
Yes. CMS data shows Dr. Zhao billed Medicare for 216 services in 2024, and Dr. Zhao accepts Medicare assignment.
What is Dr. Diana Yi Zhao's MIPS score?
Dr. Zhao's MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.
How many Medicare patients does Dr. Diana Yi Zhao see?
CMS counts 138 Medicare patients who saw Dr. Zhao in 2024, with an average age of 68.
Show 7 more questionsShow fewer questions
Is Dr. Diana Yi Zhao board certified?
Yes. Dr. Zhao is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Diana Yi Zhao bill to Medicare?
In 2024, Dr. Zhao's most billed Medicare services were hospital inpatient care (99223), medicare service (G0316) and hospital inpatient care (99222).
Where did Dr. Diana Yi Zhao go to medical school?
Dr. Zhao graduated from Washington University School of Medicine in 2017.
What drugs does Dr. Diana Yi Zhao prescribe most?
In 2020 Medicare Part D data, Dr. Zhao's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Hydrochlorothiazide.
How long has Dr. Diana Yi Zhao been practicing?
Dr. Zhao graduated from medical school in 2017, 9 years ago.
Does Dr. Diana Yi Zhao do research?
Dmand AI links 2 publications to Dr. Zhao.
Who does Dr. Diana Yi Zhao publish with?
Dr. Zhao's most frequent co-authors are Dennis E. Hallahan, MD (1 shared paper).
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