Dr. David W. Chien, MD
- Medicare services, 2024
- 129
- Medicare patients, 2024
- 200
- Part D claims, 2024
- 57
- Hospital affiliations
- 1
- Industry payments
- $81
- Practice address
- 10010 Kennerly Road, Saint Louis, MO 63128
- Practice phone
- Call (314) 525-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chien's professional email, personal email and mobile number
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Dr. David W. Chien is an anesthesiologist in Saint Louis, Missouri
Dr. Chien practices at Mercy Hospital South in Saint Louis, Missouri, part of Mercy.
Dr. Chien's NPI, 1073592648, was assigned on January 12, 2006. Dr. Chien graduated from University of Missouri, Columbia School of Medicine in 1991. Dr. Chien holds Missouri license 108987.
- NPI
- 1073592648NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1557450970
- NPI enumeration date
- January 12, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 525-1000
- 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. David W. Chien practices at Mercy Hospital South in Saint Louis, Missouri
Dr. Chien's primary practice is Mercy Hospital South, at 10010 Kennerly Road, Saint Louis, MO 63128 in St. Louis County. The practice phone is (314) 525-1000.
- Mercy Hospital South10010 Kennerly Road, Saint Louis, MO 63128 · St. Louis CountyPhone(314) 525-1000
Source: Dmand AI Affiliation Data
Dr. David W. Chien is affiliated with 1 site of care and 1 medical group
Dr. Chien's primary practice is Mercy Hospital South in Saint Louis, Missouri, part of Mercy. The medical group on file is South County Anesthesia Associates.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. David W. Chien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chien practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Hospital South | 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. David W. Chien is one of 819 anesthesiologists in Missouri
Anesthesiology is Dr. Chien's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Chien is board certified in anesthesiology by the American Board of Anesthesiology. Dr. Chien is licensed in Missouri.
Specialties and state licenses
- Anesthesiology, MissouriPrimary
Anesthesiologists near Dr. Chien
Counts of anesthesiologists 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. David W. Chien billed Medicare for 129 services in 2024
CMS data shows 129 Medicare services from Dr. Chien across 7 procedure codes in 2024, for 200 Medicare patients. Medicare paid $7,364 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chien's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 892024: 6131%
- Surgery
- 2023: 302024: 5377%
- Imaging
- 2023: 132024: 1515%
Dr. Chien compared with the Missouri median for anesthesiologists, 2024
- Dr. Chien
- Missouri median
- Medicare services
- 129vs 7572% above
- Medicare patients
- 200vs 14043% above
- Part D claims
- 28vs 2227% above
Medians across 839 anesthesiologists in Missouri with Dmand AI profiles that report each measure.
Dr. Chien'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.
Need commercial claims for Dr. Chien?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chien and other anesthesiologists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David W. Chien treated 200 Medicare patients in 2024, average age 73
CMS counts 200 Medicare patients who saw Dr. Chien in 2024. The largest group is 65 to 74, with 110 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 10% are also on Medicaid. Their average risk score is 1.38, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chien's median patient age at 63, with 53% women.
Dr. Chien's Medicare patients by age, 2024
Dr. Chien's Medicare patients by sex, 2024
- Women10352%
- Men9749%
Chronic conditions among Dr. Chien's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis65%
- Mood disorders36%
- Depression33%
- Anxiety32%
- Diabetes32%
- Ischemic heart disease32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chien's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women53%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David W. Chien wrote 57 Medicare Part D claims in 2024
In 2024, Dr. Chien wrote 57 Medicare Part D claims. 100% of them were for generic drugs. CMS names the drug for 28 of them, across 1 drug with 11 or more claims each, at $991 in total drug cost. In 2021, CMS named 59 claims across 2 drugs.
Dr. Chien's most prescribed drugs by claims, 2022
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. Chien's Part D claims, 2024
- Opioids47%27 of 57 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, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 592022: 2853%
Drugs named by CMS: 1 in 2022, 2 in 2021.
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. David W. Chien takes part in Medicare
Dr. Chien 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. David W. Chien received $81 in industry payments from 2016 to 2023
CMS Open Payments shows 5 general payments to Dr. Chien from 5 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Masimo Corporation paid the most, $21.
General payments to Dr. Chien by program year, 2016 to 2023
Companies that paid Dr. Chien the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. David W. Chien graduated from University of Missouri, Columbia School of Medicine
Dr. Chien graduated from University of Missouri, Columbia School of Medicine in 1991.
- Medical school
- Board certified in anesthesiology
Source: Dmand AI Professional Profile Data
Sources for Dr. David W. Chien'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) |
| 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. David W. Chien
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. David W. Chien's NPI number?
Dr. David W. Chien's NPI number is 1073592648. It was assigned on January 12, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. David W. Chien?
Dr. David W. Chien is an anesthesiologist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. David W. Chien practice?
Dr. Chien practices at 10010 Kennerly Road, Saint Louis, MO 63128. Dr. Chien's primary practice is Mercy Hospital South in Saint Louis, Missouri, part of Mercy.
What is Dr. David W. Chien's office phone number?
The practice phone on file for Dr. Chien is (314) 525-1000.
What is Dr. David W. Chien's medical license number?
Dr. Chien holds Missouri license 108987.
Which hospitals is Dr. David W. Chien affiliated with?
Dr. Chien practices at Mercy Hospital South in Saint Louis, Missouri.
What medical group is Dr. David W. Chien part of?
Dr. Chien is linked to South County Anesthesia Associates.
Does Dr. David W. Chien accept Medicare?
Yes. CMS data shows Dr. Chien billed Medicare for 129 services in 2024, and Dr. Chien accepts Medicare assignment.
How many Medicare patients does Dr. David W. Chien see?
CMS counts 200 Medicare patients who saw Dr. Chien in 2024, with an average age of 73.
Is Dr. David W. Chien board certified?
Yes. Dr. Chien is board certified in anesthesiology by the American Board of Anesthesiology.
Show 5 more questionsShow fewer questions
What services does Dr. David W. Chien bill to Medicare?
In 2024, Dr. Chien's most billed Medicare services were anesthesia (01402), surgery: brain, spine and nerves (64447) and anesthesia (00731).
Where did Dr. David W. Chien go to medical school?
Dr. Chien graduated from University of Missouri, Columbia School of Medicine in 1991.
What drugs does Dr. David W. Chien prescribe most?
In 2022 Medicare Part D data, Dr. Chien's most prescribed drugs by claims were Hydrocodone-Acetaminophen.
Has Dr. David W. Chien received payments from drug or device companies?
CMS Open Payments shows $81 in general payments to Dr. Chien from 5 companies from 2016 to 2023. The largest total came from Masimo Corporation.
How long has Dr. David W. Chien been practicing?
Dr. Chien graduated from medical school in 1991, 35 years ago.
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