Dr. Hsiao Ou Hu, MD
- Medicare services, 2024
- 1,757
- Medicare patients, 2024
- 534
- Part D claims, 2024
- 2,346
- Hospital affiliations
- 5
- Industry payments
- $3,453
- Practice address
- 615 New Ballas Road, Saint Louis, MO 63141
- Practice phone
- Call (314) 251-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Hu's professional email, personal email and mobile number
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Dr. Hsiao Ou Hu is a hematologist and oncologist in Saint Louis, Missouri
Dr. Hu practices at Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy.
Dr. Hu's NPI, 1811962657, was assigned on February 22, 2006. Dr. Hu holds Missouri license 2002003283.
- NPI
- 1811962657NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8921014648
- NPI enumeration date
- February 22, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 251-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Hsiao Ou Hu practices at Mercy Hospital St. Louis in Saint Louis, Missouri
Dr. Hu's primary practice is Mercy Hospital St. Louis, at 615 New Ballas Road, Saint Louis, MO 63141 in St. Louis County. The practice phone is (314) 251-6000.
- Mercy Hospital St. Louis615 New Ballas Road, Saint Louis, MO 63141 · St. Louis CountyPhone(314) 251-6000
Source: Dmand AI Affiliation Data
Dr. Hsiao Ou Hu is affiliated with 7 sites of care and 2 medical groups
Dr. Hu's primary practice is Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy. Dr. Hu is also affiliated with Mercy Hospital South. The medical group on file is Mercy Clinic Oncology. Dmand AI also links Dr. Hu to 3 more hospitals, 2 group practices and clinics and 1 medical group, 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. Hsiao Ou Hu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hu practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Hospital St. Louis | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Mercy and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Hsiao Ou Hu is one of 187 hematologists and oncologists in Missouri
Hematology and oncology is Dr. Hu's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Hu is licensed in Missouri.
Specialties and state licenses
- Hematology and oncology, MissouriPrimary
Hematologists and oncologists near Dr. Hu
Counts of hematologists and oncologists 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. Hsiao Ou Hu billed Medicare for 1,757 services in 2024
CMS data shows 1,757 Medicare services from Dr. Hu across 7 procedure codes in 2024, for 534 Medicare patients. Medicare paid $111,197 for them.
Dr. Hu's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2,1012024: 1,75716%
Where Dr. Hu's Medicare services took place, 2024
- In an office47727%
- In a facility1,28073%
Dr. Hu compared with the Missouri median for hematologists and oncologists, 2024
- Dr. Hu
- Missouri median
- Medicare services
- 1,757vs 7302.4 times
- Medicare patients
- 534vs 27296% above
- Part D claims
- 2,120vs 5513.8 times
Medians across 185 hematologists and oncologists in Missouri with Dmand AI profiles that report each measure.
Dr. Hu'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hu and other hematologists and oncologists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Hsiao Ou Hu treated 534 Medicare patients in 2024, average age 75
CMS counts 534 Medicare patients who saw Dr. Hu in 2024. The largest group is 65 to 74, with 226 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 8% are also on Medicaid. Their average risk score is 2.04, 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. Hu's median patient age at 71, with 55% women.
Dr. Hu's Medicare patients by age, 2024
Dr. Hu's Medicare patients by sex, 2024
- Women27852%
- Men25648%
Chronic conditions among Dr. Hu's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis51%
- Cancer49%
- Chronic kidney disease39%
- Ischemic heart disease33%
- Anxiety27%
- Diabetes26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Hsiao Ou Hu wrote 2,346 Medicare Part D claims in 2024
In 2024, Dr. Hu wrote 2,346 Medicare Part D claims for 427 patients. 70% of them were for generic drugs. CMS names the drug for 2,120 of them, across 63 drugs with 11 or more claims each, at $7,410,705 in total drug cost. In 2023, CMS named 1,903 claims across 57 drugs.
Dr. Hu's Part D claims by kind of drug, 2024
- Generic1,639 claims70%
- Brand-name and other707 claims30%
Dr. Hu'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. Hu's Part D claims, 2024
- Opioids9%213 of 2,346 claims
- Antibiotics3%72 of 2,346 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: 1,9032024: 2,12011%
Drugs named by CMS: 63 in 2024, 57 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. Hsiao Ou Hu takes part in Medicare
Dr. Hu 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. Hsiao Ou Hu received $3,453 in industry payments from 2016 to 2025
CMS Open Payments shows 205 general payments to Dr. Hu from 37 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. Pfizer Inc. paid the most, $441.
General payments to Dr. Hu by program year, 2016 to 2025
General payments to Dr. Hu by kind, 2016 to 2025
- Food and beverage$3,38798%
- Education$662%
Companies that paid Dr. Hu the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Hsiao Ou Hu'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. Hsiao Ou Hu
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. Hsiao Ou Hu's NPI number?
Dr. Hsiao Ou Hu's NPI number is 1811962657. It was assigned on February 22, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Hsiao Ou Hu?
Dr. Hsiao Ou Hu is a hematologist and oncologist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Hsiao Ou Hu practice?
Dr. Hu practices at 615 New Ballas Road, Saint Louis, MO 63141. Dr. Hu's primary practice is Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy. Dmand AI also links Dr. Hu to 3 hospitals, 2 group practices and clinics and 1 medical group.
What is Dr. Hsiao Ou Hu's office phone number?
The practice phone on file for Dr. Hu is (314) 251-6000.
What is Dr. Hsiao Ou Hu's medical license number?
Dr. Hu holds Missouri license 2002003283.
Which hospitals is Dr. Hsiao Ou Hu affiliated with?
Dr. Hu practices at Mercy Hospital St. Louis in Saint Louis, Missouri. Dr. Hu is also affiliated with Mercy Hospital South. Dmand AI links Dr. Hu to 3 more hospitals.
What medical group is Dr. Hsiao Ou Hu part of?
Dr. Hu is linked to Mercy Clinic Oncology. Dmand AI links Dr. Hu to 1 more medical group.
Does Dr. Hsiao Ou Hu accept Medicare?
Yes. CMS data shows Dr. Hu billed Medicare for 1,757 services in 2024, and Dr. Hu accepts Medicare assignment.
How many Medicare patients does Dr. Hsiao Ou Hu see?
CMS counts 534 Medicare patients who saw Dr. Hu in 2024, with an average age of 75.
What services does Dr. Hsiao Ou Hu bill to Medicare?
In 2024, Dr. Hu's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and hospital inpatient care (99232).
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What drugs does Dr. Hsiao Ou Hu prescribe most?
In 2024 Medicare Part D data, Dr. Hu's most prescribed drugs by claims were Anastrozole, Eliquis and Xtandi.
Has Dr. Hsiao Ou Hu received payments from drug or device companies?
CMS Open Payments shows $3,453 in general payments to Dr. Hu from 37 companies from 2016 to 2025. The largest total came from Pfizer Inc.
How long has Dr. Hsiao Ou Hu been practicing?
Dr. Hu graduated from medical school in 1991, 35 years ago.
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